Yamaha F400A 2022 - Selecting the Propeller Shaft Shim (T4)

8-45
Shimming (regular rotation model)
6. Install:
• Oil seal housing
•Cover
See step 3 in “Installing the propeller shaft
housing assembly” (8-25).
• Shift rod
•Dowel
•Gasket
•Plate
• Shift rod guide plate
• Spacer
• Lower water pump housing
• Lower impeller
• Outer plate cartridge
• Upper impeller
• Upper water pump housing
See “Installing the water pump and shift
rod (regular rotation model)” (8-15).
Selecting the propeller shaft shim (T4)
1. Install:
• Propeller shaft assembly
• Reverse gear assembly
•Washer
• Original propeller shaft shim (T4)
• Tapered roller bearing
• Specified reverse gear shim (T2)
•O-ring
• Propeller shaft housing assembly
• Claw washer (do not bend the tabs)
• Ring nut
See “Installing the propeller shaft housing
assembly” (8-25).
2. Install:
• Shift rod
• Shift rod guide plate (temporarily)
See step 1 in “Installing the water pump
and shift rod (regular rotation model)”
(8-15).
TIP:
• If the original shims (T4) are missing, install
new shims with a combined thickness of
1.20 mm.
• Do not reuse shims (T4) if deformed or
scratched.
• Check that there is no free play in the propel-
ler shaft.
3. Measure:
• Propeller shaft motive torque
a. Set the gear shift to the N position.
b. Turn the propeller shaft 5 turns or
more.
c. Install the washer “1” and propeller nut
“2”.
d. Measure the motive torque of the pro-
peller shaft.
4. Select:
• Propeller shaft shim (T4)
New
New
Shift rod socket “1”
90890-06950
Motive torque
0.4-1.0 N·m (0.04-0.10 kgf·m,
0.3-0.7 lb·ft) (F400ASTU,
F400ASTX, F450AVTU,
F450AVTX)
R
N
F
1
2
1