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CRANKCASE, CRANKSHAFT ASSY., AND
POWR
CYLINDER BODY
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SERVICE POINTS
Cylinder inspection
NOTE:
Measure the cylinder bore in parallel and at
a right angle to the crankshaft. Then, aver-
age the measurements.
Piston inspection
5-36
1. Measure:
Cylinder bore
Out of specification → Rebore or
replace the cylinder.
Standard
65.000 ~ 65.015 mm
Cylinder
(2.5590 ~ 2.5596 in)
bore "D"
Taper
—
limit "T"
Out of
—
round limit
D = Maximum Dia. (D
1
T = (maximum D
or D
1
or D
)
6
1. Measure:
Piston diameter
Out of specification → Replace the
piston.
Distance
a
2 mm
64.950 ~ 64.965 mm
Standard
(0.07 in)
(2.5570 ~ 2.5573 in)
Oversize piston diameter:
Oversize 1: + 0.25 mm (0.001 in)
Oversize 2: + 0.50 mm (0.002 in)
E
Wear
limit
—
0.08 mm
(0.003 in)
0.08 mm
(0.003 in)
~ D
)
6
) – (minimum D
2
5
Piston diameter
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