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TO ADJUST CARBURETOR
NOTE: The carburetor on this engine is
low emission. It is equipped with an idle
fuel adjusting needle with a limiter cap,
which allows some adjustment within the
limits allowed by the cap. Do not attempt
to remove the limiter cap. The limiter cap
cannot be removed without breaking the
adjusting needle.
The carburetor has been preset at the
factory and adjustment should not be
necessary. However, minor adjustment
may be required to compensate for dif-
ferences in fuel, temperature, altitude or
load. If the carburetor does need adjust-
ment, proceed as follows:
In general, turning idle mixture valve in
(clockwise) decreases the supply of fuel
to the engine giving a leaner fuel/air mix-
ture. Turning the idle mixture valve out
(counterclockwise) increases the supply
of fuel to the engine giving a richer fuel/
air mixture.
IMPORTANT: Damage to the needle
valve and the seat in carburetor may re-
sult if screw is turned in too tight.
PRELIMINARY SE'I-FING
• Air cleaner assembly must be assem-
bled to the carburetor when making
carburetor adjustments.
• Be sure the throttle control cable is ad-
justed properly (see above).
FINAL SETTING
• Start engine and allow to warm for five
minutes. Make final adjustments with
engine running and shift/motion con-
trol lever in neutral (N) position.
• Move throttle control lever to slow po-
sition. With finger, rotate and hold
throttle lever against idle speed screw.
Turn idle speed screw to attain 1750
RPM.
• While still holding throttle lever against
idle speed screw, turn idle mixture
valve full travel clockwise then coun-
terclockwise until engine runs rough.
Turn valve to a point midway between
those two positions. Release throttle
lever.
ACCELERATION TEST
• Move throttle control lever from slow to
fast position. If engine hesitates or
dies, turn idle mixture valve out
(counter-clockwise) 1/8 turn. Repeat
test and continue to adjust, if neces-
sary, until engine accelerates
smoothly.
High speed stop is factory adjusted. Do
not adjust_amage may result.
IMPORTANT: Never tamper with the en-
gine governor, which is factory set for
proper engine speed, overspeeding the
engine above the factory high speed set-
ting can be dangerous, if you think the
engine-governed high speed needs ad-
justing, contact your nearest authorized
service center, which has proper equip-
ment to make any necessary adjust-
ments.
Idle Speed Throttle
Screw Lever
Idle Mixture
Valve With
Lirniter
26
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