MERCARB 2 BARREL CARBURETOR - 5B-1190-823225--1 1096
Repair
NOTICE
Refer to “Precautions,” in this section,
BEFORE proceeding.
Removal
IMPORTANT: Carburetor malfunctions are, in
many cases, caused by the presence of dirt, wa-
ter or other foreign matter in carburetor. To aid in
diagnosis, carefully remove carburetor from en-
gine without draining fuel from bowl. Contents of
fuel bowl may then be inspected for contamina-
tion as carburetor is disassembled.
1. Remove ventilation hose from flame arrestor,
then remove flame arrestor.
IMPORTANT: Place a clean cloth in bores of car-
buretor to prevent dirt and foreign material from
falling into bores.
2. Turn fuel supply off at fuel tank.
3. Disconnect throttle cable from carburetor.
4. Remove fuel line from fuel inlet nut, using wrench
to stabilize fuel inlet nut.
5. Remove fuel pump sight tube from carburetor.
6. Disconnect electric choke.
7. Remove carburetor attaching nuts and washers
and remove carburetor.
IMPORTANT: Place a clean cloth over intake man-
ifold opening to prevent dirt or foreign material
from entering manifold.
8. Remove and discard gaskets.
Installation
1. Thoroughly clean gasket surfaces.
2. Place new carburetor base gasket on intake
manifold. Install carburetor and secure with nuts
and washers. Torque to 132 lb. in. (15 N·m).
3. If fuel inlet filter nut was disturbed, remove; clean
all threads with brush and carburetor cleaner or
Quicksilver Leveler.
4. Connect fuel line to fuel inlet filter nut, and while
stabilizing filter nut with wrench, tighten fuel line
fitting securely.
5. Connect fuel pump sight tube to fitting on carbu-
retor.
6. Connect electric choke wires to choke cover.
7. Install throttle cable as explained in Section 2.
8. Install flame arrestor and crankcase ventilation
hose.
9. Reconnect battery cables to battery.
10. Ensure that water is supplied to cooling system.
Start engine and check for gasoline leaks. If leaks
exist, STOP ENGINE IMMEDIATELY and re-
check connections.
11. Adjust idle speed and idle mixture, as outlined
under “Adjustments” as previously outlined.
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