Cylinder Head/Valves - KYMCO Agility City 125 Service Manual

Cortesia de / Courtesy of: www.batmotos.com

7. CYLINDER HEAD/VALVES

SERVICE INFORMATION...................... 7-1
TROUBLESHOOTING ............................ 7-2
CAMSHAFT REMOVAL......................... 7-3
CYLINDER HEAD REMOVAL .............. 7-5
SERVICE INFORMATION
GENERAL INSTRUCTIONS
The cylinder head can be serviced with the engine installed in the frame.
When assembling, apply molybdenum disulfide grease or engine oil to the valve guide movable
parts, valve arm and camshaft sliding surfaces for initial lubrication.
The camshaft is lubricated by engine oil through the cylinder head engine oil passages. Clean and
unclog the oil passages before assembling the cylinder head.
After disassembly, clean the removed parts and dry them with compressed air before inspection.
After removal, mark and arrange the removed parts in order. When assembling, install them in
the reverse order of removal.
SPECIFICATIONS
Valve clearance (cold)
Cylinder head compression pressure
Cylinder head warpage
Camshaft cam height
Valve rocker arm I.D.
Valve rocker arm shaft
O.D.
Valve seat width
Valve stem O.D.
Valve guide I.D.
Valve stem-to-guide
clearance
7-1
Recambios KYMCO en www.batmotos.com
Item
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
CYLINDER HEAD DISASSEMBLY.......7-7
CYLINDER HEAD ASSEMBLY .............7-8
CYLINDER HEAD INSTALLATION .....7-8
CAMSHAFT INSTALLATION................7-9
Standard (mm)
0.12
0.12
13kg/cm²
29.803
29.5637
10.000 10.015
10.000 10.015
9.972 9.987
9.972 9.987
1.0
1.0
4.975 4.990
4.955 4.970
5.000 5.012
5.000 5.012
0.010 0.037
0.030 0.057
AGILITY CITY 125
Service Limit (mm)
29.40
29.16
10.10
10.10
9.91
9.91
1.8
1.8
4.90
4.90
5.03
5.03
0.08
0.10