Yamaha F50D Servise Manual - page 220
Other manuals for F50D:
Owner's Manual
of
372
Lower unit
8-21
LOWR
Shimming (F50D)
Shimming workflow
Remove the water pump
assembly and oil seal
housing.
Measure the backlash before
disassembly.
Adjust the forward gear shim
thickness (T1) and reverse
gear shim thickness (T2).
Within specification?
Shimming is not required.
YES
NO
NO
YES
Disassemble the lower unit.
Select the pinion shims (T3).
Assemble the lower unit.
Measure the backlash.
Install the water pump
assembly and oil seal
housing.
Within specification?
TIP:
9
Shimming is not required if the backlash is within specification.
9
Shimming is required when assembling the original inner parts and a new lower case.
9
Shimming is required when replacing the pinion, forward gear, reverse gear, bearings, shaft, and
housing.