Selecting The Propeller Shaft Shim (T4); Lower Unit - Yamaha F225F Service Manual

LOWR
Selecting the propeller shaft shim
(T4)
1. Install the original propeller shaft shims,
propeller shaft assembly, and propeller
shaft housing assembly. See steps 1–6 in
"Installing the propeller shaft housing
assembly" (8-29).
TIP:
• If the original shims are missing, install new
shims with a combined thickness of
2.00 mm.
• Do not reuse a shim if deformed or
scratched.
• Check that there is no free play in the pro-
peller shaft
2. Set the gear shift to the N position.
R
N
F
Shift rod socket a: 90890-06679
3. Turn the propeller shaft 5 turns or more.
4. Install the washer b and propeller nut c.
c
b
5. Measure the motive torque of the
propeller shaft.
8-61

Lower unit

a
Propeller shaft motive torque:
0.44–1.32 N·m (0.04–0.13 kgf·m,
0.32–0.97 ft·lb)
Available shim thicknesses:
0.7, 0.8, 0.9, 1.0, 1.1, 1.2 mm
TIP:
• Shimming is not required if the measure-
ment value is within specification.
• If the measurement value is below specifi-
cation, adjust the motive torque to specifi-
cation by increasing the propeller shaft
shim thickness by 0.10 mm.
• If the measurement value is above specifi-
cation, adjust the motive torque to specifi-
cation by decreasing the propeller shaft
shim thickness by 0.10 mm.
• Use up to 3 shims to obtain the required
shim thickness.