TOHATSU BFT75A - Oil Pressure Check; Oil Pump Inspection

12-10
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LUBRICATION SYSTEM
OIL PRESSURE CHECK
Remove the oil filter (page 3-5).
Check the condition of the O-ring [1] of the special tool
and install it to the oil filter flange [2].
Tighten the special tool to the specified torque.
Install and tighten the adapter to the specified torque.
Install the pressure gauge [5] to the oil pressure gauge
adapter.
Install the oil filter (page 3-5).
Check the engine oil level (page 3-4).
Remove the propeller (page 16-3).
Run the outboard in a test tank.
Allow the engine to warm up to normal operating
temperature, and then measure the oil pressure.
If the oil pressure is lower than the specified value,
inspect the oil pump rotor and body for wear (page 12-
10).
Remove the special tools.
Install the oil filter (page 3-5).
OIL PUMP INSPECTION
OIL PUMP BODY I.D.
Measure the oil pump body I.D.
If the measurement exceeds the standard limit, replace
the oil pump body.
TOOL:
Oil pressure gauge
attachment [3]
070MJ-0010101
TORQUE: 12 N·m (1.2 kgf·m, 9 lbf·ft)
TOOL:
OIL PRESSURE GAUGE
ADAPTER, SUNAT 77AH [4]
Commercially
available
TORQUE: 8.3 N·m (0.85 kgf·m, 6.1 lbf·ft)
TOOL:
OIL PRESSURE GAUGE
SUNMT37A
Commercially
available
OIL PRESSURE (Pressure check at 750 ± 50 min
-1
(rpm) in neutral:)
117 kPa (1.2 kgf/cm
2
, 17 psi) or higher
[5]
[4]
[2]
[1]
[3]
STANDARD:
80.00 – 80.04 mm (3.150 – 3.151 in)