11-2 General information
Operational precautions
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This Section concerns disassembly of the crankcase for repair purpose.
Ÿ
Remove following components before disassembling crankcase.
-
Engine remove
Section 5
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Cylinder head
Section 6
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Cylinder and piston
Section 7
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Drive face and driven pulley
Section 8
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AC generator/Start one way clutch
Section 10
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In case it requires replacing the crankshaft bearing, the driving chain of engine oil pump or the timing
chain, it is preferably to replace crankshaft as a unit.
Specification
Unit: mm
Item
Standard
Limit
Connecting rod side clearance of the big end
0.100~0.400
0.600
Vertical clearance of the big end of the connecting rod
0~0.008
0.050
Crankshaft
Run-out
0.030
0.100
Torque value
Bolts for crankcase
0.8~1.2kgf- m
Engine oil drain bolt
3.5~4.5kgf- m
Cylinder stud bolt
1.0~1.4kgf- m
Tools
Special tools
L. crank shaft oil seal driver (27*42*7): SYM-1332100-HMA
11-3 Trouble diagnosis
Engine noise
Ÿ
Loose crankshaft bearing
Ÿ
Loose crankshaft pin bearing
Ÿ
Worn out piston pin and pin hole
Summary of Contents for ET-250
Page 1: ...1 ET 250...
Page 51: ...Use 32 cutter to cut a quarter upper parts out...
Page 54: ......
Page 60: ...7 1 Mechanism Diagram 0 8 1 2kgf m 1 0 1 4kgf m...
Page 67: ...7 7 Cylinder Installation Install dowel pins and new gasket Dowel pins...
Page 96: ...10 1 Mechanism Diagram 5 0 6 0kgf m 1 0 1 4kgf m 0 8 1 2kgf m...
Page 140: ...REAR BRAKE...
Page 158: ......
Page 159: ...17 8 WIRING DIAGRAM...