90-826148R2 MARCH 1997 FUEL SYSTEM - 3B-9
Carburetor Adjustments
Initial Starting Adjustment
Turn idle mixture screw adjustment “in” (clockwise)
until it seats lightly then, back off 1-1/2 turns.
Idle Speed Adjustment
1. Adjust engine idle RPM as outlined in Section 2C
“Timing/Synchronizing/Adjusting.”
Idle Mixture Screw Adjustment
1. Start engine and allow to warm-up. Throttle back
engine to idle for about one minute.
2. With engine running at idle speed in “Forward”
gear --turn idle mixture screw IN (clockwise) until
engine starts to “bog” down and misfire. Back out
1/4 turn or more.
52280
a - Idle Mixture Screw
3. Check for too lean mixture on acceleration.
4. DO NOT adjust leaner than necessary to attain
reasonably smooth idling. When in doubt, stay on
the slightly rich side of the adjustment.
Carburetor Float Adjustment
1. Remove carburetor as outlined in “Carburetor
Removal,” following.
2. Remove fuel bowl and gasket and check float lev-
el using a carburetor scale.
9/16 in.
(14.29 mm)
With Gasket
Removed
52372
a
b
a - Metal Tab
b - Inlet Needle
3. Attach Spring Clip on Inlet Needle to metal float
tab and place needle into its seat.
55883
b
a
a - Metal Float Tab
b - Spring Clip
4. If necessary, adjust float level by bending metal
tab (on float) to which inlet needle is clipped.
Bend Tab Here for
Float Level Adjustmen
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