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TO ADJUST CARBURETOR
NOTE: The carburetor on this engine }s
tow emission. It is equipped with an idle
fuel adjusting needle with a {imiter cap,
which allows some adjustment within the
limits aUowed by the cap. Do not attempt
to remove the limiter cap. The ;imiter cap
cannot be removed without breaking the
adjusting needle.
The carburetor has been preset at the fac-
tory and adjustment should not be neces_
sary. 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 idle mixture vatve in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Turning the idle mixture valve out
'....
'^-^'^^_
.... _ increases the supply of
fuel to the engine giving a richer fueVair
mixture,
IMPORTANT: Damage to the needle valve
and the seat in carburetor may result if
screw is turned in too tight.
PRELIMINARY
SETTING -
o Air cleaner assembty must be assem-
bled to the carburetor when making car-
buretor adjustments.
• Be sure the throttle control cable is
adjusted property (see above).
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.
• Move throttle control lever to slow posi-
tion. With finger, rotate and hold throttle
lever against idle speed screw. Turn idle
speed screw to attain !750 RPM.
® Whi_e still holding throttle lever against
idle speed screw, turn idle mixture valv,
full travel clockwise then counterciock._
wise unti_ engine Funs rough. Turn valw
to a point midway between those two
positions. Release throttle fever.ACCE_
ERATION TEST -
• Move throttle control lever from slow to
fast position. If engine hesitates or die_
turn idle mixture valve out (counter°
clocicwise) 1/8 turn. Repeat test and
continue to adjust, if necessary, until
engine accelerates smoothly.
High speed stop is factory adjusted. Do
not adjust--damage
may result.
_MPORTANT: Never tamper with the
engine governor, which is factory set for
proper engine speed, overspeeding
the
engine above the factory high speed set-
ting can be dangerous, if you think the
engine-governed high speed needs
adjusting, contact your nearest authorize,
service center, which has proper equip-
ment to make any necessary adjustment:
Idle Speed
Throttle
Screw
Lever
ldle/Mixture_
_ if
ValveWith
Limiter
26
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