Mariner 100, Service Manual, Page: 67 / 391

2C-8 ELECTRICAL AND IGNITION 90-13645--2 1095
11. Hold throttle cam in full throttle position. If neces-
sary adjust acceleration pump adjusting bolts po-
sition so that a gap of 0.030 in. (0.762mm) exists
between throttle cam and top of acceleration
pump aluminum housing.
22509
a
b
c
d
a - Throttle Cam
b - Bolts
c - 0.030 in. (0.762mm) Gap
d - Accelerator Pump
CARBURETOR/OIL PUMP SYNCHRONIZATION
IMPORTANT: Some engines may have an addi-
tional stamped mark (d) which SHOULD NOT be
used.
1. While holding throttle arm at idle position, adjust
length of link rod so that stamped mark of oil pump
body aligns with stamped mark of oil pump lever.
2. Move throttle arm from idle to wide open throttle
while checking link rod for any interference with
hoses, cable ties, etc.
22977
a
b
c
d
a - Link Rod
b - Mark of Oil Pump Body c - Mark of Oil Pump Lever
d - Mark NOT Used
TIMING ADJUSTMENTS
Engine can be timed while cranking engine with
starter motor. To prevent engine from starting
when being cranked, all spark plugs should be
removed.
CAUTION
NOTE: If initial timing adjustments are made without
engine running, then final timing checks should be
made with engine running due timing advance char-
acteristics of ignition system. Minimum engine RPM
required to check maximum timing advance is 3000
RPM.
1. Insert Spark Gap Tool (91-63998A1) in no. 1 (top)
cylinder spark plug boot and attach alligator clip
to good ground.
2. Remove throttle cable barrel from barrel retainer.
IDLE TIMING ADJUSTMENT
WARNING
Before cranking engine, keep clear of propeller,
as it may rotate.
IMPORTANT: To accurately time engine at crank-
ing speed, a fully charged battery must be used.