8. Put the O-ring into the groove of the valve cover, and
then install the valve cover on the cylinder head and
tighten, fastening torque: 8 ~ 12N·m.
9. Put the spark plug into the spark plug thread of the
cylinder head and tighten it.
Fastening torque: 10 ~ 12N·m.
Cylinder block and piston
Matters needing attention
◆
Cylinder head lubricating oil is through the oil hole next to the left AB bolt of the engine to the cylinder head.
Before installing the cylinder block, ensure that the oil hole next to the left AB bolt is unimpeded, otherwise it is
easy to cause engine damage;
◆
Can not make dust or dust into the crankcase.
Main parameters and maintenance standards of cylinder block and piston
No.
Items
Standard value
Maintenance limit
value
Remark
1
Cylinder
block
Cylinder diameter
Φ52.4~φ52.41
Φ52.418
Cylindricity
0.005
0.01
Flatness of cylinder
0.04
0.06
2
Piston
Skirt diameter, H=7
Φ52.375~φ52.385
Φ52.36
Pin holes diameter
φ13.002~φ13.008
φ13.017
Clearance between the
piston pin and the piston
pin hole
0.001~0.012
0.025
Cleara
nce
betwee
n
cylind
er and
piston
0.025~
0.0350
.07Sec
ond
rinf0.0
2~0.06
0.08sid
e
clearan
ceFirst
ring0.0
3~0.06
0.08Oi
l
ring0.2
~0.81.
4Seco
nd
Piston ring
closed interval
First ring
0.1~0.2
5
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...
