Checking The Bearings; Checking The Drive Shaft; Checking The Shift Rod; Checking The Lower Case - Yamaha F15B Service Manual

LOWR

Checking the bearings

1. Check the needle bearing and the thrust
bearing for run-out or roughness.
Replace if necessary.
cC
Shimming is required when the thrust
bearing is replaced.

Checking the drive shaft

1. Check the drive shaft for bends or wear.
Replace the shaft if necessary.
2. Measure the drive shaft run-out.
Run-out limit:
0.5 mm (0.0197 in)
6-17
Lower unit
6B460320
6B460330

Checking the shift rod

1. Check the shift rod for deformation or
wear. Replace if necessary.

Checking the lower case

1. Check the lower case for cracks or dam-
age. Replace if necessary.

Assembling the lower case

1. Install the shims and the taper roller bear-
ing outer race.
1
cC
Shimming is required when the forward
gear, the taper roller bearing, or the lower
case is replaced. Record the measured
height of the bearing.
Bearing outer race attachment 1:
90890-06625
Driver rod LL 2:
90890-06605
6B460080
2
G
6B460350
6D45F11