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 off turn idle fuel 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 idle speed 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 is factory 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 26