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Full text of "Briggs_Stratton_5S_"

^ 

OPERATING AND 

MAINTENANCE MANUAL 

WITH PARTS CATALOG 

Pries 10c Each 



For Briggs & Stratton Engine 
MODEL 

"5S" 



Briggs&Stratton 



MANUFACTURED BY 

BRIGGS & STRATTON CORPORATION 

MILWAUKEE 1, WISCONSIN, U.S.A. 




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CONTINTS 

Pa«r» 

Introduction 3 

Caution 2 

General Informntion t 

Operator'* Section 

a. Preparation for Use 4 

b. How to Start 4 

c. Lubrication S 

d. Storage Instructions It 

Maintenance Section 

a. Engine Trouble Chart « 

b. Servicing Reference Chart T 

c. Disassembling the Engine 8 

d. The Fuel System 9 

e. The Governor 10 

f. The Isrnltlon System in 

g. Valves 13 

h. Cylinder 14 

1. Crankshaft 14 

j. Cam Shaft and Cam Gear 14 

k. Piston Assembly and Connecting Rod 18 

1. Crankcase Breather Valve IB 

Parts Section 

a. How to Find Correct Part Number. . IT 

b. Illustrations of Parts 18-20 

c. Parts List S1-2S 

d. Where to Order Parts 2» 

e. Warranty 21> 



INTRODUCTION 

This book has been especially prepared to cover the Engine Models 
listed on the cover and Is published for the Information and guidance 
of all concerned. 

THERE IS A RIGHT WAT TO OPERATE THIS ENGINE. THIS 
BOOK TELLS TOU HOW. 

Guessing how to run It may cause failure to receive the maximum In 
performance and dependable service originally built Into this engine. Each 
engine has been carefully tested and adjusted at the factory before pack- 
ing for shipment, and If correctly operated will perform efficiently and 
economically. 

This book Is divided Into four sections, namely: 

1. GENERAL, contains information that you should know regard- 
ing the principal specifications and design of the engine. 

2. OPERATOR'S SECTION, contains Instructions necessary for 
starting and operating the engine. 

X. MAINTENANCE SECTION, consists of instructions pertaining 
to actual repairs such as are conducted in the repair shop. 

4. PARTS SECTION, Includes exploded views of the various engine 
assemblies and component parts and parts list. 



CAUTION I 

1. Exhaust gases contain carbon monoxide which Is odorless and a deadly 
poison. Proper care must be taken to provide efficient ventilation, 

2. Fill crankcase and nlr cleaner with proper oil before starting engine. 
See that oil level Is maintained. 

3. Do not fill the gasoline tank while the engine Is running. Avoid spilling 
gasoline on a hot engine — this may cause an explosion and serious Injury. 

4. Your Brlggs & Stratton engine Is air cooled. The fan action of the vaned 
flywheel forces cooling nlr between the flns of the cylinder and cylinder 
head which keeps the engine at Its proper operating temperature. 

Lack of air due to clogging of blower screen, flywheel vanes, or cylinder 
and cylinder head flns causes overhenting which may result in serious 
damage such as warped or cracked cylinder head, Ignition failure, burnt 
valves, sticking rings, scored piston, bearing failures, etc. 

When the air entering the cooling system carries a considerable amount 
of foreign matter such as grass or heavy dirt, the cooling system can be- 
come restricted or clogged In a very short time and regular cleaning Is 
required. 

It Is recommended that frequent Inspection be made during use to 
determine how often cleaning Is necessnry. If this Is done, the air cleaner 
serviced properly, and the engine operated on a good grade of gasoline 
and oil, you may expect trouble-free performance Indefinitely. The life of 
your engine Is In direct ratio to the care It receives. 



GENERAL INFORMATION 



This engine is a single cylinder, L-Head air-cooled type; bore 2" and 
stroke 1%"- It is rated at: 

.85 H.P. at 2200 R.P.M. 

1.0 H.P. at 2700 R.P.M. 

1.1 H.P. at 3200 R.P.M. 

(The horsepower ratings listed above are established by standard 
I.C.B.I. procedures. For practical operation, the horsepower loading should 
not exceed 85 per cent of these ratings. Engine power will decrease 3 per 
cent for each 1,000 feet above sea level, and 1 per cent for each 10 degrees 
above 60 degrees P.) 

It is of the same basic 4-cycle design used in automobiles, aircraft, 
trucks, and tractors. As the name indicates, there are four strokes to one 
complete power cycle: 

the: 4-stroke cycles 

Plate No. 1 




INTAKE STROKE 



COMPRESSION STROKE POWER STROKE 



EXHAUST STROKE 



a. INTAKE STROKE: The piston goes down, creating a vacuum 
in the cylinder which draws gas through open intake valve 
into the space above the piston. 

b. COMPRESSION STROKE: The piston comes up with both 
valves closed, highly compressing the gas into the space left 
between the top of the piston and cylinder head. 

e. POWER STROKE: At this point the magneto sends high 
tension current to the spark plug, firing or exploding the com- 
pressed gas and driving the piston down. 

d. EXHAUST STROKE: Exhaust valve opens and the upward 
stroke of the piston forces out all of the burnt gases, thus 
completing the power cycle. 

Ignition is supplied by a high tension magneto built into the flywheel. 
The spark plug is 14mm. 

Lubrication is supplied by a splash system which furnishes positive 
lubrication to all moving parts. Oil reservoir capacity is 1 pint. 

The fuel tank holds one quart. The carburetor is suction type. 

The governor is adjustable pneumatic type. 

Two valves are employed: one Intake and one Exhaust. 

The piston and connecting rod are made of aluminum alloy. Crankshaft 
is a drop forging, counterweighted to reduce vibration. 

This engine has been substantially built. It is made of high grade 
materials by skilled workmen, in a factory fully equipped with the most 
modern machinery. Before it was shipped, it received many tests and 
careful inspections. 



OPERATORS SECTION 



OPERATOR'S SECTION 
STARTING AND OPERATING INSTRUCTIONS 



1. PREPARATION FOR USE. 

a. Before starting the engine, fill the crank- 
case with Mobiloil or other high grade 
oil not heavier than S. A. E. No. 20 for 
operating the engine in temperatures of 
32* F. or above. For temperatures below 
32° F. use Mobiloil S. A. E. No. 10W or other 
high grade oil. 

The oil filler cap is located at the end of 
engine base. To open, tilt cap In direction 
of arrow on cap so "catch" Is vertical, as 
shown in inset In plate below. In this posi- 
tion cap will stay open. With the engine 
standing level pour oil in opening until it 
rises to the top of filler cap opening. The 
crankcase holds one pint. To close, roll cap 
with thumb and it will snap into place. 
When closed be sure cap is flat as shown In 
plate below. 



b. Fill air cleaner with same oil as used 
In the crankcase and fill to the Indicated 
oil level. Clean out and refill every 26 
hours. Change oil hourly under dusty oper- 
ating conditions. 

e. Fill the fuel tank with a good grade of 

regular, clean, fresh gasoline such as Mobil- 
gas. DO NOT MIX OIL, WITH GASOLINE. 

2. HOW TO START ROPE STARTER. 

a. Completely close carburetor choke by 
pushing choke lever In (see Plate No. 2). 

b. Wind the starter rope around the starter 
pulley with the knot in the pulley notch. 
Pull the rope with a quick steady pull to 
spin the magneto flywheel with choke fully 
closed to prime the engine. Then open 
choke about one-eighth and repeat opera- 
tion. 



Plate N». I 



SPARK PLUG 



STOP SWITCH 




OIL DRAIN- 
PLUG 



2728-89 



OPERATOR'S SECTION 



e. After the engine warms up, gradually 
open choke lever by pulling; out until en- 
gine runs smoothly with the choke wide 
open. (A warm engine does not require as 
much choking as a cold one.) 

RETRIEVABLE STARTER. Pull fast on 
rope and return slowly. Keep firm grip on 
starter ball until fully returned. Operate 
choke as in paragraph a and c. 

8. FAILURE OP THE ENGINE TO START. 

Cold weather causes the oil in the crank- 
case to become thick and the gasoline less 
volatile. Should you experience trouble in 
starting after spinning the engine several 
times with the choke closed, be sure to 
check the spark plug — see that it is clean 
and the gap set to .026". If the engine 
fails to start after a reasonable number of 
trials, do not make any adjustments until 
you have studied the Engine Trouble Chart 
on following page. 

