7-95
POWR
Power unit
Checking the cylinder block anode
1. Check the anodes. Replace if eroded.
Clean if there is grease, oil, or scales.
NOTICE: Do not apply grease, oil, or
paint to the anodes.
Assembling the cylinder block
Before assembling the cylinder block, check
the crankcase bolts. See “Checking the
crankcase bolt” (7-89).
Do not reuse a connecting rod bolt, collar,
gasket, oil seal, O-ring, or piston pin clip,
always replace it with a new one.
1. Install a new collar 1 by striking it using
a plastic hammer.
2. Assemble the piston 2, the connecting
rod a, the piston pin 3, and new piston
pin clips 4.
TIP:
• Face the protrusion b on the connecting
rod a in the same direction as the mark c
on the piston crown.
• Do not align the piston pin clip end with the
groove d in the piston pin boss.
3. Install the oil rings e, 2nd ring f, and
top ring g.
4. Offset the piston ring end gaps. NOTICE:
Be careful not to scratch the pistons
or break the piston rings.
TIP:
• Make sure that the “2R” mark h on the 2nd
ring f and “R” mark k on the top ring g
are facing up.
• Make sure that the piston rings move
smoothly.
5. Install the crankpin bearings 5 into the
connecting rod a and connecting rod
cap m.
1
4
4
3
2
a
b
4
d
c
#3
#4
#5
e
f
g
h
k
#1
#2
45˚ 45˚
#5
#4
#3
#1
#2
a
5
m
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