3-21 ENGINE
PISTON
The following are reminders for piston installation:
● Rub a small quantity of HYOSUNG MOLY PASTE
onto the piston pin.
● Place a clean rag over the cylinder base to pre-
vent piston pin circlip from dropping into
crankcase, and then fit the piston pin circlip with
long-nose pliers.
CYLINDER
Before mounting the cylinder, oil the big end and
small end of the conrod and also the sliding sur-
face of the piston.
● Fit dowel pins ① to crankcase and then fit gasket.
● When fitting the piston, turn arrow mark on the
piston head to exhaust side.
● Hold each piston ring with the piston rings prop-
erly spaced and insert them into the cylinder.
Check to insure that the piston rings are properly
inserted into the cylinder skirt.
Use a new piston pin circlip to prevent circlip
failure which will occur with a bent one.
CAUTION
To prevent oil leakage, do not use the old gas-
ket again, always use new one.
CAUTION
When mounting the cylinder, after attaching
camshaft drive chain, keep the camshaft drive
chain taut. The camshaft drive chain must not be
caught between cam drive chain sprocket and
crankcase when crankshaft is rotated.
CAUTION
There is a holder for the bottom end of the cam
chain guide cast in the crankcase. Be sure that
the guide is inserted properly or binding of the
cam chain and guide may result.
CAUTION
①
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 ...