4. HOW TO STOP. 

a. Press the stop switch meunted on the 
cylinder head against the end of the spark 
plug. Hold until engine stops firing. 

5. USE CLEAN GASOLINE. A good grade 
of regular gasoline Is recommended. Be 
sure the vent hole In the top of the fuel 
tank cap is open, for air must enter the 
tank to allow the gasoline to flow to the 
carburetor. 



«. DO NOT MIX OIL WITH GASOLINE!. 

This engine is provided with an efficient 
splash system which throws oil to all mov- 
ing Internal engine parts. 

7. USE THE RIGHT KIND OF OIL. (See 
Paragraph 1.) 

8. ADD OIL REGULARLY. 
CRANKCASE: After each 5 HOURS of oper- 
ation, fill to the top level of the oil filler cap. 

9. CHANGE OIL FREQUENTLY. After 
each twenty-live houra of engine operation 
the oil should be completely drained from 
the crankcase. Do not remove engine from 
its mounting base. Remove the oil drain 
plug, located at end of engine base (see 
Plate No. 2), and let the oil flow into a 
pan or other receptacle. Do not flimli oat 
with keraaene. Replace the drain plug, re- 
fill with fresh oil, and close the filler cap. 

10. KEEP THE ENGINE CLEAN. It will 
pay you to keep the engine clean both in- 
side and outside. See that no dirt or water 
enters engine when filling with oil or gas- 
oline. As a precautionary measure always 
wipe off the fuel cap and oil filler plug, as 
well as around them before refilling. Dirt 
In the engine or fuel tank will cause trou- 
ble and even serious damage. Also be sure 
to remove any dirt or grass that may ac- 
cumulate in the flywheel housing or be- 
tween cylinder flns. 



STORAGE INSTRUCTIONS 

Engines stored any length of time should be completely drained of 
fuel to prevent gum deposits forming on essential parts such as the 
carburetor and tank. 

Such deposits may affect the operation of the engine when again 
used. Therefore, it is Important that the following instructions be ad- 
hered to before storing the engine: 

a. Remove tank and carburetor from unit and drain completely. 

b. Replace tank and carburetor. 

c. Remove spark plug, pour one ounce of S.A.E. No. 20 oil into 
cylinder and crank slowly to spread oil. Replace spark plug. 



MAINTENANCE SECTION 



MAINTENANCE SECTION 
ENGINE TROUBLE CHART 



ENGINE DIFFICULT TO START 

1. No fuel in tank. 

2. Fuel flow obstructed. 

3. Loose or defective wiring. 

4. Spark plug cracked. 

5. Spark plug fouled. 
8. Improper choking. 

7. Improper fuel mixture. 

8. Throttle valve stuck or out of 
adjustment. 

9. Throttle rod loose. 
19. Valve seats bad. 

11. Valves sticking. 

12. Timing improper. 

13. Defective magneto. 

a. Breaker points worn or pitted. 

b. Breaker points out of adjustment. 
c High tension wire shorted. 

engine: missing 

1. Spark plug fouled. 

2. Spark plug cracked. 

3. Spark plug gap wrong. 

4. Defective wiring. 

5. Ignition breaker points sticking. 

0. Valve warped, broken, or sticking. 

engine: losing power 

1. Carburetor choke valve partly closed. 

2. Improper fuel mixture. 
S. Piston rings sticking. 

4. Improper timing. 

5. Muffler clogged. 
<L Overload. 

7. Cooling air stream obstructed. 



ENGINE KNOCKS 

1. Carbon In cylinder. 

2. Loose main bearings. 

3. Loose rod bearings. 

4. Worn piston and cylinder. 

5. Engine overheated. 

6. Tight pistons. 

7. Loose flywheel. 

8. Lack of oil. 

FAULTY CARBURETION 

1. Carburetor Improperly adjusted. 

2. Sediment or water In fuel tank. 

EXCESSIVE SMOKE FROM EXHAUST 

1. Carburetor needle valve open too far. 

2. Worn piston or piston rings. 

EXPLOSION IN CARBURETOR 

1. Gas mixture too lean. 

2. Intake valve sticking. 

3. Intake tappets sticking. 

4. Intake valve spring weak. 

5. Intake valve warped or broken. 

6. Intake tappets set too close. 

POOR COMPRESSION 

1. Valves not seating. 

2. Valves sticking. 

3. Piston rings worn or weak. 

4. Piston rings broken. 

5. Piston rings sticking. 
8. Loose spark plug. 

7. Cylinder head loose. 

8. Scored cylinder. 

9. Worn piston and cylinder. 



MAINTENANCE SECTION 



SERVICING REFERENCE CHART 



STARTING AKD OPERATING 

INSTRUCTIONS Paragraph 

Preparation for Use 1 

How to Start 2 

Failure of Engine to Start 3 

How to Stop * 

Use Clean Gasoline * 

Do Not Mix Oil with Gasoline 6 

Use the Right Kind of Oil 7 

Add Oil Regularly 

Crankcase * 

Change Oil Frequently 9 

Keep the Engine Clean 10 

Disassembling the Engine 11 

FOUL SYSTEM 

Avoid Gummy Gasoline 12 

How to Avoid Gum Formation 13 

To Clean Fuel Tank Cap 14 

Correct Use of Choke IB 

To Prime the Engine 16 

To Adjust the Carburetor 17 

To Remove Carburetor 18 

To Replace Carburetor 19 

GOVERNOR 

Correct Engine Speed 20 

Governor Speed Adjustment 21 

To Check Governor Blade Clearance .... 22 



Paragraph 
VALVES 

Valve Adjustments •• 

To Remove " 

Valve Seating s * 

Valve Timing ** 



CYLINDER 

The Cylinder Head 40 

To Remove and Clean Cylinder Head.... 41 

To Replace Cylln'der Head 4 J 



CRANKSHAFT 

To Remove 

To Check End Play * 4 



<s 



Oil Seal 



CAM SHAFT AND CAM GEAR 

To Remove 

To Replace 



4f 



46 
47 



PISTON ASSEMBLY AND 
CONNECTING ROD 



48 



Piston 

Piston Rings 49 



Piston Pin 



60 



Connecting Rod B1 



IGNITION SYSTEM 

To Check for Spark 24 

Spark Plug Adjustment 26 

Ignition Cable 26 

To Remove Flywheel 27 

To Reassemble the Flywheel 28 

To Remove Magneto Assembly 29 

To Replace Magneto Assembly 20 

Magneto Timing 11 

To Adjust and Clean Contact Point 82 

To Replace Condenser 82 

To Replace and Adjust Armature 34 

Bearing Oil (teal 8S 



CRANKCASE BREATHER VALVE 

The Breather Valve 62 

To Remove and Clean Bs 

AIR CLEANER 

To Remove. Clean and Replace 64 



OVERLOAD 

To Prevent 



16 



REPAIR PAJMP* INFORMATION 

How to Fi»* Parts You Need M 



MAINTENANCE SECTION 



IMPORTANT NOTICE 



Unless you have a thorough knowledge of Internal combustion engines and 
proper tools, we do not recommend that you attempt to make major engine re- 
pairs. This does not mean that you shouldn't make necessary adjustments and 
simple repairs, but in case of emergency we advise you to get in touch with our 
nearest service organization. See page 29. 



DISASSEMBLING THE ENGINE 



11. To facilitate the complete disassembly 
for major repairs, we suggest the following 
procedure. First drain the fuel and oil and 
then remove the parts as follows: 

1. Remove air cleaner wing nut and air 
cleaner. 

2. Take off muffler. 

8. Remove 2 screws holding carburetor to 
cylinder to remove carburetor. 

4. Remove link from governor blade. 

B. Remove 4 screws holding blower hous- 
ing and remove housing. 

6. Remove spark plug. Use spark plug 
wrench. 

7. Remove cylinder head by removing 6 
screws which hold It to cylinder. 



12. Remove valve cover plate and gasket 
(1 nut), spray shield and breather parts. 

13. Compress valve springs with screw 
driver and remove pins with pliers to 
free valves (2). 

14. Remove cylinder from base by remov- 
ing 2 cap screws and washers. 

15. Remove 2 cap screws — take off con- 
necting rod cap. 

16. Remove carbon at top of cylinder bore, 
then push out piston and connecting 
rod assembly. 

17. Remove 2 pin locks to remove piston 

pin from piston. 

