Yamaha F150B Service Manual - Powr
7-53
Power unit
POWR
Disassembling the cylinder block
1.
Remove the crankcase bolts in the
sequence numbers (a, b, · · ·).
TIP:
Do not remove the plugs a from the crank-
case.
2.
Remove the connecting rod bolts and the
connecting rod caps b, and then remove
the connecting rod and piston
assemblies c.
TIP:
• Make sure to keep the bearings in the order
as they were removed.
• Mark each piston with an identification
number a of the corresponding cylinder.
• Do not mix the connecting rods and caps.
Keep them organized in their proper
groups.
3.
Remove the main bearing cap bolts in
the sequence numbers (a, b, · · ·).
4.
Remove the crankshaft.
5.
Remove the collar d.
a
a
b
c
d
e
f
g
h
i
j
m
n
k
l
b
c
a
Bearing separator e: 90890-06534
Gear puller f: 90890-06540
General cylindrical tool g:
c = 19.9mm (0.78 in)
d = 90.0mm (3.54 in)
a
b
c
d
e
f
c
d
g
d
e
f
g