Yamaha F150A Service Manual page 205

Shimming (counter rotation model) / Backlash (counter rotation model)
8. Measure the propeller shaft free play.
Repeat steps 1–7 if out of specification.
Propeller shaft free play:
0.25–0.35 mm (0.0098–0.0138 in)
Magnet base B 8: 90890-06844
Dial gauge set 9: 90890-01252
Backlash
(counter rotation model)
Measuring the forward and reverse
gear backlash
1. Remove the water pump assembly.
2. Set the gear shift to the neutral position
at the lower unit.
Shift rod push arm: 90890-06052
3. Install the special service tools so that it
pushes against the propeller shaft.
63P3F11
NOTE:
Tighten the center bolt while turning the drive
shaft until the drive shaft can no longer be
turned.
Bearing housing puller claw L 1:
90890-06502
Stopper guide plate 2: 90890-06501
Center bolt 3: 90890-06504
6
4. Install the backlash indicator onto the
drive shaft (22.4 mm [0.88 in] in diame-
ter), then the dial gauge onto the lower
unit.
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9
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