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TOADJUST CARBURETOR
NOTE:The carburetoron this engine is
low emission. It is equippedwith an idle
fuel adjustingneedlewith a limitercap,
which allows someadjustmentwithin the
limitsallowed by the cap. Do not attempt
to remove the limiter cap. The limiter cap
cannot he 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 valve in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Turning the idle mixture valve out
(countemlockwise) increases the supply of
fuel to the engine giving a richer fuel/air
mixture.
IMPORTANT: Damage to the needle valve
and the seat incarburetor may result if
screw is tumed in too tight.
PRELIMINARY SETTING -
• Air cleaner assembly must be assem-
bled to the carburetor when making car-
buretor adjustments.
• Be sure the throttle control cable is
adjusted properly (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 1750 RPM.
• While still holding throttle lever against
idle speed screw, tum idle mixture valve
full travel clockwise then countemlock-
wise until engine runs roO_il: T_aive
to a point midway between those two
positions. Release throttle lever.
ACCELERATION TEST -
• Move throttle control lever from slow to
fast position. If engine hesitates or dies,
turn idle mixture valve out (counter-
clockwise) 1/8 tum. 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 govemor, 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 authorized
service center, which has proper equip
ment to make any necessary adjustments.
Idle Speed Throttle
Screw Lever
Idle Mixture
Valve With
Limiter
26