Checking The Drive Shaft; Checking The Lower Case; Assembling The Lower Case - Yamaha F4B Service Manual

Checking the drive shaft

1. Check the drive shaft. Replace if dam-
aged or worn.
2. Measure the drive shaft runout.
Drive shaft runout: 0.4 mm (0.02 in)

Checking the lower case

1. Check the lower case. Replace if cracked
or damaged.

Assembling the lower case

Do not reuse a bearing, bushing, or oil
seal, always replace it with a new one.
1. Install a new bushing a.
b
a
b
a
Bushing installer center bolt b:
90890-06601
2. Install a new bushing c.
Drive shaft and lower case
d
c
Driver rod L3 d: 90890-06652
Bushing attachment e: 90890-06649
3. Install new oil seals f to the specified
depth a.
d
g
Driver rod L3 d: 90890-06652
Needle bearing attachment g:
90890-06615
Depth a: 1.0 mm (0.04 in)
4. Install the ball bearing h.
i
j
h
Driver rod LS i: 90890-06606
Bearing outer race attachment j:
90890-06628
e
a
f
b
8-12
0
1
2
3
4
5
6
7
8
9
10
A