KYMCO MX 125 - Crankcase;Crankshaft;Balance Shaft; Service Information; Troubleshooting

11. CRANKSCASE/CRANKSHAFT/
BALANCE SHAFT
11-2
MX’er SYSTEM
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• This section covers crankcase separation to service the crankshaft. The engine must be
removed for this operation.
• The following parts must be removed before separating the crankcase.
−Cylinder head (
Ö
Section 7)
−Cylinder/piston (
Ö
Section 8)
−Drive and driven pulleys (
Ö
Section 9)
−A.C. generator (
Ö
Section 4)
−Carburetor/air cleaner (
Ö
Section 5)
−Starter motor (
Ö
Section 16)
−Oil pump (
Ö
Section 4)
SPECIFICATIONS
Ite
m
Standard (mm) Service Limit (mm)
Connecting rod big end side clearance
0.100.35 0.55
Crankshaft Connecting rod big end radial clearance
00.008 0.05
Run out
⎯ 0.10
TORQUE VALUES
Crankcase bolt 0.81.2kgf-m
Cam chain tensioner slipper bolt 0.81.2kgf-m
Cam chain cover bolt 0.81.2kgf-m
TROUBLESHOOTING
Excessive engine noise
Excessive bearing play