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SERVICE AND ADJUSTMENTS
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ENGIINE
TO ADJUST
THROTTLE
CONTROL
CABLE
(See Fig. 2g)
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 position. Slowly move lever
from "CHOKE" to "FAST" position,
Checkthat hole in throttle lever and hole in plate line up.
If holes
A are not aligned, loosen clamp screw and
move throttle cable until holes are aligned.
Tighten
clamp screw securely
TO ADJUST
CARBURETOR
(See Fig. 29)
The carburetor has been preset at the factory and ad{ust-
ment should not be necessary°
However, minor adjust-
ment 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 mixture screws in (clockwise) de-
creases the supply of fuet to the engine giving a leaner fue!/
air mixture.
Turning the mixture screws out (counter-
clockwise) increases the supply of fuel to the engine giving
a richer fuel/air mixture.
IMPORTANT:
DAMAGE TO THE NEEDLES AND THE
SEATS IN CARBURETOR
MAY RESULT IF SCREWS
ARE TURNED IN TOO TIGHT.
PRELIMINARY
SETTING -
•
Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above).
o
With engine off turn high speed mixture screw in
(clockwise)
closing it finger tight and then turn out
(counterclockwise) +1 - I/2 turns
•
Turn idle mixture screw in (clockwise) closing finger
tight and then turn out (countercloclwvise) t turn+
FINAL SETTING +
•
Start engine and allow to warm forfive minutes. Make
final adjustments
with engine running and shift/motion
control lever in "NEUTRAL" position.
=
With throttle control lever in "FAST" position, turn high
speed mixture screw in (clockwise_ until engine begins
todiethen turn out (counterclockwise)
untilengine runs
rough. Turn screw to a point midway between those
two positions,
+
With throttle control lever in "SLOW" position, turn idle
mixture screw in (clockwise) until enginebeginstodie
and then turn out (counterclockwise)
until engineruns
rough.. "]'urn screw to a point midway between those
two positions,
•
With throttle control lever in "SLOW" position, engine
should idle at 2100 RPM If engine idles too slow, turn
idle speed screw in (clockwise)
=
If engine idles too fast in "SLOW" position, turn idle
speed screw out (counterclockwise)
ACCELERATION
TEST -
•
Move throttle control lever from "SLOW" to "FAST"
position.
If engine hesitates or dies, turn high speed
mixture screwout (counterclockwise)
1/8turn.
Repeat
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 IS FACTORY SET FOR PROPER
ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE
THE
FACTORY
HIGH
SPEED
SETTING
CAN BE
DANGEROUS° IF YOU THINK THE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING,
CONTACT
YOUR
NEAREST AUTHORIZED SERVICE CENTER, WHICH HAS
PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY
NECESSARY
ADJUSTMENTS.HIGH
SPEED
NEEDS
ADJUSTING, CONTACT YOUR NEAREST AUTHORIZED
SERVICE CENTER, WHICH HAS PROPER EQUIPMENT
AND
EXPERIENCE
TO MAKE
ANY
NECESSARY
ADJUSTMENTS.
PLATE
IDLE SPEED SCREW
THROTTLE CABLE
@
CLAMP
SCREW
THROTTELEVER
FAST
HIGH SPEED
MIXTURE SCREW
FIG. 29
23
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