Forward Gear - Mercury 40 Service Manual

Forward Gear

1. Inspect forward gear teeth for rust, chipping, ex-
cessive wear (teeth are sharped edged), or bro-
ken teeth.
2. Inspect forward gear clutch jaws for wear.
Rounded jaws indicate the following:
a. Improper shift cable adjustment.
b. Engine idle speed too high.
c. Shifting too slowly.
3. Inspect propeller shaft forward gear bearing sur-
face to determine condition of forward gear
needle bearing. If bearing surface is discolored
(from lack of lubricant), pitted or worn, propeller
shaft and bearing should be replaced.
a - Bearing Surface
b - Bearing
6A-16 - LOWER UNIT
52874
52874
a
b
52846
4. Use a suitable mandrel to press needle bearing
out of forward gear.
a
a - Mandrel (14 mm Socket)
b - Bearing
5. Use Driver 91-826872 to press new needle bear-
ing into forward gear. Press on numbered side of
bearing.
87
Super Duty Gear Lubricant (92-850737A1)
87
a - Driver (91-826872)
b - Bearing
b
52873
a
b
52847
90-852572R1 JANUARY 1998