Suzuki RV50, Service Manual

Page: 33 / 59

1Dowel pin
right
wrong
6. Piston
The piston pin hole is off-center and the piston
skirt is cut according to the shape of the scaveng­
ing passage on the crankcase, therefore, the piston
should be installed in the proper direction.
1) The arrow mark on the piston head indicates
the exhaust side.
CD Arrow mark
2) Apply engine oil to the piston rings and side
wall of the piston before installing the cylinder.
3) Insert the piston in the cylinder while paying
attention that the ring open ends do not rotate
out of their located position.
7. Cylinder
In case of installing a re bored cylinder, be sure to
check if the edges of the ports and skirt are cham­
fered, If the edges are sharp, chamfer them with a
32
scraper or emery paper. This
will
prolong life of
the piston and the piston rings. The designed
chamfer is as illustrated in the fi
gu
re.
8. Cylinder head
When installing the cylinder head, tighten 4 cylin­
der head fixing nuts evenly in the sequence as
illustrated below,
Tightening torque:
60
"'
100 kg-cm ( 4.4 "' 7.3 ft-1
9. Oil reservoir plate
When fitting the oil reservoir plate to the right
crankcase, the screws should be used as shown in
the fi
gu
re, otherwise the head of the screw will
come in contact with the primary driven gear. The
flat headed screws must be used in the correct
holes.