2C-7ELECTRICAL AND IGNITION90-13645--2 1095
CARBURETOR SYNCHRONIZATION
1. Remove sound box cover.
2. Loosen cam follower adjustment screw.
3. Loosen 6 synchronizing screws.
4. Look into throats of carburetors and make sure all
throttle shutters are completely closed.
5. Apply light down pressure on carburetor synchro-
nizing shaft and tighten 6 synchronizing screws
from top to bottom.
6. Recheck throttle shutters and make any neces-
sary adjustment.
7. Hold throttle arm so that the throttle stop screw is
against stop.
8. Place roller of cam follower against throttle cam
and adjust throttle stop screw to align raised mark
of throttle cam with center of cam follower roller.
Tighten locknut.
25498
a
b
c
d
e
f
g
b
b
a - Cam Follower Adjustment
Screw
b - Synchronizing Screws
c - Throttle Arm
d - Idle Stop Screw
e - Roller
f - Throttle Cam
g - Locknut
9. Holding throttle arm at idle position, adjust cam
follower so that a clearance of 0.005 in. - 0.020 in.
(0.127mm - 0.508mm) exists between roller and
throttle cam. Tighten screw securing cam follow-
er.
52483
a
b
c
a - Roller
b - Throttle Cam
c - Screw
10. Hold throttle arm against full throttle stop. Adjust
full throttle stop screw to allow throttle shutters to
open fully. To prevent throttle shutters to act as a
stop, screw in stop screw clockwise 1/2 turn and
tighten locknut.
23004
a
b
a - Throttle Arm
b - Full Throttle Stop Screw
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