Yamaha MZ250, Руководство по обслуживанию

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3-37
ENG
CHECKING THE CYLINDER
1. Measure:
9
Cylinder inside diameter
TIP
Take side to side
a
and front to back
b
measurements at each of the three locations
A, B, C (total of six measurements) using the
cylinder gauge, and then calculate the aver-
age of the measurements.
Cylinder taper = Maximum A – Minimum C.
Out of specification
→
Replace the
crankcase.
Cylinder inside diameter:
Refer to “SPECIFICATIONS” in
the Supplementary service
manual.
Limit:
Refer to “SPECIFICATIONS” in
the Supplementary service
manual.
Cylinder taper limit:
Refer to “SPECIFICATIONS” in
the Supplementary service
manual.
a
b
PISTON, CAMSHAFT, CRANKCASE, AND
CRANKSHAFT
8
1
2
3
4
5
6
7
8
INSTALLING THE CRANKCASE COVER
1. Install:
9
Crankcase cover
9
Crankcase cover bolts
1
to
8
TIP
Tighten the bolts to the specified torque in two
stages and in order from
1
to
8
.
Crankcase cover bolt:
Refer to “TIGHTENING TORQUES”
in the Supplementary service
manual.