PERIODIC MAINTENANCE 2-6
● Remove spark plug, cylinder head cover ①, and
valve timing inspection plug ②.
● Remove the magneto cover cap ③ and rotate
the magneto rotor with the 14 mm box wrench
to set the piston at (TDC) of the compression
stroke.
(Rotate the rotor until the “T”line on the rotor is
a l i g n e d w i t h t h e c e n t e r o f h o l e o n t h e
crankcase.)
● Insert the thickness gauge to the valve stem end
and the adjusting screw on the rocker arm.
● If clearance is off the specification, bring it into
the specified range by using the special tool.
● Reinstall spark plug, cylinder head cover, valve
timing inspection plug and magneto cover cap.
(Refer to page 3-1)
COMPRESSION PRESSURE
SPARK PLUG
Valve clearance specifications
Thickness gauge : 09900-20803
Tappet adjust driver : 09917-13210
0.08~0.13 mm
Valve clearance of IN. and EX.
Valve clearance should be checked when the
engine is cold.
Both the intake and exhaust valves must be
checked and adjusted when the piston is at Top-
Dead-Center (TDC) of the compression stroke.
CAUTION
NOTE:
Inspect Initial 1,000 km and Every 4,000 km.
NOTE:
Inspect lnitial 1,000 km and 4,000 km,.
Replace Every 8,000 km.
Remove the carbon deposits with a wire or pin and
adjust the spark plug gap to 0.8~0.9 mm,
measuring with a thickness gauge.
When removing carbon deposits, be sure to
abserve the appearance of the plug, the color of
the carbon deposits. The color observed indicates
whether the standard plug is suitable or not. If the
Summary of Contents for RX 125 -
Page 1: ...SERVICE MANUAL 99000 97100 SERVICE MANUAL HYOSUNG MOTORS MACHINERY INC RX125 RX 125 ...
Page 5: ......
Page 29: ...PERIODIC MAINTENANCE 2 16 ...
Page 94: ...FUEL SYSTEM 4 12 Start motor Piston Cylinder Oil cooler Cylinder head Crankcase Transmission ...
Page 118: ...CHASSIS 6 6 FRONT BRAKE yyy yyy yyy yyy yy yy y y ...
Page 126: ...CHASSIS 6 14 FRONT FORK ...
Page 132: ...CHASSIS 6 20 STEERING STEM ...
Page 143: ...6 31 CHASSIS SUSPENSION Service limit 10 20 mm Service limit 14 20 mm Service limit 10 20 mm ...
Page 150: ...CHASSIS 6 38 SPACER Apply grease to the spacer when installing Super grease A ...