kymco mo kxr 50 서비스 매뉴얼

TORQUE VALUES
Cylinder head cover bolt

0.8_ 1.2kgf-m

Cam shaft hold nut

1.8_ 2.2kgf-m

Apply engine oil to threads

Tappet adjusting nut

0.7_ 1.1kgf-m

SPECIAL TOOLS
Valve spring compressor

E040

Tappet adjuster

E036

• The poor cylinder head operation can be diagnosed by a compression test or by tracing engine

top-end noises.

• Compression too low

• Worn valve stem or valve guide
• Damaged valve stem seal

Compression too low
• Incorrect valve clearance adjustment

• Burned or bend valves

• Incorrect valve clearance adjustment

• Incorrect valve timing

• Sticking valve or broken valve spring

• Broken valve spring

• Damaged or worn camshaft

• Poor valve and seat contact

• Worn cam chain guide

• Leaking cylinder head gasket

• Worn camshaft and rocker arm

• Warped or cracked cylinder head
• Poorly installed spark plug

Compression too high
• Excessive carbon build-up in combustion

chamber