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TO ADJUST CARBURETOR
NOTE: The carburetoron this engine is
towemission. It is equippedwith an idle
fuel adjustingneedle with a limitercap,
which allows some adjustment within the
limitsallowed by the cap. Do not attempt
to remove the limitercap. The limitercap
cannot be removed withoutbreaking the
adjustingneedle.
The carburetorhas been preset at the fac-
tory and adjustmentshould not be neces-
sary. However, minor adjustmentmay be
requiredto compensate for differences in
fuel, temperature, altitudeor load. If the
carburetor does need adjustment, proceed
as follows:
In general, turning idle mixture valve in
(clockwise)decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Turning the idle mixturevalve out
(counterclockwise)increases the supply of
fuel to the engine givinga richerfueVair
mixture.
IMPORTANT: Damage to the needle valve
and the seat in carburetormay result if
screw is turned in too tight.
PRELIMINARY SETTING -
o Air cleaner assembly must be assem-
bled to the carburetorwhen making car-
buretor adjustments.
o Be sure the throttle control cable is
adjustedproperly (see above).
FINAL SETTING -
o Start engine and allow to warm for five
minutes. Make final adjustmentswith
engine runningand shift/motioncontrol
lever in neutral (N) position.
° Move throttlecontrol lever to slow posi-
tion. With finger, rotate and hold throttle
lever against idle speed screw. Turn idle
speed screwto attain 1750 RPM.
o While stillholdingthrottle lever against
idle speed screw, turn idle mixture valve
full travel cloclm_isethen counterclock-
wise untilengine runs rough.Turn valve
to a pointmidway between those two
positions.Release throttlelever.ACCEL-
ERATION TEST-
o Move throttlecontrol lever from slow to
fast position.If engine hesitates or dies,
turn idle mixture valve out (counter-
clockwise) 1/8 tum. Repeat test and
continueto adjust, if necessary,until
engine accelerates smoothly.
High speed stop is factory adjusted. Do
not adjust--damage may result.
IMPORTANT; Never tamper withthe
engine governor,which is factory set for
proper engine speed, overspeeding the
engine above the factory high speed set-
ting can be dangerous, if you thinkthe
engine-governed high speed needs
adjusting,contact your nearest authorized
service center, which has proper equip-
ment to make any necessary adjustments.
Idle Speed Throttle
Screw Lever
i
Limtter
26
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