Engine

Rinsing and inspection
Rinse and clean the carbon deposit on the
piston, piston ring and pin.
Rinse and clean the carbon deposit on the
bottom of the cylinder bore.
Measure the diameter of the cylinder bore.
480 M cylin
der bore (unit: mm)
480 E cylinder bore (unit: mm)
1
79.94
-
79.95
1
79.94
-
79.95
2
79.95
-
79.96
2
79.95
-
79.96
3
79.96
-
79.97
3
79.96
-
79.97
Ex-factory
grouping
4
79.97
-
79.98
4
79.97
-
79.98
A
80.23
-
80.24
A
80.23
-
80.24
B
80.24
-
80.25
B
8
0.24
-
80.25
Ex-factory
repair
C 80.25-80.26 C 80.25-80.26
Standard 79.965-77.975 Standard 79.965-77.975
Oversized by 0.29
0.29
80.245-80.255 Oversized by 0.29 80.245-80.255
For
Maintenance
Oversized by 0.5 80.466-80.475 Oversized by 0.5 80.466-80.475
Grind the cylinder bore according to the size for
maintenance with the grinding angle to be 50°
~60°.
Measure the piston from the point that is 19mm
away from the bottom of the skirt.
A-34
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