SERVICE A
ENGINE
TO ADJUST THROTTLE CONTROL CABLE
(See Fig. 27)
The throttle control has been preset at the factory and adjustment should not be necessary. Check adjustment as described below before loosening cable. If adjustment is necessary, proceed as follows:
•With engine not running, move throttle control lever from slow (,_) to choke (XI) position. Slowly move lever from choke (N) to fast (_) post on.
•Check that holes "A" in governor control lever and hole in governor plate
GOVERNOR | GOVERNOR |
CONTROL LEVER | CONTROL PLATE |
\ |
|
/
HOLES "A" | CLAMP | THROTTLE |
| SCREW | CABLE |
| FaG. 27 |
|
AJUSTMENTS
FINAL SETTING *
,Start engine and allow to warm for five minutes. Make fina! adjustments with engine running and shift/motion control lever in neutral (N) position.
*Move throttle control lever to slow (,_!) position, 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 in (clockwise) until en- gine begins to die and then turn out (counterclockwise) 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 (counterclockwise) 1/8 turn. Repeat test and continue to adjust, if necessary, until engine acceler- ates smoothly.
High speed stop is factory adjusted. Do not adjust - damage may result.
IMPORTANT: NEVER TAMPER WiTH THE ENGINE
GOVERNOR, WHICH iS FACTORY SET FOR PROPER
ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE
THE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS. IF YOU THtNKTHE
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND
EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.
THROTTLE | iDLE SPEED |
LEVER | SCREW |
The carburetor has been preset at the factory and adjust- ment should not be necessary. However, minor adjust- ment may be required to compensate for differences infuel, temperature, altitude or load. if the carburetor does need adjustment, proceed as follows:
In general, turning idle mixture valve in (clockwise) de- creases the supply of fuel to the engine giving a leaner fuel/ air mixture. Turning the idte mixture valve out (counter-
clockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture.
#_PORTANT: DAMAGE TO THE NEEDLE VALVE AND
THE SEAT IN CARBURETOR MAY RESULT IF SCREWIS TURNED IN TOO TIGHT.
iDLE M_XTURE VALVE
PRELIMINARY SETTING - | FIG. 28 |
|
•Air cleaner assembly must be assembled to the carbu- retor when making carburetor adjustments.
oBe sure the throttle control cable is adjusted properly (see above).
oWith engine off turn idle mixture valve in (clockwise) dosing it finger tight and then turn out (counterclock° wise) 1 full turn.
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