Advertisement
....................
ii
:1,1
i null
' ii iiii
SERVmCE A D ADJUSTMENTS
TO ADJUST
CARBURETOR
(See
Fig. 36) ....
The carburetor has been present at the factory and adjust-
ment should not be necessary_ However, minor adjustment
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 fuel t'o 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 properly (see 'q-O ADJUST
THROTTLE
CONTROL CABLE" in the Sewice 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 -
o
Start engine and allow to warm for five minutes Make
final adjustments with engine running and shift/motion
control lever in neutral (N) position,,
o
The high idle is set at the factory and cannot be
adjusted.
•
Idle speed setting - With throttle control lever in slow
p6s'iti'o'n; engine should idle at 1200 RPM If engine
idles too stow or fast, turn idle speed adjusting screw in
or out until correct idle is attained..
o
Idle fuel needle settincl - With throttle control lever in
slow position, turn idle fuel adjusting needle in (clock-
wise) until engine speed decreases and then turn out
(counterclockwise)
approximately 3/4 turn to obtai n the
best low speed performance°
=
Recheck idle speed. Readjust if necessary_
ACCELERATION
TEST -
o
Move throttle control lever from slow to fast position. If
engine hesitates or dies, turn idle fuel adjustlrig needle
out (counterclockwise)
1/8 turn., Repeat test and con-
tinue 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.. OVERSPEED1NG 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/
DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS.
28
Advertisement
