Yamaha F4B - Removing the Crankcase; Removing the Oil Pump; Removing the Oil Seal Housing

7-23
POWR
Power unit
Removing the oil pump
1. Remove the drain bolt a and gasket b,
and then drain the remaining engine oil.
2. Remove the cover c, gasket d, spring
e, and oil strainer f.
3. Remove the plate g, and then remove
the rotor assembly h.
TIP:
Keep the rotor assembly h in the same
direction as originally installed.
Removing the oil seal housing
1. Remove the oil seal housing a.
2. Remove the O-ring b and oil seals c
and d.
Removing the crankcase
1. Remove the cooling water hose a.
2. Remove the blind plug b and gasket c.
a
b
d
c
e
f
g
h
a
b
d
c
a
c
b