Throttle Cam Adjustment; Maximum Throttle - Mercury Optimax 115 Service Manual

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.
0.127 mm) between roller and cam.
a -
b -
c -
d -
e -

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.
90-855347R1 JANUARY 1999
a a
b
Roller Arm Screw
Roller
Throttle Cam
Wide Open Throttle Stop Screw
Idle Stop Screw
TIMING, SYNCHRONIZING & ADJUSTING
0.005 in. (0.127 mm
c
–
e
e
d
d
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