18. Remove rings from piston. 

8. Remove drive pulley on magneto side 10, Drlve out cam shaft <P°™t take-off 
of engine. side) - 



9. Take off flywheel and key. 



20. Remove crankshaft. 



10. Remove magneto dust cover (2 nuts). 21, Remove cam gear and cam followers. 

Check each item as removed to determine 

11. Remove 4 hexagon cap screws which its condition. On following pages you will 
hold magneto plate and remove the find instructions for proper repair proce- 

magneto assembly. dure. 



MAINTENANCE SECTION 



THE FUEL SYSTEM 



12. AVOID GUMMY GASOLINE. If you 

experience trouble with a gummy, sticky 
substance with a sharp obnoxious odor, 
change to fresh gasoline. This gum comes 
from the gasoline and clogs the carburetor, 
fuel tank, etc. 

15. YOU CAN AVOID MOST TROUBLE 
FROM GUM IF YOU WIL.Ii KEEP THE 
FUEL TANK FULL WHEN NOT USING 
THE ENGINE. If you use It only occa- 
sionally, drain tank completely and refill 
when the engine is used again. The reason 
for this is that evaporation of gasoline 
causes most gum deposits. 

14. TO CLEAN FUEL TANK CAP. Be sure 
that the small vent hole In the fuel tank 
cap is not clogged up, for air must enter 
the tank to allow the gasoline to flow to 
the carburetor. Test by blowing through 
top of cap. 

16. CORRECT USE OF THE CHOKE. The 

correct carburetor setting (see Paragraph 
No. 17) gives the engine the best mixture 
to run on when it is hot. For starting, it 
Is necessary to choke the carburetor to get 
a rich mixture, because cold gasoline does 
not vaporize readily. A warm or hot en- 
gine requires very little choking. Until you 
become familiar with your engine, however, 
you may make the mistake of not choking 
the carburetor enough or you may choke 
It too much. If engine falls to start after 
cranking three or four times with the choke 
closed, try cranking two or three times 
with the choke part way open and then all 
the way open. 

10. TO PRIME THE ENGINE. The engine 
may fall to start for the reason that either 
the carburetor is incorrectly adjusted or 
dirty, or you are out of gasoline. To de- 
termine the cause, prime the engine by re- 
moving the spark plug and pour a half tea- 
spoonful of gasoline into the spark plug 
opening. Replace the spark plug and crank 
the engine. If it fires for three or four 
revolutions and stops, the difficulty Is defi- 
nitely In the fuel system. If engine will not 
fire at all, check the ignition system. 

17. TO ADJUST THE CARBURETOR. The 

carburetor on this engine is of the suction 
type. The gasoline supply Is regulated by 
a needle valve (see Plate 3). The throt- 
tle is automatically controlled by the gov- 
ernor. (See paragraph 20.) 

a. To adjust the carburetor, completely 
close needle valve by turning to right or 
clockwise as far as possible. Do not screw 
up too tight or use force when closing 



needle valve, or the seat, or taper of needle 
valve may be damaged. 

b. From closed position, open needle valve 
about one complete turn. 

c. After the engine has been started and 
warmed up with the choke wide open, make 
final adjustment by turning the needle valve 
to the point at which engine operates most 

Standard Carburetor and Governor Hook-up 
Plate No. 3 




Remote Governor Control and Hand Control 
Plate No. 4 




smoothly with full load. This setting will 
also take care of starting with use of the 
choke. 

d. When starting cold engine, If it Is nec- 
essary to keep choke partially closed sev- 
eral minutes before engine runs smoothly, 
carburetor setting is too lean and needle 
valve should be opened a notch or two — 
turn to left. If carburetor throttle acts 
sluggish or engine does not govern smooth- 



10 



MAINTENANCE SECTION 



ly, it is usually caused by a dirty or gummy 
throttle. For governor adjustments see 
paragraphs 20 and 21. 

18. TO REMOVE CARBURETOR. 

a. Remove air cleaner. 

b. Loosen two carburetor mounting screws. 

c. Unhook link at governor blade. 

19 TO REPLACE CARBURETOR. 

Reverse the operations as performed above. 
CAUTION: Be sure to replace the carbu- 
retor gasket. The throttle link must oper- 
ate freely In the governor arm blade and 
carburetor throttle arm. 



THE GOVERNOR 

20. CORRECT ENGINE SPEED. The speed 
of this engine is automatically maintained 
under varying loads by a built-in governor. 
Recommended operating speed is 2200 to 
1200 R.P.M. As different types of equip- 
ment require various operating speeds for 
the greatest efficiency, it is suggested that 
you follow the recommendations of the 
manufacturer of the complete unit which 
the engine powers. 

21. GOVERNOR SPEED ADJUSTMENT. 

The governor was carefully adjusted at the 
factory to maintain normal speed under 
load. Do not re-adjust unless absolutely 
necessary. A speed adjusting screw Is lo- 
cated on carburetor. (See Plate No. 3.) 

a. To increase engine speed, turn screw 
clockwise. 

b. To decrease engine speed, turn screw 
counter clockwise. 

HAND GOVERNOR CONTROL,. (See Plate 
No. 4.) Move lever forward to increase 
speed. 

REMOTE GOVERNOR CONTROL,. To in- 
crease speed move lever on control lever 
aaaembly as shown in Plate No. 4. 

23. TO CHECK AIR VANE GOVERNOR 
BLADE CLEARANCE. This type of gov- 
ernor has but few parts and seldom do 
they need replacement because of wear. It 
U Important, however, that the vane has 
proper clearance so it can operate freely. 
To check and adjust, proceed as follows: 

a. Remove blower case. 

b. Turn carburetor throttle lever so the 
throttle is in wide open position This will 
enable you to see if the vane clears the 
armature core and screws. (See Plate No. 
i, Fig. A.) 

«. If It does not clear, bend vane bracket 
•r Ala blade. (See Plate No. S, Fig. B.) 



Do not bend bracket too far or It may rub 
on flywheel. 

Governor Air Vane Adjustment 
Plate No. 5 




VANE 


© 




e 






© 




BEHD \\ 
BEREJ 





I CLEA«A»CE 
1 / 






it^U FLVWHEEl 
<ff 11 n ii 



Ft*. A 



Fit. B 



THE IGNITION SYSTEM 

23. THE IGNITION SYSTEM. The spark Is 
produced by a high tension magneto con- 
sisting of armature, condenser, contact 
points, and rotating magnets cast in a fly- 
wheel. The ignition current is sent Into 
the engine cylinder through the ignition 
cable and spark plug. The magneto Itself 
as well as the cable and spark plug must 
all be in proper condition and adjustment 
to insure a good hot spark. 

24. TO CHECK FOR SPARK. 

a. Remove the ignition cable from the plug. 
Remove plug. Hold the ignition cable ter- 
minal about %» from any metal part of 
cylinder head. (See Plate No. 6.) 

b. Turn engine and if spark jumps this gap 
the entire Ignition system with the excep- 
tion of the spark plug Is O. K. 



Cheeking- Spark 
Plate No. e 



Spark l'lu * 
Plate No. T 




2227-* 1 



c. If no spark develops, check the cable 
(see Paragraph 26), and refer to magneto 
adjustments explained in Paragraphs 27 to 
34. 

25. SPARK PLUG ADJUSTMENT. The spark 
plug should be cleaned and the gap reset 
to .026' after each 100 hours of operation. 



MAINTENANCE SECTION 



(See Plate No. 7.) Always keep a fresh plug 
on hand. Use Champion No. J-8 (14mm) 
spark plug or Its exact equivalent. When 
Inserting plug place a little graphite grease 
on the threads. 

26. IGNITION CABIiB. Insulation must not 
be broken or soaked with oil or water, or 
grounded In any way where it touches the 
engine as this will Interfere with good 
ignition. To check the cable all the way 
to the magneto it is necessary to remove 
blower case. Be sure that the cable is 
securely fastened to the secondary terminal 
of the coil. (See Plate No. 11.) 

