Backlash (Regular Rotation Model); Measuring The Forward And Reverse Gear Backlash - Yamaha F200C Service Manual

Shimming (regular rotation model) / Backlash (regular rotation model)
Backlash
(regular rotation model)
Measuring the forward and reverse
gear backlash
1. Remove the water pump assembly.
2. Set the gearshift to the neutral position.
È
Shift rod push arm: YB-06052
3. Install the special service tool so that it
pushes against the propeller shaft.
È
NOTE:
Tighten the universal puller or center bolt
while turning the drive shaft until the drive
shaft can no longer be turned.
Bearing housing puller 1: YB-06207
Universal puller 2: YB-06117
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.
5. Set the lower unit upside down.
69J1D11
È
6
NOTE:
Install the dial gauge so that the plunger a
contacts the mark b on the backlash indica-
tor.
Backlash indicator gauge 3:
YB-06265
Magnetic plate 4: YB-07003
Dial gauge 5: YU-03097
Magnet flexible stand 6: YU-34481
6. Slowly turn the drive shaft clockwise and
counterclockwise and measure the back-
lash when the drive shaft stops in each
direction.
Forward gear backlash:
0.21–0.44 mm (0.008–0.017 in)
7. Add or remove shim(s) if out of specifica-
tion.
Forward gear
backlash
Less than
0.21 mm (0.008 in)
More than
0.44 mm (0.017 in)
M: Measurement
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and
0.50 mm
Shim thickness
To be decreased by
(0.33 – M) × 0.71
To be increased by
(M – 0.33) × 0.71
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