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crankcase, crankshaft, variable speed drive, balance shaft
Maintenance instructions
Trouble shooting
crankcase decomposition
crankshaft, balance shaft, main and
secondary shaft disassembly
Inspection of crankshaft
Inspection of left and right box
bearing
Inspection of shift fork, shift fork shaft, transmission hub
Inspection the assembly of main and counter shaft
Inspection of oil filter parts, oil filter
Assembly of transmission, crankshaft and balance shaft
Assembly of box and oil Filter
Maintenance instructions
This section introduces the installation, detection of transmission, crankshaft, balance mechanism, when doing
the above work, the crankcase should be separated first, and the disassembly of other parts about the engine should
be carried out before the crankcase is separated.
Work before crankcase separation
Removal of cylinder head
Removal of cylinder/piston
Removal of clutch, oil pump, shift mechanism, balance tooth
Removal of Magneto
Component maintenance parameters
Items
standard value mm
Maintenance threshold mm
selector fork
Inner diameter of right fork of
secondary shaft / inner diameter of
left fork of secondary shaft
φ14.016
~
φ14.043
φ14.045
Inner diameter of spindle dial fork
φ12.016
~
φ12.043
φ12.045
Claw thickness
4.8
~
4.9
4.8
Change fork
shaft
Spindle fork shaft external diameter
φ11.973
~
φ12
φ11.95
External diameter of fork shaft
φ13.973
~
φ14
φ13.95
cylindricity
0.006
----
crankshaft
Inner diameter of connecting rod
φ16.015
~
φ16.025
φ16.04
Large end gap of link
rod
axial
0.15
~
0.4
0.6
radial
0.008
~
0.016
0.02
balance shaft
diameter of axle
φ19.98
~
φ19.993
φ19.96