Service Information; Troubleshooting - KYMCO Downtown 200i Service 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 knock the crankcase forcedly to prevent damaging
the mating surfaces.
• When installing the crankcase, do not use an iron hammer to tap it.
• When installing the crankcase or crankshaft, must be replaced in pair.
• The following parts must be removed before separating the crankcase.
Cylinder head
Cylinder/piston
Right crankcase cover/drive and driven pulley
A.C. generator/starter clutch
Rear wheel/rear shock absorber
Starter motor
Oil pump
SPECIFICATIONS
Connecting rod big end side clearance
Crankshaft
Connecting rod big end radial clearance
TORQUE VALUES
Crankcase cover bolt
Cam chain tensioner pivot

TROUBLESHOOTING

Excessive engine noise
• Excessive bearing play
• Excessive crankpin bearing play
• Worn piston pin and piston pin hole
Item
1.0~1.4 kgf-m (11.8 N-m)
0.8~1.2 kgf-m (9.8 N-m)
Standard (mm) Service Limit (mm)
0.15～0.35
0～0.008
DOWNTOWN 200i
0.6
0.05
11-2