Joyner JNSZ150DS Owner's Manual page 21

Figure 9
Figure 11
a. Put the vehicle on the level ground.
b. Shut down the engine, put a collecting oil plate under the engine oil outlet. Loosen
the oil outlet plug in the warm engine. Let the engine oil out fully (see Fig. 9).
c. Tighten the engine oil outlet plug.
d. Open the cover of engine oil inlet (see Fig. 9), fill oil (SAE 15W/40 ) about 0.9
liters to the engine.
e. Pull out the engine oil level (see Fig. 10), confirm the corrective oil level in the
crankcase (see Fig. 11)
Check engine oil and recharge
a. If the color of engine oil changes, need to replace engine oil. Replace engine oil as
above.
b. Check the engine oil level, recharge if necessary from d as above.
C. Spark Plug
a. Remove the spark plug and inspect it
each time you change the oil.
(Use a spark plug wrench) The electrodes
should be kept clean and free of carbon.
The presence of carbon or excess oil will
greatly reduce proper engine performance.
If possible, check the spark plug gap
(area between electrodes) using a wire feeler
gauge. This specification is 0.025"~0.030".
b. Before installing spark plug coat threads
lightly with graphite grease if possible,
to ensure easy removal next time the spark plug
needs inspection (see Fig. 12).
c. It is advisable to replace the spark plug at least once a year to insure easy starting
and good engine performance
SERVICE INSTRUCTIONS
Figure 10
Figure 12
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