Repair; Removal - MerCruiser 305 CID (5.0L) Service Manual

SERVICE MANUAL NUMBER 24

Repair

Refer to "Precautions" in this section, BEFORE proceeding.

Removal

IMPORTANT: Carburetor problems are, in many cases, caused by the presence of
dirt, water or other foreign matter in carburetor. To aid in diagnosis, carefully remove
carburetor from engine without draining fuel from bowl. Contents of fuel bowl may
then be inspected for contamination as carburetor is disassembled.
1. Remove battery cables.
2. Remove crankcase ventilation and PCV hose from flame arrestor.
3. Remove flame arrestor.
IMPORTANT: Place a clean cloth in bores of carburetor to prevent dirt and foreign
material from falling into bores.
4. Turn fuel supply off at fuel tank.
5. Disconnect throttle cable from carburetor.
6. Remove fuel line from fuel inlet nut, using wrench to stabilize fuel inlet nut.
7. Disconnect electric choke.
8. Remove carburetor attaching nuts and washers and remove carburetor.
IMPORTANT: Place a clean cloth over intake manifold opening to prevent dirt or for-
eign material from entering manifold.
9. Remove and discard gaskets.
Index
90-861327--1 OCTOBER 1999
MERCARB 2 BARREL CARBURETOR
NOTICE
Page 5B-17