Specifications

8.Check connecting rod small end
(1)lnstall piston pin, bearing onto the connecting
rod small end, then check the looseness
of the piston pin.
(2)Measure the inner diameter of the connecting
rod small end.
H. Installing cylinder and piston
1.Place the piston ring into the second ring ditch first, then install the
piston ring into the first ditch.
2
a. Piston ring should be installed into piston ring ditch by even force
b. After assembling, be sure that the piston ring sliding surface is at the same height as
the piston outer surface.
c. If the piston ring can not fit into the ditch, please clean up the carbon in the piston ring
ditch or piston ring itself.
3.
a. Piston ring must be installed in the correct location.
b. After installing the piston ring, it should be able to rotate freely.
c. If it is necessary to change the new piston ring, it must change the whole set.
4.
a. The location of the piston ring gap and the lock pin must be in opposite side.
b. The mark”” on the piston tip must be pointing to the exhausting port.
c. Lubricate the piston pin before installation.
5.Please follow the opposite procedure of dismantling to install cylinder and cylinder head.
Limit of use: replace a new one when over 14.025mm.(50cc ENGINE)