Operation Manual

16
MAINTENANCE
OPERATIONS
Oil change
The engine oil is the chief factor affecting the performance
and the service life of the engine. Therefore, the oil
recommended on page 11 should be used and the oil
always maintained at the proper level. Further, the oil
should be changed at the service schedule as shown on
page 14-15.
Perform the engine oil change in the following manner.
Drain the oil while the engine is still warm as this will assure
complete and rapid draining.
1 Filler cap dipstick
2 Lower level mark
3 Upper level mark
Spark plug cleaning and adjustment
LG A7RTC is used on these models. Servicing of the spark
plug is as follows.
1 Detach the high tension cord cap and remove
the spark plug with the spark plug wrench which is
provided in the tool kit.
2 Inspect the tip of the spark plug for deposits or
fouling condition.
Clean the spark plug with a spark plug cleaner,
however, if it is not available, clean the tip of the spark
plug with a stiff wire such as a pin to remove the
depostits, wash in gasoline and follow by drying with a
rag.
3 Adjust the spark plug gap to 0.6~0.7mm
(0.024~0.028 inch) with a thickness gauge.
The adjustment is made by bending the negative
(grounded) electrode.
4 When installing the spark plug, it should be first
screwed in finger tight and then torqued with the spark
plug wrench for further 1/2 to 3/4 turn.
NOTE:
1 DO NOT ATTEMPT TO DRY OR REMOVE SOOT FROM
THE SPARK PLUG BY BURNING.
2 DO NOT USE IMPROPER HEAT RANGE SPARK PLUG.
4 Oil drain plug
1 Remove the oil filler cap from the R. crankcase cover.
2 Place an empty container of adequate size under the
crankcase to catch the oil, and then remove the drain
plug with a 17mm~19mm wrench.
3 After the oil stops draining from the crankcase, operate
the kick starter several times to drain any oil which may
be left in the pockets.
4 When the oil has been completely drained, reinstall the
drain plug –4–, making sure that the O ring used on the
plug is in good condition.
5 Fill the crankcase through the oil filler opening with ap
proximately 0.7 lit. of recommended grade oil. Check
the oil level with the filler cap dipstick, however, when
making this check, does not screw in the cap. Oil level
should be between the upper –2– and lower –3– level
marks on the dipstick, when checking the oil make
certain the motorcycle is in upright and level position.
Note:
1 If the oil is below the lower level mark 3. on the dipstick add
oil up to the proper level before operating engine.
2 When operating the motorcycle in unusually dusty conditions,
it is recommended that the oil changes be performed at more
frequent intervals than that which is specified in the service
schedule; this will have a very beneficial effect on the engine.