TOHATSU EverRun MX 18E2, Service Manual

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5-52
Power Unit
2st X18E2 2012
GB
D1
D3
D5
D2
D4
D6
a
b
c
d
e
a
10mm (0.39 in)
b
30mm (1.18 in)
c
80mm (3.15 in)
d
Crank Shaft Direction
e
Crank Web Direction
21) Inspection of Engine Parts
1. Inspection of Cylinder
1) Measure cylinder inner diameters (D
1
- D
6
) at
a
,
b
and
c
.
If any of the diameter is over the limit, replace the cylinder or
bore the liner to make it compatible with an oversize piston.
Cylinder Inner Diameters (D
1
- D
6
) : Standard Value
60.00 mm (2.362 in)
Oversize Piston :
60.50 mm (2.382 in)
Functional Limit :
60.06 mm (2.365 in)
Oversize Piston :
60.56 mm (2.384 in)
· Measure at the area of the largest wear.
The measurement heights
b
and
c
represent
location 5 mm above and below exhaust port.
d
represents diameter in crank shaft direction,
e
represents the one in crank web direction.
· Replace the cylinder in any of the following
cases; the piston sliding surface is severely
damaged such as deeply scratched or scuffed
so that it cannot be repaired with water-proof
sand paper of #400 - 600, or the difference of
liner inner diameter between the largest worn
area and minimum worn area is 0.06mm (0.0024
in) or over.
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