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TO ADJUST CARBURETOR
NOTE: The carburetor on this engine is
low emission, it is equipped with an idle
fuel adjusting needle 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.
The carburetor has been preset at the fac-
tory and adjustment should not be neces-
san/. However, minor adjustment may be
required to compensate for differences in
fuel, temperature, altitude or toad. 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
(counterclockwise) increases the supply of
fuet 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 -
o 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 -
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 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, turn idle mixture valve
full travel clockwise then counterclock-
wise until engine runs rough. Turn valve
to a point midway between those two
positions. Release throttle lever'.ACCEL-
ERATION TEST-
• Move throttle control lever from stow to
fast position. If engine hesitates or dies,
turn idle mixture valve out (counter-
clockwise) 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.
IMPORTANT: 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 authorized
service center, which has proper equip-
ment to make any necessary adjustments.
Idle Speed Throttle
Screw Lever
',J' vr
Limiter
26
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