Checking The Lower Unit (For Air Leakage) - Yamaha 200A Service Manual

4. Insert the gear oil tube or gear oil pump
into the drain hole and slowly fill the gear
oil until oil flows out of the check hole and
no air bubbles are visible.
Recommended gear oil:
Hypoid gear oil
SAE: 90
Oil quantity:
Regular rotation model:
980 cm 3 (34.5 Imp qt)
Counter rotation model:
870 cm 3 (30.6 Imp qt)
5. Install the check screw 2 and quickly in-
stall the drain screw 1.
60H5E11
Checking the lower unit (for air leak-
age)
1. Remove the check screw 1, and install the
leakage tester.
Leakage tester : 90890-06840
2. Apply the specified pressure to the lower
unit, to check whether the pressure is re-
tained for 10 seconds.
Do not over-pressurize the lower unit, oth-
erwise the oil seals may be damaged.
60H30470
NOTE:
Cover the check hole with a rag while remov-
ing the leakage tester from the lower unit.
Lower unit holding pressure:
3. If pressure drops below specification, check
the drive shaft and propeller shaft oil seals
for damage.
Lower unit / General
2
100 kPa (1.0 kgf/cm , 14 psi)
3
60H30480
3-20