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TO ADJUST CARBURETOR (See Fig. 33)
The carburetor has been present at the factory and adjust-
merit should not be necessary_However, minoradjustment
may be required to compensate for" differences in fuel,
temperature, altitude or load. If the carburetor does need
adjustment, proceed as follows:
In general, turning the adjusting needles in (clockwise)
decreases the supply of fuel to the engine giving a leaner
fuel/air mixture° Turning the adjusting needles out (coun-
terclockwise) increases the supply of fuei to the engine
giving a richer fuel/air mixture.
IMPORTANT; DAMAGE TO THE NEEDLES AND THE
SEATS 1N CARBURETOR MAY RESULT IF SCREW IS
TURNED IN TOO TIGHT.
PRELIMINARY SETTING -
• Be sure you have a clean air filter, and the throttle
control cable is adjusted proper!? (see q'O ADJUST
THROTTLE CONTROL CABLE in the Service and
Adjustments section of this manual),.
= With engine offturn idlefuel adjusting needle in (clock-
wise) closing it finger tight and then turn out (counter-
clockwise) 1 turn.
FINAL SETTING -
= Start engine and allow to warm for five minutes, Make
final adjustments with engine running and shift/motion
control lever in neutral (N) position°
° The high idle is set at the factory and cannot be
adjusted,
• Id!e...speedsetting - With throttle control lever'in slow
(._b) position, engine should idle at 1200 RPM. If
engine idles too slow or fast, turn idlespeed adjusting
screw in or out until correct idle is attained,
• Idle fuel needle settino_- With throttle control lever in
slow (.g_) position, turn idte fuei adjusting needfe in
(clockwise) until engine speed decreases and then
turn out (counterclockwise) approximately 3/4 turn to
obtain the best low speed performance,
• Recheck idle speed_ Readjust if necessary.
ACCELERATION TEST -
• Move throttle control lever from slow (,_) to fast (,_)
position_ If engine hesitates or dies, turn idle fuel
adjusting needle out (counterclockwise) 1/8 turn. Re-
peat test and continue to adjust, if necessary, until
engine accelerates smoothly.
High speed stop isfactory adjusted_ Do not adjust-damage
may result.
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH 1S FACTORY SET FOR PROPER
ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE
THE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS,. IF YOU THINKTHE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND
EXPERIENCE TO MAKE ANY NECESSARY
ADJUSTMENTS
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