Maintenance Procedures; Valve Clearance - HYOSUNG COMET 125 Service Manual

2-3 PERIODIC MAINTENANCE
MAINTENANCE PROCEDURE
This section describes the service procedure for
each section of the periodic maintenance.

VALVE CLEARANCE

Inspect Interval
Inspect Initial 1,000 km and Every 4,000 km.
CAUTION
The clearance specification is for COLD state.
The valve clearance specification is different for
intake and exhause valves.
Valve clearance adjustment must be checked and
adjusted, 1) at the time of periodic inspection, 2)
when the valve mechanism is serviced, and 3)
when the camshaft is disturbed by removing it for
servicing.
Remove the spark plug. (Refer to page 2-5)
Remove the fuel tank. (Refer to page 4-1)
Remove the cylinder head cover
Remove the magneto cover plug
inspection plug .
Rotate the magneto rotor to set the front cylinder s
piston at TDC (Top Dead Center) of the compression
stroke.
(Rotate the rotor until
with the center of hole on the crankcase.)
To inspect the front cylinder s valve clearance, insert
the thickness gauge to the clearance between the
camshaft and the tappet.
Valve clearance (when cold)
IN.
EX.
Thickness gauge : 09900 - 20806
and .
and the timing
F line on the rotor is aligned
0.1 0.2 mm (0.004~0.008 in)
0.2 0.3 mm (0.008~0.012 in)
[ FRONT CYLINDER ] [ REAR CYLINDER ]