MAINTENANCE
2.14
PILOT SCREW ADJUSTMENT
Pilot Screw (Idle Mixture) Adjustment Notes
Donot tightenthepilot screwforcefully against the seat or the screw and/ orseat willbeper manent lydam aged.
Start engine and warm it up to operating temperature (about 10 minutes). This is a very important step.
1. T urn pilot screw in (clockwise) until lightly seated.
T urn screw out the specified number of turns.
2. Connect an accurate tachometer that will read in
increments of + or -- 50 RPM such as the PET
2100DX (P/N 8712100DX) or the PET 2500 (P/N
8712500).
3. Set idle speed to 1200 RPM. Always check throttle
cable freeplay after adjusting idle speed and adjust if
necessary.
4. Slowly turn mixture screw clockwise using the pilot
screw wrench until RPM begins to decrease by 50
RPM or greater.
5. Slowly turn mixture screw counterclockwise until idle
speedincreasestomaximumRPM. Continueturning
counterclockwise until idle RPM begins to drop.
6. Center the pilot screw between the points in step 5
and 6.
7. Re adjust idle speed if not within specification.
IDLE SPEED ADJUSTMENT
1. Start engine and warm it up thoroughly.
2. Adjustidlespeedbyturningtheidleadjustmentscrew
in(clockwise)toincrease orout(counterclockwise)to
decrease RPM. (Refer to Ill. at right).
NOTE: Adjusting the idle speed affects throttle cable
freeplay and electronic throttle control (ETC) adjustment.
Always check throttle cable freeplay after adjusting idle
speed and adjust if necessary.
Pilot Screw Adjustment:
2.0 Turns
Idle Speed:
1200 +/-- 200 RPM
Pilot Screw
FRONT
(Engine)
Idle Screw
CV Carburetor
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