27. TO REMOVE FLIWHBEU (See Plate 
No. 8.) The flywheel is securely mounted 
to the crankshaft by means of a taper fit, 
a soft key, left hand threaded nut and 
spring washer. To remove proceed as fol- 
lows: 

ROPE STARTER ENGINES. 

a. Remove the blower housing. 

b. Bolt or clamp the engine to a work 
bench. 

c. Place a block of wood under flywheel 
fln to hold It solid as illustrated In Plate 
No. 8. 

d. Use a large wrench, 10" or longer. Turn 
pulley to the RIGHT until loosened. Be 
careful not to break flns as this will throw 
flywheel out of balance. 

e. After the pulley has been removed loosen 
the flywheel by placing a wood block 
against the end of crankshaft and strike 
with a hammer. Pull off flywheel. 

Removing Flywheel Rope Starter Engine 
Plate No. 8 




d. Take off clutch housing and locking 
washer. 

e. Remove flywheel same as rope starter 
explained above. 

28. TO REASSEMBLE FLYWHEEL. 

a. Thoroughly clean flywheel hole and 
tapered end of crankshaft. 

b. Apply a light coat of colloidal graphite 
(Oil-Dag) mixed with lubricating oil to the 
tapered end of the crankshaft DO NOT 
USB TOO MUCH. 

c. Turn crankshaft until keyway is up. 
Then place flywheel on crankshaft and 
align keyways. 

d. Insert key and push up securely Into 
keyways. 

e. Assemble spring washer with the hollow 
or concave side next to the flywheel. 

f. Place a block of wood under the left 
side of flywheel to hold rigid and draw nut 
very tight. 

29. TO REMOVE MAGNETO ASSEMBLY. 

After the flywheel has been removed as 
explained in above paragraph, proceed as 
follows: 

a. Remove magneto point dust cover. It 
Is not necessary to remove the carburetor 
unless you have already done so. 

b. Remove four magneto plate mounting 
screws. 

30. TO REP1ACE MAGNETO ASSEMBLY. 

Use same gaskets between plate and crank- 
case, or if damaged, use one of the follow- 
ing new gaskets for proper end play: 
* Part No. 67597 — .005* 

Part No. 67607— .009* 

Part No. 67307— .015* 
The end play should be .002" to .008* be- 
tween magneto bearing and crankshaft 
thrust faces as shown in Plate No. 9. 
Use lockwashers under mounting screws. 

Correct End Play — Plate No. 9 



TO LOCSEH 



i214^2 



RETRIEVABLE STARTER. 

a. Remove blower housing with starter 
housing attached. 

b. Bend locking tang out of clutch hous- 
ing recess with screw driver. 

a. Remove clutch housing by tapping to 
the left with a punch and hammer. 




31. MAGNETO TIMING. The magneto as- 
sembly is always correctly timed with the 
engine when the flywheel Is assembled to 
the tapered crankshaft with a key and 



12 



MAINTENANCE SECTION 



securely held In place with left hand 
threaded nut. Do not attempt to change 
the timing by relocating any parts or filing 
crankshaft timing flat. Always use soft 
key Part No. 81760. If steel key Is used 
and flywheel becomes loose It will damage 
the keyway In the crankshaft. 

83. TO ADJUST AND CLEAN CONTACT 
POINTS. (See Plate No. 10.) 
a. Remove blower housing, flywheel, and 
magneto point dust cover. 

Adjaatlng Contact Points — Plate No. 10 




». Turn crankshaft by hand to see If con- 
tact points open and close properly. Points 
must be clean and line up squarely to make 
good contact. Do not file points — use fine 
sandpaper or fine grit hone to clean points. 
e. Adjust gap to .020* by loosening the ad- 
Justing lock screw and moving contact point 
bracket up or down. When proper gap Is 

Complete Magneto Asaembly — Plate No. 11 



ARMATURE 
MOUNT I HG 
SCREW 




■ P^-29 



obtained tighten lock screw securely. If 
either or both points become badly pitted 
or burned, replace with complete new Con- 
tact Point Assembly, Part No. 29667. 

33. TO REPLACE CONDENSER. A leaky 
or weak condenser may cause the engine 
to start hard, to sputter and misfire under 
load. If engine misfires after checking the 
fuel line, carburetor, spark plug, and con- 
tact points, install a new condenser. Part 
No. 29861. Both the condenser lead and 
armature lead must be fastened to contact 
bracket. (See Plate No. 11.) Be sure to push 
condenser lead down between condenser and 
hub of magneto plate to avoid rubbing 
against the flywheel. 

If after new condenser has been installed 
the ignition system still does not deliver 
a satisfactory spark, we recommend send- 
ing the complete magneto unit including 
flywheel to our nearest service organization. 

34. TO REPLACE AND ADJUST ARMA- 
TURE. 

a. Remove primary armature lead wire of 
coil from brass arm on contact bracket. 

b. Remove high tension ignition cable from 
secondary terminal in coll. 

c. Unscrew four armature mounting screws. 

d. Install new armature. Part No. 291617, 
and be sure that condenser lead wire and 
armature lead wire are fastened to contact 
bracket. (See Plate No. 11.) 

e. Replace mounting screws, Inserting one 
with terminal of ground wire under screw 
and draw screws tight. 

t. An air gap of .008* to .012* must be 
maintained between armature core ends and 
flywheel. (See Plate No. 12.) Gap must 
only be sufficient to prevent rubbing, but 

Setting Armature Air Gap — Plate No. 12 





3t 


I 


^7j 

^^-^^^s~^Mt m TO .•it"]""' 
^__^^ GAP <LI 


^ 


(uS) 

i I 





MAINTENANCE SECTION 



13 



never over .012", or poor Ignition will re- 
sult. 

To adjust gap to proper clearance, loosen 
the four armature mounting screws, slide 
armature assembly up and place feeler 
gauge between rim of flywheel and arma- 
ture core ends. Lower the armature as- 
sembly until core ends rest on gauge and 
lock Into place by tightening mounting 
screws securely. 

85. BEARING Oil. SEAI*, A bearing oil 
seal Is mounted In the magneto plate. Use 
a screw driver to remove but be careful 
not to damage the bearing surface. This 
seal Is made of a composition and when 
worn should be replaced with a new one, 
Part No. 89660. To replace, place seal In 
the counterbore and force Into position with 
a flat steel block as shown in Plate No. 13. 

Replacing Oil Seal — Plate No. 13 




VALVES 

SO. VALVB ADJUSTMENT. (See Plate No. 
14.) To check valve clearances, remove 

Valve Adjustment — Plate No. 14 




PIN 
CAM LOBE DOM 



valve cover plate, oil spray shield, and 
breather valve. The correct valve clear- 
ances are as follows when the engine Is 
cold? 

Exhaust Valve — .016" 

Tntake Valve — .008" 
Tappet clearance Is adjusted by grinding 
required amount from the end of valve 
stem. End of stem must be square with 
the stem proper. 

37. TO REMOVE VAI/VES. 

a. Drain oil from crankcase of the engine 
If not disassembled. 

b. Remove cylinder head. (See Par. 40-41.) 

c. Compress valve spring with a screw 
driver and pull out valve retainer pins with 
long nosed pliers. Tilt cylinder back far 
enough to permit the valves to drop with 
the stems clearing the spring. Pry the 
spring out with a screw driver. 

38. VAL.VE SEATING. Unless valves are 
properly seated they will cause- Improper 
operation due to lack of compression, waste 
of oil and gasoline. Therefore, reseating 
valves should be done with the utmost 
care. They should not be seated by merely 
lapping with a grinding compound because 
this Is liable to create grooves which wear 
deeper with use and cause further trouble. 
To reseat valves, grind In same manner as 
automobile valves. If valves stick they 
may be coated with gum or carbon. To 
remove gum use alcohol or acetone. Clean 
valve stems thoroughly with wire brush or 
emery cloth. Also scrape all carbon from 
valve parts. 

a. If th§ inspection shows that the valve 
stem Is badly worn or the seat is too badly 
pitted, we recommend sending the engine 
to our nearest service organization. 

SO. VALVE TIMING. The timing of the 
valves Is taken care of by the meshing of 
the cam gear with the gear on the crank- 
shaft. These gears are properly meshed 
when the mark on the cam gear is in line 
with the mark on the crankshaft collar aa 
shown In Plate No. 16. 



