5B-8 - MERCARB 2 BARREL CARBURETOR 90-823225--1 1096
Choke Inspection
The choke does not require any periodic mainte-
nance; however, if a choke malfunction is suspected,
the following should be done:
1. With engine turned OFF, remove flame arrestor.
2. Open and close choke several times, and check
for binding, loose or disconnected linkages, or
other signs of damage.
3. If choke or linkage binds, sticks, or works slug-
gishly, clean with carburetor choke cleaner. Fol-
low directions on can.
IMPORTANT: Choke valve and shaft and lever as-
sembly is not serviceable. If valve and/or shaft
and lever assembly is worn or damaged, air horn
assembly must be replaced.
Adjustments
NOTICE
Refer to “Precautions,” in this section,
BEFORE proceeding.
Pump Rod
1. Back out idle speed screw until it no longer con-
tacts idle cam.
72284
b
a
a - Idle Speed Screw
b - Idle Cam
2. With throttle valves completely closed, measure
from flame arrestor mounting surface to top of
pump rod.
72682
a
a - See Specifications
3. Carefully bend pump rod (where shown) to obtain
specified dimension.
72683
b
a
a - Pump Rod
b - Bend Here
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