Mercury 150 EFI Service Manual page 150

Adjustments
IMPORTANT: All throttle linkage adjustments have been set at factory and appro-
priately secured to prevent unnececessary readjustment. These factory settings
enable this engine to meet federally mandated emission standards and should not
be tampered with. However, should certain components fail, it may be necessary
to reset throttle linkage to approximate factory settings.
Throttle Cam Adjustment
1. Loosen cam follower screw (a), using Snap-On Tool TTXR25E, allowing cam follower
to move freely.
2. Allow roller (b) to rest on throttle cam (c). Adjust idle stop screw (d) on throttle arm (e)
to align curved radius on throttle cam (c) with center of roller (b). Tighten jam nut (f).
3. While holding throttle arm against idle stop, move cam follower arm until a 0.005 in.
to 0.020 in. (0.13 mm to 0.51 mm) clearance exists between roller and throttle cam.
Tighten cam follower screw (a).
a -
b -
c -
d -
90-883728 JULY 2001
a
b
c
Cam Follower Screw
Roller
Throttle Cam
Idle Stop Screw
TIMING, SYNCHRONIZING & ADJUSTING
e
f
d
e - Throttle Arm
f - Jam Nut
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