TOHATSU BFT 250A, Service Manual

Page: 495 / 639

16-41
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GEAR CASE (STANDARD ROTATION)
THRUST SHIM
Remove the trim tab from the gear case (page 16-8).
Cross reference the engagement mark [1] located on
the trim tab installation part of the gear case [2] and
refer to the shim selection table to determine the
required thickness of the shim (St).
Shim selection table Unit: mm
Select the shims from the thrust shims of different
thickness, and install the shim.
Install the trim tab on the gear case (page 16-9).
After shim selection, inspect the propeller shaft thrust
clearance (page 16-44).
BACKLASH INSPECTION
FORWARD BEVEL GEAR BACKLASH
Backlash adjustment must be made after adjustment of
each gear shim (page 16-35).
Install the following parts except the water pump.
– Vertical shaft/forward bevel gear (page 16-28)
– Propeller shaft holder (page 16-18)
– Shift rod (page 16-16)
Check that the shift rod [1] in the gear case is in the "N"
(Neutral) position.
• The shift rod is in the "N" (Neutral) position if the
cutout [2] in the shift rod spline is in the cruising
direction [3].
Hold the propeller shaft securely with the 2 jaw puller
(commercially available) [1] as shown, and tighten the
puller to the specified torque.
Thickness Trust shim name
Gear case en
gage
me
nt
mark
A 2.85 Trust shim C
B 2.90 Trust shim D
C 2.95 Trust shim E
D 3.00 Trust shim F
E 3.05 Trust shim G
F 3.10 Trust shim H
[1]
[2]
[2]
[1]
[3]
TOOLS (commercially available):
Puller, 2 jaw
Pins (2 required) CJ-105-11
Pressure screw CJ-105-3
Jaws CJ-105-6
Tip CJ-66-15-3
Yoke CJ-86-1
TORQUE: 5 N·m (0.51 kgf·m, 3.7 lbf·ft)
[1]
[2]