Briggs & Stratton 243434 - Manual (Page 5)

- (cont’d)
GOVERNOR SPEED ADJUSTMENTS
The g o v e r n o r controls the engine speed from idle
through the full operating range. Idle speed should be
no lower than 1000 RPM and top no load speed should
be no higher than 3800 RPM. See illustration to adjust
governor.
Governed Idle Speed Adpstment
The shorter spring keeps the engine on governor, even
at idle speed. If moderate loads are applied at idle,
the engine will not stall.
First make final carburetor mixture adjustments. Then
place remote control in idle position. Hold throttle
shaft in closed position and adjust idle speed screw
to 1000 RPM. Release the throttle. With remote con-
trol in idle position, adjust upper elastic stop nut to
1200 RPM.
REMOTE SPEED CONTROL ADJUSTMENT
Engine speed is controlled by movement of the control
lever. To adjust: Move control lever to HIGH speed
position. Loosen screw on swivel. Move wire through
swivel until desired operating speed is obtained. Re­
tighten swivel screw, bend loose end of wire around
swivel. Cut off excess wire.
S e c t i o n
5
GENERAL INFORMATION
These engines are single cylinder, L-head, air-cooled type
Model Series 243431 to 243434
Bore............ .. ...................................................... 3 1/16"
S t r o k e . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1/4"
Displacement . . . . . . . . . . . . . . . . . 23.94 cu. in.
Horsepower . . . . . . . . . . . . 10.0 max. @ 3600 RPM
Torque (Ft. Lbs.) . . . . . . . . . 16.75 max. @ 2400 RPM
The horsepower ratings listed above are established
in accordance with the Society of Automotive Engi­
neers Test Code-J607. For practical operation, the
horsepower loading should not exceed 85% of these
ratings. Engine power will d jrease 314% for each
1000 feet above sea level and ‘i % for each 10° above
60° F.
TUNE-UP SPECfFfCATIONS
Spark Plug Type A.C. Autolite Champion
Short Plug CS-45 A7N CJ-8
Long Plug GC-46 A71 J-8
Spark Plug Gap . . . ............. 030"
Ignition Point Gap . . . . . .020"
Intake Valve Clearance . . . . .007"-.009"
Exhaust Valve Clearance . . , .017"-.019"
STORAGE INSTRUCTIONS
Engines stored for over 30 days should be completely
drained of fuel to prevent gum deposits forming on
essential carburetor parts, fuel filter, fuel lines and
tank.
a. Remove filter bowl, open shut-off valve and drain
tank completely.
b. Replace filter bowl. Leave fuel valve open.
c. Operate engine until it stops from lack of fuel.
d. While engine is sti 11 warm, drain and clean the oil
sump. Refill with fresh oil.
e. Remove spark plug, pour one ounce of SAE 30 oil
into cylinder and crank slowly to spread oil. Re­
place spark plug.
f. Clean dirt and chaff from cylinder, cylinder head
fins and blower housing.
Major engine repairs should not be attempted unless
you have the proper tools and a thorough knowledge
of internal combustion engines.