Valve Timing — Plate No. IB 




14 



MAINTENANCE SECTION 



CYLINDER 

40. 0YLIJTOKH HRAJJ. The cylinder head 
Is held in place with six cap screws. 

41. TO HKIWOVK AND CLEAN CVLIITDBR 
HEAD, 

a. Remove spark plug. 

b. Remove cylinder head. 

c. Accumulated dirt, grease, and oil should 
be scraped and blown out of the air pas- 
sages. This is Important to allow free cir- 
culation of air and prevent overheating. 

d. Clean carbon deposits with wire brush 
or scraper and thoroughly blow out. See 
that spark plug hole Is clean and that the 
threads are not stripped. 

42. TO REASSEMBLE CYLINDER HEAD. 

a. Use a new gasket, Part No. 251301. If 
not available, clean the old one and coat 
both sides with cup grease — shellac Is net 
recommended. 

b. Replace cylinder head and turn each 
screw by hand as far as it will go. 

Tightening Cylinder Bead — Plate No. 16 




e. Use a socket wrench with a handle not 
over 6" long and tighten all screws evenly 
with a 14 turn in the rotation, 1 to 6, as 
shown in Plate No. 16. Do not tighten one 
screw down completely before the others 
as this may cause the cylinder head to 
warp or damage the gasket. Run engine 
two to five minutes. 

d. Now tighten all screws snugly (which 
will usually be about % turn) In the same 
rotation. 

CRANKSHAFT 

48. TO REMOVE CRANKSHAFT. 

a. Drain oil from crankcase. 

b. If hand or foot starter, remove starter 
assembly. 

«. Remove blower housing. 



d. Remove pulley (turn to right) washer 
and key to remove flywheel as explained 
in Paragraph 27. 

e. Remove magneto plate. (See Paragraph 
29.) 

f. Remove engine from base. 

g. Turn engine upside down. 

b. Disconnect connecting rod and push 
piston down in cylinder bore so It clears 
crankshaft. Do not push too far as top 
ring may become detached. 

1. Remove cam shaft. (See Paragraph 46.) 
J. Slide crankshaft out toward the mag- 
neto side of the engine. 

k. Remove cam gear. 

44. TO CHECK FOR CORRECT END PLAY. 

Use a new gasket when reassembling 
crankshaft and magneto plate. End play 
should not be less than .002" or more than 
.008". (See Paragraph 30.) 

46. OIL SEALS. If the oil seals are worn 
or damaged, replace with new ones. 



CAM SHAFT AND CAM GEAR 

46. TO REMOVE CAM SHAFT AND CAM 
GEAR. 

a. If hand oi foot starter, remove starter 
assembly. 

b. Remove blower housing. 

e. Remove flywheel and magneto plate. 

d. Use a blunt punch and force cam shaft 
out from the drive side of the engine as 
shown in Plate No. 17. 

e. Remove crankshaft. (See Paragraph 4».) 

f. The earn gear will then be free for re- 
moval from crankcase after crankshaft has 
been removed. 

Removing Can Shaft — Plato No. IT 




EXPANSION PLUG 

MAGNETO SI0E OF EHQI 



MAINTENANCE SECTION 



II 



Be sure not to get burrs on the end of the 
■haft. After the shaft has been removed, 
check shaft for wear. If worn more than 
.001", replace with a new shaft. 

47. TO REPLACE. 

a. Insert cam shaft through hole on the 
magneto side of the engine far enough to 
permit sliding the cam gear Into position. 
Be sure to line up timing marks as ex- 
plained In Paragraph 19. 

b. Slide cam shaft through cam gear and 
press In flush with outside of crankcase on 
the opposite side. 

c Install the extension plug In the hole 
on the magneto side with Its open end out. 
Seal with "Permatex" or other liquid gas- 
ket material to prevent oil leaks. 



the cylinder below the piston ring travel. 
Before assembling new rings to piston be 
sure that piston ring grooves are thorough- 
ly cleaned and rings move In grooves freely. 

BO. PISTON PIN. The piston pin Is a slip 
fit In the piston. To remove It from the 
piston, first remove the pin locks, then slip 
pin out of piston. If pin or hole Is worn, 
replace with oversize pin No. 290981. 

51. CONNECTING ROD. The connecting 
rod Is also made of a special aluminum 
alloy which combines strength with light 
weight. The connecting rod Is equipped 
with a dipper. This Is held in place with 
hexagon head cap screws and lock washers. 
Assemble as shown In Plate No. 18. The 
assembly marks on the cap and rod should 
be on the same side. 



PISTON RINGS, PISTON PIN. AND 
CONNECTING ROD 

48. PISTON. (See Plate No. 18.) The piston 
in this engine Is made of a special alloy 
which Is very light in weight. The lands of 
the piston are smaller than the skirt to 
allow for greater expansion at the piston 
head. This clearance Is to compensate for 
the expansion of the aluminum when hot. 
When piston Is removed be sure to clean 
carbon from head and ring grooves. If pis- 
ton Is out of round or scored It should be 
replaced with a new one. If an oversize 
piston is necessary, we recommend that en- 
gine be sent to our nearest service or- 
ganization. 



Platan Assembly — Plate No. IS 


COWBESSIOX IIIOS-w^^^ 


%. ?S>-i.oeK 


MplgPX 


e 


HST0» 




^ sol^u 




PI* 


Oil «IN8^\ It , 




> 




HJTM 


L St 




SXVv7.4JStmi.IIIO «*«» 


L|v 


i^sV 


HEUOCM READ SC«E» -^ ^| 






« — IIIPCI 


»3*-«J 





4*. PISTON RINGS. The piston rings when 
fitted In the cylinder should hare a gap of 
89?" to .017". The rings should be fitted In 



CRANKCASE BREATHER VALVE 

52. The breather valve used on this engine 
la mounted In the valve chamber (See Plate 
No. 14) and consists of the following parts: 

No. 26880 Retainer Spring. 
No. 22216 Cover. 
No. 6E968 Valve Disk. 
No. 21810 Valve Body. 
No. 27827 Gasket. 

If this becomes clogged it will cause oil 
leaks. Therefore, It Is well that It be 
checked and cleaned whenever engine 1» 
taken apart for service. 

53. TO REMOVE AND CLEAN. 

a. Remove valve plate cover. 

b. Remove oil spray shield. 

e. Remove retainer spring. (This holds 
breather valve In place.) 

d. Remove breather valve and wash the 
parts thoroughly with kerosene or gasoline, 
blow out and dry. 
Replace by reversing the above procedure. 



AIR CLEANER 

54. TO REMOVE, CLEAN, AND REPLACE. 

(See Plate No. 1».) The air cleaner is to 
protect the engine from dirt and grit. It 
Is therefore important that It be cleaned 
and refilled every 25 hours the engine is In 
use (hourly If operating under dusty oper- 
ating conditions) to prevent clogging. Clean 
as follows: 

a. Remove thumb nut and slide entire 
cleaner over rod. 

b. Remove filter and bowl and pour out oil. 



16 



MAINTENANCE SECTION 



Air Cleaner Awwmbly — Fig. IS 




o. Wash the Alter element In gasoline. 
Shake to remove excess gasoline so that 



engine will not be flooded when starting. 

d. Clean bowl and dry by submerging In 
gasoline and wipe dry. 

e. Replace parts. Fill cleaner with same 
oil as used In the crankcase up to the level 
Indicated by mark on the outside of the 
cleaner bowl. Be sure gasket Is In place 
between filter and bowl. See Instructions 
on nameplate. 



OVERLOAD 

55. TO PREVENT. Always be sure that 
the machine the engine is operating is well 
lubricated and running freely. If it is not, 
It may cause the engine to be overloaded, 
resulting in It overheating, losing power, 
or stopping entirely. 



4 



PARTS SECTION IT 



PARTS SECTION 
INDEX 

How to Find the Correct Number of Part You Need (See below) 

Page 
Illustrations of Parts Groups: 

Cylinder, Piston, Connecting Rod, Crankshaft and Flywheel 
Parts 18 

Fuel System, Blower Case and Ignition Parts 19 

Starter Parts 20 

Numerical Parts List 21 to 26 



• • • 



■■"•• HOW TO FIND THE CORRECT NUMBER 

OF THE PART YOU NEED 

a. Make a note of your engine TYPE! NUMBER (not the Serial 
Number) tbut appears on the metal nameplate attached to cylinder 
shield. 

b. Itefer to pages Illustrating parts and locate the Master Part 
Number by comparing your old part with Illustrations, Assemblies 
Include all part numbers shown In frames In Illustration, All parts 
shown In assembly frames on which part numbers are given can be 
purchased separately* 

c. After the Master Part Number has been identified, refer to the 
following Parts List where these Master Part Numbers are listed In 
numerical order. 

