3-40
1
2
3
4
5
6
7
8
9
10
ENGINE
PISTON, CAMSHAFT, CRANKCASE, AND CRANKSHAFT
2.
Install:
• Piston ring
(into the cylinder)
TIP
Use the piston crown to level the piston ring near bottom of
cylinder “a”, where cylinder wear is lowest.
3.
Measure:
• Piston ring end gap
Out of specification
Replace the piston rings as a
set.
Piston ring
Top ring
Side clearance:
0.03–0.05 mm (0.0011–0.0019 in)
Limit:
0.10 mm (0.0039 in)
2nd ring
Side clearance:
0.02–0.04 mm (0.0007–0.0015 in)
Limit:
0.10 mm (0.0039 in)
a
b
b. Upper of cylinder
Top ring
End gap (installed):
0.20–0.35 mm (0.0079–0.0138 in)
Limit:
0.60 mm (0.0236 in)
2nd ring
End gap (installed):
0.20–0.35 mm (0.0079–0.0138 in)
Limit:
0.70 mm (0.0275 in)
Oil ring
End gap (installed):
0.20–0.70 mm (0.0079–0.0276 in)
Summary of Contents for MX250
Page 2: ...7VE F8197 10_Cover indd 2 2017 03 16 16 24 50 ...
Page 86: ...5 1 1 2 3 4 5 6 7 8 9 10 ELECTRICAL ELECTRICAL CIRCUIT DIAGRAM B B B B B B B B W Y 1 2 3 4 5 ...
Page 100: ...6 6 1 2 3 4 5 6 7 8 9 10 TROUBLESHOOTING GOVERNOR OPERATION MEMO ...
Page 116: ...7 16 1 2 3 4 5 6 7 8 9 10 SPECIFICATIONS WIRE ROUTING DIAGRAM TCI UNIT ...
Page 120: ...APPENDIX CIRCUIT DIAGRAM B B B B B B B B W Y 1 2 3 4 5 ...
Page 122: ...MEMO ...
Page 123: ...7VE F8197 10_Cover indd 2 2017 03 16 16 24 50 ...
