Filter
Top Products
MAINTENANCE
2.10
CARBURETOR PILOT SCREW
ADJUSTMENT
Pilot Screw
FRONT
(Engine)
Ill.2
NOTE: Pilot screw is covered by a welsh plug. Plug
removal will be required to perform these procedures.
1. Start engine and warm it up to operating
temperature (about 10 minutes).
2. Turn pilot screw in (clockwise) until lightly seated.
Turn screw out the specified number of turns.
NOTE: Do not tighten the pilot screw forcefully
against the seat or the screw and/or seat will be
permanently damaged. (Ill. 2)
Pilot Screw Adjustment
Refer to Specifications in Chapter 1
3. Connect an accurate tachometer that will read in
increments of + or -- 50 RPM such as the PET
2100DX (PN 8712100DX)orthePET2500(PN
8712500).
4. Set idle speed to 1600 RPM. Always check
throttle cable freeplay after adjusting idle speed
and adjust if necessary.
5. Slowly turn mixture screw clockwise using the
pilot screw wrench until engine begins to miss.
6. Slowly turn mixture screw counterclockwise until
idle speed increases to maximum RPM.
Continue turning counterclockwise until idle RPM
begins to drop.
7. Center the pilot screw between the points in Step
5 and 6.
8. Re adjust idle speed to specification.
IDLE SPEED ADJUSTMENT
Idle Screw
BSR Carburetor
Ill.3
1. Start engine and warm it up thoroughly.
2. Adjust idle speed by turning the idle adjustment
screw in (clockwise) to increase or out
(counterclockwise) to decrease RPM. (Ill.3)
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.
Idle Speed:
1600 +/-- 50 RPM
THROTTLE CABLE /
ELECTRONIC
THROTTLE
CONTROL (ETC
SWITCH)
ADJUSTMENT
1. Slide boot off throttle cable adjuster and jam nut.
2. Place shift selector in neutral and set parking
brake.
3. Start engine and set idle to 1600 RPM.
Boot
Adjuster
Sleeve
Lock-
nut
Boot
Ill. 1
Enfocus Software - Customer Support