TOHATSU BFT115A Service Manual page 540

GEAR CASE (STANDARD ROTATION)
Obtain the forward bevel gear backlash using the dial
indicator runout and the following formula.
Formula:
Backlash = Dial gauge runout ÷ 0.86
Example:
When dial gauge runout is 0.175 mm (0.0069 in),
Backlash =
0.175 mm (0.0069 in) ÷ 0.86 = 0.20 mm (0.008 in)
STANDARD VALUE:
0.10 – 0.30 mm (0.004 – 0.012 in)
If the backlash is too large compared to the standard
value, increase the forward bevel gear shim thickness
and recheck the backlash.
If the backlash is too small compared to the standard
value, reduce the forward bevel gear shim thickness
and recheck the backlash.
• Be sure to use the special tool when removing the
bearings in order to readjust the backlash.
Install the water pump (page 11-10).
After installing the water pump, perform the gear case
pressure inspection (page 16-47).
16-46