General Information; Trouble Diagnosis - DAELIM ET-250 Service Manual

11-2 General information

Operational precautions
Ÿ This Section concerns disassembly of the crankcase for repair purpose.
Ÿ Remove following components before disassembling crankcase.
¡ÐEngine remove
¡ÐCylinder head
¡ÐCylinder and piston
¡ÐDrive face and driven pulley
¡ÐAC generator/Start one way clutch
Ÿ 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
Connecting rod side clearance of the big end
Crankshaft
Vertical clearance of the big end of the connecting rod
Run-out
Torque value
Bolts for crankcase
Engine oil drain bolt
Cylinder stud bolt
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
Section 5
Section 6
Section 7
Section 8
Section 10
Item
0.8~1.2kgf- m
3.5~4.5kgf- m
1.0~1.4kgf- m
Unit: mm
Standard Limit
0.100~0.400 0.600
0~0.008 0.050
0.030 0.100