THE MASTER PART IS USED ON ALL TYPES OP ENGINES EXCEPT 
THOSE TYPES LISTED UNDER "NOTE." 

1 It a "Note" appear* below the Master Part Number, this means 
that this part Is made different from the Master Part for certain 
types, and If your type Is listed under "Note" order the part re- 
ferred to. 

e. If your Engine Type Number does not appear after any part num- 
ber listed under "Note," order the Master Part Number. 

f. When ordering parts — or writing for service Information — al- 
ways specify the MODEL LETTER — TYPE NUMBER — and SERIAL 
NUMBER of your engine. 

g. All parts should be ordered from the nearest member of our 
Nation-wide Service Organization. (See page 29.) In ordering parts 
by mail, selling prices will be furnished on request or parts will 
be shipped at prevailing prices. 



18 



PARTS SECTION 




(J--68122 
- 63785 



92235- 
92227- , 
22243-<p) 



2J443H} 



2I?83 RINC,. PISTON, COMP TOP STD. 
21376- .OIO'- OVERSI2E 
2I377-.020"- ■• 

2I376-.030"- ■ 

61756- Bin<3. PISTON.COMR CENTER STD. 

61768- .OIO"- OVERSIZE 

61769 -.020'- 

61770 --030"- 

41757- RIN<5, PISTON, OIL. STANOARO, 
61771 -.OIO" - OVERSIZE 
CI772-.020'- » 

61773- .OJO"- - ) -zoom 




22236 

CO 14 



PlNQ SETS- PISTON 
29O290- STANOARO 
29020I-.OIO"- OS. 
29059C-. O2o"- " 
290292-O3O"- • 



29739- PISTON ASSY STO 
2977S - OIO" - OVERSIZE 

29779 -.020'- 

29780 -.050"- 
includes pi5ton rings 
aho piston Pin locics 



?40ZC(f| (fl ) (g l 2CQ26 



2QQ98Q PIN ASSY PISTON, STfa 
290981 Pin ASSY PISTON OOg'aS 



91758 



61973 





290962 
ROD ASSEMBLY 
CONNECTING 



91708 
CI7CO 



29835 FLYWHEEL 



291322 



2733- 99 



CYLINDER, PISTON, CONNECTING ROD, CRANKSHAFT AND 

FLYWHEEL PARTS - PLATE No. 20 

A<tomkliot inrlnHa all oarts shown in frames. 



PARTS SECTION 



19 



6fc986CASIN<5 



QzP 92047 



67597-.0O5"THICK.j 

C7C07-009- 

67307-OI5" 



290792 PLATE 



2920 19 MAGNETO ASSEMBLY 




7TH-I29 



FUEL SYSTEM, BLOWER CASE AND IGNITION PARTS - PLATE No. 21 

Aetomklioc inrllirle rill "<"* thr.wn in (rnniai 



20 



PARTS SECTION 




21 IOO HOUSING 

2&032 SPRIMG, 
62538 WASHER 
«770 BALL ' 




291390 PINION 



2914-95 CLUTCH ASSEMBLY 



•29I3S9 
PULLEY^ 



291849 STARTER. 
ASSEMBLY 




Vts-ti* 



STARTER PARTS - PLATE No. 22 
Assemblies include all parts shown in frames. 



PARTS SECTION 



21 



NUMERICAL PARTS LIST 



MASTER 

PART 

No. 



NAME 



SHIPPING 
WEIGHT 
Lb*. On 



21100 Housing — Starter Clutch 

21283 Ring: — Piston, Compression, Top — Standard 

21330 Elbow — Air Cleaner 

21378 Ring- — Piston, Compression, Top — .010" O.S , 

21377 Ring — Piston, Compression, Top — .020" O.S 

21378 Ring — Piston, Compression, Top — 030" O.S 

22011 Cover— Valve 

22031 Lock — Clutch Housing 

22054 Clamp — Control Wire Casing 

23206 Shield— Cylinder 

22216 Cover — Breather 

22217 Shield — Oil Spray 

22230 Washer — Needle Valve 

22238 Washer — Cylinder Mounting 

22243 Washer — Cylinder Mounting 

•22353 Washer — Valve Cover 

22368 Washer — Control Lever 

22308 Washer — Bell Crank 

22725 Washer — Control Lever 

228S4 Washer — Spacer 

22800 Housing — Blower * 

22963 Washer — Cylinder Head 

22980 Spring — Starter 

23056 Key — Pulley — % " Square 

23184 Retainer — Valve Spring 

23187 Pin — Valve Spring Retainer 

23431 Nut— Needle Valve 

23432 Seat — Needle Valve 

23433 Valve — Needle 

23443 Pin — Dowel 

23444 Stud — Valve Cover 

26021 Spring — Intake Valve 

26026 Lock — Piston Pin 

26032 Spring — Clutch Retainer 

26099 Wire — Control 64" long 

Sole: If longer wire Is required, specify length In inches; if shorter 
wire is needed, order No. 26099 and cut to required length. 

26330 Spring — Breather Retainer 

26836 Spring — Needle Valve 

26478 Spring — Exhaust Valve 

26641 Spring — Oil Hole Cover 

26657 Spring — Choke and Throttle Adjustment Screw 

26762 Link — Governor 

26763 Spring — Governor 

27043 Gasket — Engine Base .... 

27062 Gasket — Air Cleaner Mounting 

27323 Gasket — Breather Body 

•27355 Gasket — Carburetor Mounting 

27356 Gasket — Air Cleaner 

27404 Gasket — Fuel Tank Mounting 

27423 Gasket — Air Cleaner Mounting 

29667 Breaker Assembly — Ignition 

20693 Plus — Spark — With Gasket 

29739 Piston Assembly — Standard 

• Included In Godot Sat — Furl No. 281178. 






22 



PARTS SECTION 



MASTER 

PART 

No. 



NAME 



SHIPPING 
WEIGHT 
libs. Ox. 



29778 Piston Assembly — .010* O.S 

29779 Piston Assembly — .020* O.S 

29780 Piston Assembly — .030* O.S 

29806 Gasket — Spark Plug 

29835 Flywheel — Magneto 6 

29861 Condenser 

29878 Rope — Starter 

82005 Washer— Bell Crank (Replaced by Part No. 22398) 

38852 Washer— Armature 

61703 Gear— Cam l 

61756 Ring — Piston, Compression, Center — Standard 

61757 Ring— Piston, Oil— Standard 

61700 Key— Flywheel ] , 

61768 Ring — Piston, Compression, Center — .010" O.S 

61769 Ring — Piston, Compression, Center — .020* O.S 

61770 Ring — Piston, Compression, Center — .030* O.S 

61771 Ring— Piston, oil— .010" O.S 

61772 Ring — Piston, Oil — .020" O.S 

61773 Ring — Piston, Oil — .030" O.S 

61973 Pulley — Drive — 2%" O.D 1 

Note: No. 61781 Pulley — Drive — 3ft" O.D 1 

Used on type No. 700046. 

02199 Washer — Blower Housing Mounting 

62538 Washer — Clutch Retainer 

62577 Washer— Flywheel 

02693 Pulley— Rope Starter 

Note: For Pulley with screen attached order Part No. 291537. 

62835 Cover — Dust 

62966 Switch — Stop 

63426 Locknut — Control Wire Casing 

63770 Ball — Clutch 

63782 Valve — Intake 

63785 Shaft — Cam 

63788 Tappet — Valve 

63807 Valve — Exhaust 

65704 Plunger — Breaker Point 

65787 Gasket — Needle Valve Nut 

65968 Disk — Breather 

65978 Packing — Needle Valve 

•66114 Washer — Cylinder Mounting 

66986 Casing— Control Wire— 48" long 

Note: If a longer casing la needed, specify length in Inches; if a 
shorter casing is needed order No. 66986 and cut to required 
length. 

