Mercury 75 Service Manual page 111

CARBURETOR SYNCHRONIZATION
1. Disconnect remote fuel line from engine.
2. Connect remote control electrical harness to en-
gine wiring harness.
3. Remove throttle cable barrel from barrel retainer.
4. Remove sound air box cover to verify throttle
shutters are closed.
5. Loosen screw (1) from throttle cam follower.
6. Loosen 2 synchronizing screws (2).
a - Cam Follower Adjustment Screw
b - Synchronizing Screws
7. Hold throttle arm so that idle stop screw is against
stop.
8. Place roller of cam follower against throttle cam
and adjust idle stop screw to align raised mark of
throttle cam with center of cam follower roller.
Tighten locknut.
2C-2 - ELECTRICAL
a - Throttle Arm
b - Idle Stop Screw
c - Roller
d - Throttle Cam
e - Raised Mark
f - Lock Nut
9. Holding throttle arm at idle position, adjust cam
follower, so that a clearance of 0.005 in. - 0.020
in. (0.13 - 0.51 mm) exists between roller of cam
follower and throttle cam. Tighten set screw se-
curing cam follower.
0.005–0.020
(0.13–0.51mm)
a
c
a - Roller
b - Throttle Cam
c - Cam Follower Adjustment Screw
90-830234R3 DECEMBER 1997
b
54169