Service Information; Troubleshooting - KYMCO Bet & Win 125 User Manual

11
. CRANKCASE/CRANKSHAFT

SERVICE INFORMATION

GENERAL INSTRUCTIONS
• 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)
SPECIFICATIONS
Connecting rod big end side clearance
Crankshaft Connecting rod big end radial clearance
Runout
TORQUE VALUES
Crankcase bolt
Cam chain tensioner slipper bolt
SPECIAL TOOL
Gear remover

TROUBLESHOOTING

Excessive engine noise
• Excessive bearing play
• Excessive crankpin bearing play
• Worn piston pin and piston pin hole
Item
7.8 10.8N-m
7.8 11.8N-m
Bet & Win 125/150
Standard (mm) Service Limit (mm)
0.15 0.35
0. 0.008
æ
0.6
0.05
0.10
11-2