Mercury 40 Service Manual page 483

NON-BIGFOOT GEAR HOUSING
Shift Shaft
1. Inspect shift cam for wear or galling. Replace cam if necessary.
2. If cam is worn, inspect cam follower in end of propeller shaft for wear.
a -
b -
3. Inspect shift shaft boot for deterioration.
4. Inspect shift shaft carrier O-ring for cuts or abrasions. It is a good service procedure to
replace all O-rings, seals and gaskets regardless of appearance.
a -
b -
Page 6A-28
Cam Follower
Shift Cam
Boot
O-ring
b
a
52845
a
b
52828
90-828631R3 MARCH 1999