valve stem and measure the outside diameter of the
valve stem. Maintenance limit value:
Intake
：
φ4.96mm
Exhaust
：
φ4.94mm
2.Maintenance limit value of contact surface
width:1.5mm
3.Check the valve spring for abnormal wear and
measure the free length of the spring:
standard values: outer valve spring 35.55mm
Inner valve spring 32.78 mm
Maintenance limit value:outer valve spring 34.80mm
Inner valve spring 32.03mm
Note: Valve should be replaced if the valve contact
surface is rough, uneven abrasion or abnormal contact
with the valve seat or cannot guarantee sealing
performance.
Inspection of rocker arm and rocker arm shaft
The inspection steps of rocker arm and rocker arm shaft
are as follows:
1.Check whether the rocker arm arc surface is damaged,
whether the valve adjustment screw and nut rotate
flexibly, if wear and damage are serious, it is necessary
to replace the rocker arm;
2.Check whether rocker arm shaft has wear
phenomenon, if the wear is serious, it is necessary to
replace a new rocker arm shaft;
Inspection of camshaft components
The camshaft convex has no obvious concave and
convex feeling when touched by hand
Inspection steps for camshaft components are as
follows:
1.Check whether the camshaft peach tip and base circle
have wear phenomenon, whether the camshaft bearing
rotation is flexible,If the phenomenon of wear or
bearing rotation is bad, it should be replaced with new
camshaft parts;
2.Check whether there is a crack in the pressure
reducing valve swinging block combination, the spring
does not rebound, and whether the centrifugal swinging
block of the pressure reducing valve and the core shaft
are loose. If so, it is necessary to replace the pressure
reducing valve swinging block combination
Inspection of cylinder head
Check the cylinder head as follows:
1.Check whether the sealing of the cylinder head is
good, if the sealing of the cylinder head is poor, it
should be replaced with a new cylinder head or valve;
2.Check spark plug hole and valve seat for cracks;
Summary of Contents for TD125
Page 1: ...KAYO MOTO TD125 SERVICE MANUAL www kayomoto com...
Page 24: ...h e c k t h e c a r b u r e t o r i d l e s p e e d R e p l a c e t h e a i r lt e r C h e c...
Page 28: ...i n g s f o r c r a c k s l e a k s a n d i n c o r r e c t w i r i n g C h e c k c l u t c h...
Page 32: ...h a i n s h a n d l e s e t c a n d c h e c k f o r s m o o t h o p e r a o n C h e c k c h a...
Page 34: ...c h a i n g u i d e a n d c h a i n c o v e r C h e c k s p o k e t e n s i o n C h e c k t...
Page 35: ...h e r i m C h e c k f o r r i m e d g e r u n o u t C h e c k if t h e r i m b e a r i n g i s...
Page 40: ...s y s t e m s e t u p C h e c k t h e c o m p r e s s i o n a n d r e b o u n d o f t h e...
