TIMING, SYNCHRONIZING & ADJUSTING
90-855347R1 JANUARY 1999 Page 2C-5
Throttle Cam Adjustment
NOTE: Low pressure electric fuel pump is removed for viewing purpose.
1. Loosen roller arm screw allowing roller to move freely.
2. Allow roller to rest on throttle cam. Adjust idle stop screw on throttle arm to align cam
roller in the pocket of the throttle cam.
3. Tighten roller arm screw to provide clearance of 0.005 in. ± 0.005 in. (0.127 mm ±
0.127 mm) between roller and cam.
–
d
a
e
56061
a
b
c
d
e
a-Roller Arm Screw
b-Roller
c-Throttle Cam
d-Wide Open Throttle Stop Screw
e-Idle Stop Screw
Maximum Throttle
1. Hold throttle arm against full throttle stop.
2. Adjust full throttle stop screw (located behind electric fuel pump) to allow full throttle
valve opening while maintaining a 0.020 in. (0.508 mm) clearance between arm of
throttle shaft and stop on attenuator box.
3. Tighten jam nut on full throttle stop screw.
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