kymco mo bw250 Instruction De Maintenance

• The drive pulley, clutch and driven pulley can be serviced with the engine installed.
• Avoid getting grease and oil on the drive belt and pulley faces.  Remove any oil or grease from

them to minimize the slipping of drive belt and drive pulley.

Item

Standard (mm)

Service Limit (mm)

Movable driven face bushing I.D.

40.000_

40.025

40.06

Driven face collar O.D.

39.965_

39.955

39.85

Drive belt width

23.6_

24.4

22.0

Clutch lining thickness

3.963_

4.037

2.0

Clutch outer I.D.

153.0_

153.2

153.5

Weight roller O.D

22.92_

23.08

22.0

Driven face Boss O.D.

26.960_

26.974

26.90

Movable driven face I.D.

27.052_

26.989

27.13

Weight roller W.DTH

18.9_

19.00

18.00

TORQUE VALUES
Drive face nut

88.2_

98N-m

Clutch outer nut

49.0_

58.8N-m

Clutch drive plate nut

49.0_

58.8N-m

SPECIAL TOOLS
Universal holder

Clutch spring compressor

Bearing driver

Lock nut wrench, 39mm
Kick starter spring remover

• Worn drive belt

• Worn drive belt

• Broken ramp plate

• Weak driven face spring

• Worn or damaged clutch lining 

• Worn weight roller

• Broken driven face spring

• Faulty driven face

Engine stalls or motorcycle creeps
• Broken clutch weight spring