TOHATSU BFT 250A, Service Manual

Page: 499 / 639

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GEAR CASE (STANDARD ROTATION)
GEAR CASE PRESSURE INSPECTION
• Perform the gear case pressure check and check for
pressure leakage after disassembling and
reassembling the gear case.
• In principle, the pressure check should be made on
the gear case before filling it with gear oil and before
installing it on the outboard motor. However, the
check can be made with the gear case filled with
gear oil.
Remove the oil check bolt [1] and the O-ring [2].
Install the adapter (STV-3334Y: commercially available)
[3] in the oil check bolt hole.
Attach the hose end of the pressure tester (STV-V34:
commercially available) [4] to the adapter.
Do not screw in the adapter and the hose end with
force.
While watching pressure tester gauge [1], apply the
specified air pressure to the gear case by pumping the
handle slowly.
Do not apply excessive air pressure.
While applying the specified air pressure to the gear
case, move the shift rod [1] right and left five or six
times using pliers.
Wrap a shop towel [2] around the shift rod spline to
move the shift rod with pliers.
[4]
[3]
[1]
[2]
AIR PRESSURE:
29 kPa (0.3 kgf/cm
2
, 4.3 psi)
[1]
[2]
[1]