Yamaha Z300A Supplementary Service Manual page 56

LOWR
10. Slowly turn the drive shaft clockwise and
counterclockwise and measure the back-
lash when the drive shaft stops in each
direction.
Reverse gear backlash:
0.61–0.90 mm (0.0240–0.0354 in)
11. Add or remove shim(s) if out of specifica-
tion.
Reverse gear
backlash
Less than
0.61 mm (0.0240 in)
More than
0.90 mm (0.0354 in)
M: Measurement
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and
0.50 mm
12. Remove the special service tools, and
then install the water pump assembly.
49
Lower unit
Shim thickness
To be decreased by
(0.76 – M) × 0.81
To be increased by
(M – 0.76) × 0.81
6D03F1X