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Maintenance
4st 25/30 2022
4. If the specified pressure cannot be maintained, check
the oil seals of the drive shaft and propeller shaft and the
O-ring of the shift shaft for any damage.
3. Apply the specified pressure to the gear case, and check if
the pressure can be held for 10 seconds.
Do not subject the gear case to a pressure
over the specified value.
Doing so can cause damage to the oil seal.
Specified Gear Case Holding Pressure:
0.05 MPa (7 psi) [0.5 kgf/cm
2
]
10)
Inspection of Gear Case (for leakage)
1. Drain the gear oil.
2.
Remove the upper oil plug
1
and connect a commercially
available leakage tester to the hole.
•
When the propeller shaft is rotated while
maintaining the pressure, it is easier to locate
air leaks due to the oil seal lip being worn out.
•
Depressurize the gear case and cover the
oil plug area with a piece of rag before
disconnecting the leakage tester.
11) Inspection of Timing Belt
1. Remove the
starter lock cable 1 and recoil starter 2 (3
bolts).
2. Disconnect the
vent hose 3 and remove the belt cover 4.
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