Joyner JNSZ800DL, Owner'S Manual, Page: 75 / 94

Failure to use the correct coolant or coolant not the same as one in the radiator
or reserve case can harm your ATV. Engine damage may occur if you use coolant
that does not meet the specifications.
F. Carburetor Adjustment
Never make unnecessary adjustments. The factory recommended settings are correct for most
applications. It’s not necessary to disassemble the screw unless the carburetor needs to be replaced.
Prepare a 50r/w tachometer before adjustment.
a. Warm up the engine (5~10min)
b. Tighten the air screw gently. Back out 2-3/8 turns counter clockwise (see Fig. 17) .
c. Connect the tachometer, adjust the throttle to limit the idle speed. The standard
value is (1400RPM).
d.
Turn the air screw counter slowly and observe the RPM of the engine, stop
adjusting as the RPM reaches the top speed.
e.
Adjust the screw and adjust the idle speed to an ideal value.
f. Repeat step d and e until the rotate speed of engine stables.
SERVICE INSTRUCTIONS
Fig.17
G. Cleaning Instructions
Keep your kart clean. With a clean rag, wipe off and dirt and oil from around
controls. Wipe off any spilled fuel and oil. Keep the engine clean of foreign object and
be sure to check that air intake fan is free of debris for proper cooling.
H. Kart Lubrication
26