Measuring The Forward Gear Backlash And Reverse Gear Backlash Before Disassembly - Yamaha F30B 2018 Service Manual

Measuring the forward gear backlash
and reverse gear backlash before dis-
assembly
1. Install:
• Lower unit (onto a repair stand)
2. Remove:
• Water pump assembly
• Outer plate cartridge
See "Water pump" (8-3).
3. Measure:
• Forward gear backlash
• Reverse gear backlash
Out of specification  See "Selecting the
pinion shim (T3)" (8-32).
Forward gear backlash
0.18–0.65 mm (0.0071–0.0256
in)
Reverse gear backlash
0.75–1.22 mm (0.0295–0.0480
in)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Set the gear shift to the N position.
R
N
F
Shift rod socket "1"
90890-06681
Shift rod socket "1"
YB-06681
1
b. Set up the special service tools "1", "2",
and "3", and then tighten the center bolt "3"
temporarily.
A
1
B
1
A. Worldwide
B. USA and Canada
Bearing housing puller claw L "1"
90890-06502
Bearing housing puller "1"
YB-06207
Stopper guide plate "2"
90890-06501
Universal Puller "2"
YB-06117
Center bolt "3"
90890-06504
c. Turn the lower unit so that the propeller
shaft is pointing down.
d. Turn the drive shaft 10 turns or more to
seat the tapered roller bearing.
8-27
Shimming
2
1
3
2
1
3