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SERVICE AND ADJUSTMENTS
ENGINE
TO ADJUST
THROTTLE
CONTROL
CABLE
(See Fig. 34)
The throttle control has been preset at the factory and
adjustment should not be necessary. Check adjustment as
described below before loosening cable° tf adjustment is
necessary, proceed as follows:
°
With engine not running, move throttle control lever
from slow (.€_) to choke (N) position_ Slowly move
lever from choke (1\1)to fast (,_) position.
•
Check to see if hole in throttle lever and hole in speed
control bracket are aligned.,
=
If holes are not aligned, _oosencable clamp screw and
align the holes by inserting a pencil or a 1/4" drill bit
through both holes,.
°
Pu]i throttle cable up to remove slack and tighten cable
clamp screw,, Remove alignment pencil or drill bit.
TO ADJUST CARBURETOR
(See Fig. 35)
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 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 givinga leaner
fuel/air mixture, Turningthe adjusting needlesout (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 NEEDLE
IS
TURNED
IN TOO TIGHT_
NOTE: The carburetor on this engine is tow ernissiono It is
equipped with an idle fuel adjusting needte with a limiter
cap, which allows some adjustment within the limits allowed
by the cap. Do not attempt to remove the limiter cap= The
limiter cap cannot be removed without breaking the adjusting
needle.
°
Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above)_
•
Start engine and allow to warm for five minutes,. Make
adjustments with engine running and shift/motion control
lever in neutral (N) position.
°
ldte speed setting - With throttle control lever in slow
(._)
position, engine should idle at 1750 RPM.
If
engine idles too slow OH' fast, turn idle speed adjusting
screw in or out until correct idle is attained°
.
Idle fuel needle setting - With throttle control lever in
slow (.¢!,) position,turn idle fuel adjustment needle in
clockwise) until engine begins to die and then turn out
counterclockwise) until engine runs rough. Turn needle
o a point midway between those two positions.
o
Recheck idle speed, Readjust if necessary.
ACCELERATION
TEST-
.
Move throttle control lever from slow (.¢!.) to fast (,_)
position.
If engine
hesitates
or dies, turn idle fuel
adjusting
needle out (counterclockwise)
1/8 turn, Re-
peat 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.. OVERSPEEDtNG
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..
CABLE
CLAMP
SCREW
SPEED
BRACKET
FIG. 34
THROTTLE
LEVER
IDLE SPEED
ADJUSTING
IDLE FUEL,
ADJUSTING
NEEDLE
FIG. 35
27
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