ZHEJIANG KAYO MOTOR CO., LTD.
55
The piston ring is over
worn
活塞环磨损过度
The piston ring opening gap
or the side gap is too wide
活塞环开口间隙或侧隙太宽
Insufficient elasticity of
piston ring
It is impossible to tight the
piston ring and the cylinder
properly
Improper fixing
The piston ring gap is not
staggered
Thick blue and white fume
form the exhaust muffler
pipe
Refixing
the
piston ring set
Piston pin
The piston pin is over
worn
The fitting clearance
between the piston pin and
the hole is too wide
活塞销和孔之间的安装间隙
Striking sound of the piston
pin and of the cylinder.
Replace the
piston pin.
Connectin
g rod
The connecting rod
small-end hole is over
worn.
The
fitting
clearance
between the piston pin and
the small-end is too wide.
Striking sound of the piston
and of the cylinder.
Replace the
connecting rod
The connecting rod is
crooked or twisted.
The
connecting
rod
is
crooked or twisted.
Striking
sound
of
the
cylinder.
Replace
the
connecting rod.
The big-end hole is
over worn
Radial and axes gap of the
connecting rod big end is too
large
Striking sound of the
big-end bearing and of the
cylinder.
Replace the
connecting rod
Timing
sprocket
The gear is over worn
of damage
Abnormal sound during
sprocket driving
Replace the
timing sprocket
6.5 Maintenance of Mechanism
6.5.1 Disassemble, assemble and maintain valve mechanism
Remove rocker arm shaft
