ZHEJIANG KAYO MOTOR CO., LTD.
www.kayomoto.com
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Cylinder
head
and
cylinder
block
connecting bolt
Decomposition of cylinder head
1. Remove the camshaft limit bolt;
2. Remove the mandrel bolts of the tension plate,
and remove the tension plate;
3. Remove the valve rocker arm shaft and valve
rocker arm assembly;
4. Remove the upper valve spring seat, valve
spring combination and valve;
5. Remove the camshaft components.
Inspection of valves and valve springs
1. Check whether the valve is bent or the valve
stem is abnormally worn, and measure the outer
diameter of the valve stem. Repair limit value:
Air intake: φ5.45mm
Exhaust: φ5.43mm
2. The maintenance limit value of the width of the
contact surface: 1.5mm
3. Check whether the valve spring is abnormally
worn, and measure the spring
length:
Free length: 40.5mm
Repair limit value: 39.5 mm
