KYMCO Kymco UXV 500i, Service Manual

Page: 241 / 426

12
.LEFT CRANKSCASE/CRANKSHAFT/
BALANCE SHAFT
12-2
UXV 500
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
Chapter 8)
−
Cylinder/piston (
Ö
Chapter 9)
−
Drive and driven pulleys (
Ö
Chapter 10)
−
A.C. generator (
Ö
Chapter 17)
−
Starter clutch (
Ö
Chapter 19)
−
Oil pump (
Ö
Chapter 4)
SPECIFICATIONS
Unit: mm (in)
Item
Standard Service Limit
Not USA type
0.01
～
0.4 (0.002
～
0.016) 0.6 (0.024)
Connecting rod big
end side clearance USA type
0.3
～
0.6 (0.012
～
0.024) 0.8 (0.032)
Connecting rod big end radial clearance 0 ～
0.008 (0
～
0.00032) 0.05 (0.002)
Crankshaft
Run out
⎯
0.1 (0.004)
TROUBLESHOOTING
Excessive engine noise
Excessive bearing play