•67807 Gasket — Magneto Plate — .015" thick 

•67527 Gasket — Valve Cover 

•67597 Gasket — Magneto Plate — .005" thick 

•67607 Gasket — Magneto Plate — .009* thick 

68122 Plug — Cam Shaft 

69221 Cap — Fuel Tank 

89660 Seal — Oil 

89677 Bushing — Cylinder or Magneto 

Includes: No. 89060 Seal — Oil. 

89066 Muffler 

90081 Screw— Machine, Rd. Hd.— 10-32x%" 

• Included in Gasket Set — Part No. 291376. 



PARTS SECTION 



23 



HASTEIl 

PART 

No. 



NAME! 



SHIPPING 
WEIGHT 
Lba. Ox. 



80355 
00832 
00847 
00801 
00016 
91050 
01084 
81237 
01324 
01440 
01708 
81711 



81758 
81810 



81811 

02067 

82O80 

82128 

82227 

82235 

82236 

02287 

02200 

02306 

02604 

02634 

82663 

02664 

02686 

82688 

82701 



82702 



92703 



82708 



82708 



•8288 



Nut— Hex.— No. 10-32 

Washer — Lock — %x,ftx5/64» 

Nut— Hex.— 14-28 

Screw— Cap. Hex. Hd.— %-20x%" 

Screw— Machine, Rd. Hd.— %-20xl4" 

Washer — Lock No. 12xAxA" 

Plug— Pipe— H* 

Washer — Lock — %xftx3/64» 

Washer — *4" Standard 

Screw — Cylinder Head (1%" long) 

Nut — Flywheel 

Screw — Cylinder Head (1* long) 

Note: No. 01203 Screw — Cylinder Head (1%* long) 

No. 63337 Spacer — %* long 

Used in first hole in cylinder head on carburetor side on 
type Nos. 700013, 700021. 

Screw— Set, Socket— A-24x%" (Cup Point) 

Elbow — Exhaust 

Note: No. 01812 Elbow — Exhaust 

Used on type Nos. 700014, 700046, 700052. 

No. 91060 Elbow — Exhaust 

No. 02124 Nipple — Exhaust 

Used on type No. 700066. 

Locknut — Muffler Elbow 

Nut— Wing 

Screw— Machine, Fill. Hd.— %-20x%» 

Nut — Hex.— %-28 

Washer — Lock — Shakeproof No. 1120 

Screw — Cylinder Mounting 

Screw — Cylinder Mounting 

Screw— Machine, Rd. Hd.— 10-32x%» 

Washer— Lock— No. 10xftx3/64" 

Screw— Cap. Hex. Hd.— %-28x%* 

Screw — Connecting Rod 

Screw — Machine, Rd. Hd. — B-40x%» 

Screw — Starter Mounting 

Nut — Starter Mounting 

Screw — Machine, Rd. Hd. — 5-40x%" 

Screw— Machine, Fill. Hd.— 10-32x1%" 

Screw — Magneto Mounting Sem 

Notti No. 80832 Washer — Lock — ^xA«A" 

Used on earlier model engines. 

Screw — Condenser Mounting Sem 

Note: No. 80307 Washer — Lock — No. 8xftxA" 

Used on earlier model engines. 

Screw — Dust Cover Mounting Sem 

Note: No. 80307 Washer — Lock — No. 8xftxA" 

Used on earlier model engines. 

Screw — Armature Mounting Sem 

Nolt: No. 82317 Washer — Lock — Shakeproof No. 1208 

Used on earlier model engines. 

Screw — Breaker Mounting Sem 

Not*: No. 88852 Washer 

No. 92317 Washer — Lock — Shakeproof No. 1208 

Used on earlier model engines. 
Cable — Ignition 



24 



PARTS SECTION 



MASTER 

PART 

No. 



NAME 



SHIPPING 
WEIGHT 
Lbs. Oa. 



210008 Throttle — Carburetor 

210028 Body — Breather 

Note: No. 21310 Body— Breather (with two grooves) 

Used on engines before Serial No. 68505. 

220020 Lock — Connecting Rod Screw 

220003 Retainer — Spring 

220105 Connector — Governor Link 

220107 Cam— Speed Adjuster 

Note: No. 220134 Cam — Governor Control 

Used on type Nos. 790014, 700040. 

220108 Lever— Speed Adjuster 

220137 Screen — Blower Housing 

220145 Crank — Bell 

280030 Screw — Carburetor Cam and Lever 

230058 Stud — Air Cleaner 

Not*: No. 23334 Stud— Air Cleaner— 6A" long . ' . 

Used on type No. 700014. 

200280 Ring Set— Standard Piston 

280201 Ring Set— .010" O.S. Piston ......[..... 

280282 Ring Set— .030" O.S. Piston 

280548 Breather Assembly 

280568 Lever Assembly — Control 

280584 Base — Control Lever ' 

280580 Ring Set— .020" O.S. Piston 

280642 Lever — Control 

200782 Plate— Magneto 2 

280840 Base Assembly — Engine 

Note: No. 280838 Base Assembly— Engine 

Used on type Nos. 700063, 700061. 

280055 Cylinder Assembly ., 

Note: No. 291110 Cylinder Assembly 13 

Used on type Nos. 700012, 700019, 700041, 700042. 

No. 292026 Cylinder Assembly 13 

Used on type Nos. 700051, 700058. 

280862 Rod Assembly — Connecting 

280880 Pin Assembly— Piston— Standard 

200081 Pin Assembly— Piston— .005" O.S 

291113 Cover— Oil Hole 

281114 Cover Assembly — Oil Hole 

•291301 Gasket— Cylinder Head 

291322 Crankshaft g 

Note: No. 26693 Crankshaft j 

Used on type Nos. 700015, 700020, 700024, 700055. 

No. 26716 Crankshaft j 

Used on type Nos. 700016, 700018, 700021, 700031, 700038, 700042 
700048, 700061, 700054, 700060. 

No. 26779 Crankshaft , 

Used on type Nos. 700034, 700064. 

No. 26780 Crankshaft 3 

Used on type No. 700037. 

No. 291326 Crankshaft , 

Used on type Nos. 700013, 700019, 700028, 700026, 700028, 700030 
700036, 700036, 700040, 700041, 700043, 700044, 700049 700050 
700061, 700062. 
291376 Gasket Set 

• Included in Gaiket Set — Part No. 2* J 378. 



PARTS SECTION 



25 



MASTER 

PART 

NO. 



201380 
291389 
201390 
291391 
291495 
291498 
291537 
291017 
291707 
201820 
291834 
291838 
201849 
291882 
291900 



291005 



291975 
292019 



JIAMK 



SHIPPING 

WEIGHT 
I,ba. Ok. 



Head Assembly — Cylinder 1 

Pulley — Retrievable Starter * 

Pinion — Starter l 

Housing — Starter 

Clutch Assembly — Starter * 

Rope — Starter 

Screen Assembly — Rotating 

Armature — Magneto 2 

Housing — Blower ! 

Plate — Drag 

Tank Assembly — Fuel l 

Cleaner Assembly — Air 1 

Starter Assembly — Retrievable * 

Control — Governor 

Carburetor Assembly l 

Note: No. 291902 Carburetor Assembly 1 

Used on type Nos. 700014, 700040, 700048, 700063. 

No. 291957 Carburetor Assembly 1 

Used on type Nos. 700034, 700037, 700049, 700064. 

Breather Assembly 

Note: No. 290548 Breather Assembly 

Used on engines before Serial No. 68505. 

Blade Assembly — Governor 

Magneto Assembly • 



12 



MEMOS 



MEMOS 



MEMOS 



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NATION-WIDE SERVICE ORGANIZATION 



To provide prompt and efficient service 
on Briggs & Stratton engines, Authorized 
Service Distributors and Engine Service 
Stations are located in the principal cities 
of the United States and Canada. 

Each Authorized Service Organization 
carries a stock of original Briggs & Strat- 
ton repair parts. Each is equipped with 
special factory service tools and factory- 
trained mechanics, assuring expert repair 
service on all Briggs & Stratton engines. 

All Authorized Service Organizations are 
Instructed by the factory to replace free of 
charge all parts found to be defective In 
either material or workmanship, according 
to the conditions of the Briggs & Stratton 
Warranty. 

