Yamaha F150A - Installing the Oil Pump Assembly; Installing the Balancer Assembly

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Cylinder block (F150A, FL150A)
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A
2. Install a new oil seal “1” into the oil pump
housing “2”.
3. Install the outer rotor “1”, the inner rotor
“2”, a new gasket “3”, and the oil pump
cover “4”, and then tighten the oil pump
cover screws “5” to the specified torque.
4. Install a new oil seal “6” so that it is facing
in the proper direction.
Installing the oil pump assembly
1. Fill the oil pump assembly with engine oil
through the oil passage.
2. Install new O-rings “1” and the oil pump
assembly “2” by aligning the oil pump
gear with the crankshaft.
Installing the balancer assembly
1. Align the keyway “a” in the crankshaft
with the cylinder block and crankcase
mating surfaces (STBD) “b”.
Driver rod L3 “3”: 90890-06652
Needle bearing attachment “4”:
90890-06611
General pipe “3”:
a = 45 mm (1.77 in)
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Oil pump cover screw “5”:
4 N·m (0.4 kgf·m, 3.0 ft·lb)
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