Yingang YG125-23, Maintenance Manual

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YG125-23 Maintenance ManualCylinder Head, Cylinder and Piston
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3. Pull off the spark plug cap,
4. Unclamp the inlet pipe clip and remove the cylinder
head hanging bolt.
5. Remove the cylinder bolt and washer.
6. Remove the cylinder head and cylinder head gasket.
Caution
Do not drop the location pin into the crankcase.
To mount the cylinder head:
Installation is in the reverse order of removal. Precautions
for installation:
1. Confirm the location pin; clean all parts and
components, and check whether the cylinder head
oil through is unobstructed, clean and free of leak.
2. Replace new cylinder head gasket
3. The tightening torque of cylinder bolt is 45N.m.
Warning:
The cylinder head bolt must be fully screwed up to the
tightening torque of 45N.m, and carry out 100%
torque inspection.
Disassembly and assembly of cylinder head
Disassemble and assemble the cylinder head according to the following diagram.
Use the valve remover / replacerto remove and mount the intake valve and exhaust valve.