8-18 LOWER UNIT
LEAKAGE CHECK
Check for leakage of oil seal and O-ring when applying specified
pressure inside of the gearcase.
09950-69512 : Oil leakage tester
09952-99310 : Hand air pump
Procedure
1. Install the oil leakage tester into oil level hole.
2. Connect a hand air pump to the oil leakage tester.
3. While rotate the driveshaft and propeller shaft clockwise sev-
eral times, apply specified pressure for leakage test.
NOTE:
Apply low initial pressure of 20 – 40 kPa, (0.2 – 0.4 kg/cm
2
, 2.8 –
5.7 psi) first, then apply specified pressure.
Leakage test pressure: 100 kPa (1.0 kg/cm
2
, 14.2 psi)
4. Once stabilized, pressure should remain steady for at least
5min.
If pressure does not fall, sealing performance is correct.
PROPELLER INSTALLATION
1. Install the propeller stopper 1 onto the propeller shaft, then
slide on the propeller 2.
2. Install the spacer 3, washer 4 and nut 5, then tighten nut
to specified torque.
Propeller nut: 18 N·m (1.8 kg-m, 13.0 lb-ft)
3. Push cotter pin 6 through nut and shaft, then bend to
secure.
LOWER UNIT INSTALLATION
1. Install the gasket 1 and two dowel pins 2.
Do not exceed pressure of 110 kPa (1.1kg/cm
2
,
15.6 psi) or damage to oil seals will result.
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