Kymco MO MXU250 Service Manual - chap11 (carter albero motore controalbero)

11.CRANKSCASE/CRANKSHAFT/

BALANCE SHAFT

MXU 250

11

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

CRANKCASE/CRANKSHAFT/BALANCE SHAFT

__________________________________________________________________________________

SERVICE INFORMATION------------------------------------------------ 11- 2

TROUBLESHOOTING----------------------------------------------------- 11- 2

CRANKCASE/CRANKSHAFT/BALANCE SHAFT------------------ 11- 3

11

11-0

11.CRANKCASE/CRANKSHAFT/

BALANCE SHAFT

MXU 250

11-1

11.CRANKSCASE/CRANKSHAFT/

m

d

BALANCE SHAFT

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 (ÖChapter 7)

−Cylinder/piston (ÖChapter 8)

−Drive and driven pulleys (ÖChapter 9)

−A.C. generator (ÖChapter 16)

−Starter clutch (ÖChapter 18)

−Oil pump (ÖChapter 4)

SPECIFICATIONS Unit: mm (in)

MXU 250

Ite

Connecting rod big end side clearance

Crankshaft Connecting rod big end radial clearance

Run out

TORQUE VALUES

Crankcase bolt 1 kgf-m (10 Nm, 7.2 lbf-ft)
Cam chain tensioner slipper bolt 1 kgf-m (10 Nm, 7.2 lbf-ft)
Cam chain cover bolt 1 kgf-m (10 Nm, 7.2 lbf-ft)

0.05～0.4 (0.002～0.016) 0.6 (0.024)

0～0.008 (0～0.00032) 0.05 (0.002)

TROUBLESHOOTING

Excessive engine noise
Excessive bearing play

Standar

⎯ 0.1 (0.004)

Service Limit

11-2