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SERVICE AND ADJUSTMENTS
ENGINE
L
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. ]f adjustment is
necessary, proceed as f0}lows:
•
With engine not running, move throttle control lever
from slow (,,_h.) to choke ( X ) position.
Slowty move
ever from choke (",I) to fast (,f_) pos t on.
=
Checkthatho]es"A,_ingovernorcontrolleverandhole
in governor pJate Jine-up. If holes "A" are not aligned,
Joosen clamp screw and move throttle cable until holes
are aligned.
Tighten clamp screw securely.
GOVERNOR
GOVERNOR
CONTROL
LEVER
CONTROL
PLATE
\
\
\
THROTTLE
CABLE
HOLES "A"
CLAMP
SCREW
FIG. 27
TO ADJUST
CARBURETOR
(See
Fig. 28)
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 in fuel,
temperature, altitude or toad. ff the carburetor does need
adjustment, proceed as fo{lows:
In general, turning idie mixture valve in (c!ockwise) de-
creases the supply of fuel to the engine giving a leaner fue!/
air mixture. Turning the idle mixture valve out (counter-
clockwise) increases the supply of fuel to the engine giving
a richer fuel/air mixture.
IMPORTANT:
DAMAGE
TO THE NEEDLE
VALVE
AND
THE SEAT IN CARBURETOR
MAY RESULT
IF SCREW
IS
TURNED
IN TOO TIGHT,
PRELIMINARY
SETTING -
Air cleaner assembly must be assembled to the carbu-
retor when making carburetor adjustments.
•
Be sure the throttle control cable is adjusted properly
(see above).
With engine off turn idle mixture valve in (clockwise)
closing it finger tight and then turn out (counterclock-
wise) 1 fullturn.
FINAL SETTING -
Start engine and allow to warm for five minutes. Make
final adjustments with engine running and shift/motion
control lever in neutra_l(N) position.
. Move throttle control iever to slow (,_)
position. With
finger, rotate and hold throttle lever against idle speed
screw. Turn idle speed screw to attain i750 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 o
-
Move throttle control lever from slow (,.g_) 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 THINK THE ENGINE-GOVERNED
H_GH 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
IDLE MIXTURE
VALVE
FIG. 28
24'
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