Yamaha F225F Service Manual page 424

LOWR
9. Calculate the new pinion shim (T3)
thickness.
Calculation formula:
New pinion shim (T3) thickness = Current
pinion shim thickness + Shim thickness
adjustment
Example:
Use the following formula when the shim
thickness adjustment value is positive.
Current pinion shim thickness = 0.70 mm
Shim thickness adjustment = 0.18 mm
New pinion shim (T3) thickness
= 0.70 mm + 0.18 mm
= 0.88 mm
Use the following formula when the shim
thickness adjustment value is negative.
Current pinion shim thickness = 0.70 mm
Shim thickness adjustment = –0.09 mm
New pinion shim (T3) thickness
= 0.70 mm + (–0.09) mm
= 0.61 mm
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40,
0.50 mm
TIP:
• Use up to 3 shims to obtain the required
shim thickness.
• If the calculated shim thickness cannot be
obtained with a combination of the available
shims, increase or decrease the pinion dis-
tance measurement by 0.01 mm.
10. Remove the special service tool, and
then install the determined shims.
8-45
Lower unit