User Guide

11. CRANKCASE/CRANKSHAFT
11-2
PEOPL E 25 0
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 (
!
chapter 6)
Cylinder/piston (
!
chapter 7)
Right crankcase cover/drive and driven pulley (
!
chapter 8)
A.C. generator/starter clutch (
!
chapter 10)
Rear wheel/rear shock absorber (
!
chapter 15)
Starter motor (
!
chapter 18)
Oil pump (
!
chapter 4)
SPECIFICATIONS
Item
Standard (mm)
Service Limit (mm)
Connecting rod big end side clearance
0.15_ 0.35
0.6
Crankshaft
Connecting rod big end radial clearance
0._ 0.008
0.05
Runout
æ
0.10
TORQUE VALUES
Crankcase bolt 7.8_ 10.8N-m
Cam chain tensioner slipper bolt 7.8_ 11.8N-m
TROUBLESHOOTING
Excessive engine noise
• Excessive bearing play
• Excessive crankpin bearing play
• Worn piston pin and piston pin hole