PERIODIC MAINTENANCE 2-23
TEST PROCEDURE
1. Check the engine oil level.
2. Remove the starboard side cover.
3. Remove the plug for oil pressure service port A.
4. Install the pressure gauge and the adapter into the port A.
! 09915-77310 : Oil pressure gauge
09915-78211 : Oil pressure gauge adapter
NOTE:
Prior to installation of the plug or adapter, wrap their threads with
sealing tape. If the sealing tape edge is bulged out from threads,
cut off the excess.
5. Attach the engine tachometer to the spark plug high-tension
cord.
! 09900-26006: Engine tachometer
6. Warm up the engine as follows:
Summer : 5 min. at 2000 r/min
Winter : 10 min. at 2000 r/min
7. After warming up, shift into the forward gear and increase
the engine speed to 3000 r/min, then compare the pressure
indicated on the gauge to the specifications.
8. Reinstall parts removed earlier.
OIL PRESSURE
Oil pressure (at normal operating temp.):
420 – 490 kPa (4.2 – 4.9 kg/cm
2
, 60 – 70 psi.)
at 3000 r/min.
NOTE:
The figure shown above is guideline only, not absolute service
limit.
If the oil pressure is lower or higher than the specification, the
following causes may be considered:
Low oil pressure High oil pressure
• Clogged oil filter • Using an engine oil of too
• Leakage from oil passages high viscosity
• Defective oil pump • Clogged oil passage
• Defective oil pressure • Clogged oil pressure regula-
regulator tor
• Damage O-ring • Combination of above items
• Combination of above items
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