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SERVICE AND ADJUSTMENTS
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TO ADJUST CHOKE CONTROL (See Fig. 35) • With throttle control lever in slow (*_,) position, hold
throttle lever against idle speed screw and adjust idle
The choke control has been preset at the factory and
adjustment should not be necessary. Checkadjustmentas speed screw to obtain 1200 to 1400 RPM
described below before loosening cable, If adjustment is . While still holding throttle lever against idle speed
necessary, proceed as follows: screw, turn idle mixture screw in (clockwise) until
- With engine not running, move choke control (located engine begins to die and then turn out (counterc!ock-
on dash panel) to full choke (N) position, wise) until engine runs rough_ Turn screw to a point
o Remove air cleaner cover, filter and cartridge plate to midway between those two positions..
expose carburetor choke (see "AIR FILTER" in the . Continuetoholdthrottleleveragainstidlespeedscrew
Customer Responsibilities section of this manual), and adjust idle speed screwto obtain 900 to 1200 RPM
o Choke should be closed. If it is not, loosen casing Release throttle lever.
clamp screw and move choke cable until choke is
completely closed_ Tighten casing clamp screw se-
curely_
o Reassemble air cleaner.
CHOKE
CLOSED
LEVER
CLAMP
SCREW
FIG. 35
TO ADJUST CARBURETOR (See Figs. 36 &
37)
The carburetor has been preset at the factory and adjust-
ment should not be necessary However, minor adjust-
ment may be required tocompensate for differences infuel,
temperature, altitude or load. If the carburetor does need
adjustment, proceed as follows:
In general, turning the mixture screw in (clockwise) de-
creases the supply ofl'uei to the engine giving a leaner fuel/
air mixture. Turning the mixture screw out (counterclock-
wise) increases the supply of fuel to the engine giving a
richer fueltair mixture.
IMPORTANT: DAMAGE TO THE NEEDLES AND THE
SEATS IN CARBURETOR MAY RESULT IF SCREW IS
TURNED tN TOO TIGHT
PRELIMINARY SETTING -
o Be sure you have a clean air filter, and the throttle
control cable and choke are adjusted properly (see
above).
o With engine off turn idle mixture screw in (clockwise)
closing it finger tight and then turn out (counterclock-
wise) 1-1/4 to 1-1/2 turns.
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°
ACCELERATION TEST -
o Move throttle control lever from slow (=_) to fast (,_)
position, If engine hesitates or dies, turn idle mixture
screw out (counterclockwise) 1/8 turn, Repeat test
and continue to adjust, if necessary, until engine accel-
erates 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 OVERSPEEDINGTHEENGINEABOVE
THE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS tF YOU THINK THE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND
EXPERIENCE TO MAKE ANY NECESSARY
ADJUSTMENTS
IDLE SPEED
SCREW
IDLE MIXTURE
SCREW
THROTTLE
LEVER
FIG. 36
IDLE SPEED
SCREW
THROTTLE f
LEVER
IDLE MIXTURE
SCREW
27 FIG. 37