All gratis work done under the warranty 
Is the responsibility of the Authorized Ser- 
vice Organization until all the material in- 
volved and supporting facts are submitted 
to and approved by the factory. 



In a difference of opinion regarding a 
Service Organization's decision, their terms 
should be accepted and, either through 
them or direct, have all materials and sup- 
porting facts submitted to the factory for 
review. 

Genuine Briggs & Stratton service will 
assure continuous engine satisfaction. Our 
long experience In engine maintenance 
prompts us to urge that all service work 
be done by an Authorized Service Organi- 
zation or at our factory. Mechanics un- 
familiar with Briggs & Stratton products, 
or without proper tools, should not be per- 
mitted to make major repairs. 

Parts and repair work are F. O. B. Fac- 
tory or any Authorized Briggs & Stratton 
Service Distributor. The Distributor nearest 
you (see back cover page) will be glad 
to give you the name of our Engine Service 
Organization in your locality. Space does 
not permit listing here. 



BRIGGS & STRATTON ENGINE WARRANTY 

BE SURE TO FILL IN AND MAIL WARRANTY REGISTRATION 
CARD WHICH ACCOMPANIED ENGINE AT TIME OF PURCHASE 



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THE WARRANTY — For Ninety Days from purchase date, Briggs & Stratton 
Corporation will replace for the original purchaser, FREE OF CHARGE, any 
part or parts found, upon examination at any Factory Authorized Service Dis- 
tributor or at our factory at Milwaukee, Wisconsin, to be defective under normal 
use and service, on account of defects In material or workmanship. 

All transportation charges on part or parts submitted for replacement under 
this warranty must be borne by purchaser. 

WHAT THIS WARRANTY DOBS NOT INCLUDE — This warranty does not 
cover the free replacement of parts Inoperative because of wear occasioned by 
use. It does not cover the labor cost of replacing parts, neither Is It effective 
if the engine has been the subject of misuse, negligence, or accident, nor if It 
has been repaired or altered, outside of our Milwaukee Factory or any factory- 
approved service station, in any way which, in our judgment, affects its condition 
or operation. 



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WARRANTY INSTRUCTIONS 



When sending an engine, or engine parts, 
to a Briggs & Stratton Service Organiza- 
tion for service, at the same time always 
send by mail the following information: 
Model Letter (or Number), Type Number, 
and Serial Number of the engine. (Take 
from metal plate on engine). 
Date purchased. 
Kind of equipment engine is used on. 



Name or trademark of manufacturer. 
Name and address of dealer from whom 
purchased. 

Approximate number of hours engine has 
run since equipment was bought. 
Also, give complete report of trouble experi- 
enced and special servicing instructions. 
The above Information is necessary to in- 
sure prompt and proper service. 



■ 



AUTHORIZED SERVICE ORGANIZATION 

There is a member of the Briggs & Stratton Service Organization in your neighborhood who is 
fully qualified to take care of your service needs. Space does not permit listing here, but if you will 
write to the nearest distributor listed below, they will be glad to supply you with name and address. 

STATE CITY NAME LOCATION 

Alabama. Birmingham 3 Birmingham Electric Battery Co Ave. B. at 23rd St. 

Arizona. Phoenix Motor Supply Co.... 402-414 N. Central Ave. 

California. Los Angeles 16 Electric Equipment Company 1611 S. Hope St. 

California. San Francisco 9 Frank Edwards Co., Automotive Service Div...382-4 Sixth St. 

Colorado Denver 1 Spitzer Electric Company 48 W. 9th Ave. 

Florida Jacksonville 1 Spencer Electric, Inc 40 W. Beaver St. 

Florida. Miami 82 Electric Equipment Co 42-68 N. W. 4th St. 

Florida. Tampa 1 Spencer Auto Electric, Inc 607-11 E. Cass St. 

Georgia. Atlanta 3 Auto Electric & Magneto Co 477 Spring St., N. W. 

Illinois Chicago 16 Mid-States Auto Electric Co 1906 S. Michigan Ave. 

Indiana Indianapolis 4 Gulling Auto Electric Co 460 N. Capitol Ave. 

Iowa. Des Moines 9 Magneto Carburetor & Electric Co., Inc 1308 Grand Ave. 

Kansas. Wichita 2 The E. S. Cowie Electric Co 230 S. Topeka Ave. 

Kentucky Lexington 34 Kentucky Ignition Co., Incorporated Rose and Vine Ste. 

Louisiana. New Orleans 1 A. C. Suhren Co 1819 St. Charles Ave. 

Louisiana. Shreveport 80 Chain Battery & Automotive Supply, Inc Marshall at Cotton Sta. 

Massachusetts. Boston 16 Wm. H. Flaherty Co 48-62 Cummington St. 

Michigan Detroit 1 Auto Electric & Service Corporation. 90 Selden Ave. 

Minnesota Minneapolis 2 Reinhard Brothers Co., Inc 11 S. Ninth St. 

Missouri Kansas City 8. The E. S. Cowie Electric Co 1819 Wyandotte St. 

Missouri St. Louis 3 Medart Auto Electric Co., Inc 3184 Washington Blvd. 

Montana Billings Original Equipment, Inc 423 N. Broadway 

Nebraska Lincoln 8 Carl A. Anderson, Inc 1637 P Street 

Nebraska Omaha 2 Carl A. Anderson, Inc 16th and Jones St. 

New Mexico. Albuquerque Spitzer Electrical Co. of New Mexico. 609 N. 2nd St. 

New York Buffalo 14 The Battery & Starter Co., Inc 2606 Main St. 

New York New York 23 The Durham Co., Inc 17 W. 60th St. 

New York. Syracuse 4 F. A. Crossman, Inc 943 W. Genesee St. 

North Carolina Charlotte 1 Carolina Rim & Wheel Co 812 N. Graham St. 

North Dakota Fargo. Reinhard Brothers Co., Inc 801 N. Pacific Ave. 

North Dakota Minot. Reinhard Brothers Co., Inc 18-20 8rd St., N. E. 

Ohio. Cincinnati 2 Gardner, Ino 1847 Reading Rd. 

0h |° Cleveland 16 The Electric Power Maintenance Co Prospect at East 30th 

ohio Toledo 2 Electric Power & Maintenance Co 26-30 Seventeenth St. 

Oklahoma. Oklahoma City 2 American Electric Ignition Co 124 N. W. 8th St. 

Oregon Portland 9 Tracey & Co., Inc N. W. 10th and Gllsan 

Pennsylvania. Philadelphia 80 Auto Equipment & Service Co., Inc 1622-24 Fairmount Ave. 

Pennsylvania. Pittsburgh 24 Pitt Auto Electric Company 6136 Baum Blvd. 

South Dakota. Aberdeen Reinhard Brothers Co., Inc 817 s. Lincoln St. 

South Dakota. Sioux Falls. Reinhard Brothers Co 226 E. 11th St. 

Tennessee. Knoxville 7 R. T. Clapp Company 401-7 N. Broadway 

Tennessee. Memphis 4 Automotive Electric Service Co 982 Linden Ave. 

TexM Amarillc The E. S. Cowie Electric Co 700 Van Buren St. 

Texas. Dallas 1 Beard & Stone Electric Company, Inc 2101 Bryan St. 

TeJtas El p «"° Motor Supply Co 308 Chihuahua St. 

Texas - Houston 1 Beard & Stone Electric Company, Inc Milam at Polk Ave. 

Texas San Antonio 6 S. X. Callahan 426 N. Florea St. 

Utah Salt Lak « City 18 Frank Edwards Co., Motor Equipment Div 561 So. State St. 

Virginia. Richmond Richmond Battery & Ignition Co 1819 W. Broad St. 

Washington Seattle 14 Sunset Electric Co 800 Westlake North 

Washington. Spokane Sunset Electric Co First and Adams 

Wisconsin Milwaukee 2 Wisconsin Magneto Co 918 N. Broadway 

DOMINION OF CANADA 

Manitoba Winnipeg Beattie Auto Electric Limited. 176 Fort St. 

Ontario. Toronto 6 Auto Electric Service Company, Limited. 1009 Bay St. 

BRIGGS & STRATTON CORP., Milwaukee 1, Wis., U. S. A. 



Printed in U. S. A. 



Form No. 27407-129-180