kymco mo bw250 Instruction De Maintenance

• This section covers crankcase separation to service the crankshaft.  The engine must be removed

for this operation.

• When separating the crankcase, never use a driver to pry the crankcase mating surfaces apart

forcedly to prevent damaging the mating surfaces.

• When installing the crankcase, do not use an iron hammer to tap it.
• The following parts must be removed before separating the crankcase.

Cylinder head (!6-4)
Cylinder/piston (!7-3)
Right crankcase cover/drive and driven pulley (!8-3)
A.C. generator/starter clutch (!10-3)
Rear wheel/rear shock absorber (!15-4)
Starter motor (!19-3)
Oil pump (!4-4)

Item

Standard (mm)

Service Limit (mm)

Connecting rod big end side clearance

0.15_

0.35

0.6

Crankshaft Connecting rod big end radial clearance

0._

0.008

0.05

Runout

æ

0.10

TORQUE VALUES
Crankcase bolt

7.8_

10.8N-m

Cam chain tensioner slipper bolt

7.8_

11.8N-m

SPECIAL TOOL
Gear remover 

Excessive engine noise
• Excessive bearing play
• Excessive crankpin bearing play
• Worn piston pin and piston pin hole