Spark Plug - Carter INTERCEPTOR GTR 250 Owner's Manual

D. Carburetor Adjustment
Never make unnecessary adjustments. The factory recommended settings are correct for most
applications.
Air screw was set at factory, so no adjustment is needed. Note the number of
turns it takes to scew it all the way in for ease of installation. The parking brake
must be used to stop the kart to perform the adjustments.
a. Warm up engine (5~10min).
b. Tighten the air screw gently. Backout 2 turns.
c. Connect the tachometer, adjust the throttle to limit
the idle speed. The standard value is 1700 RPM.
d. Turn the air screw counter-clockwise slowly and
observe the RPM of the engine, stop adjusting as the
RPM reaches top speed.
e. Adjust the screw and adjust the idle speed to an
ideal value.
f. Recheck and readjust the idle speed if necessary.
E. Spark Plug
a. Remove the spark plug and inspect it each time you
change the oil. (Use a spark plug wrench). Keep the
electrodes clean and free of carbon. The presence of
carbon or excess oil will gently reduce proper engine
performance. If possible, check the spark plug gap
(area between electrodes) using a wire feeler guage.
This specification is 0.8~0.9mm.
b. Before installing the spark plug, coat threads lightly
with graphite grease, if possible, to ensure easy removal
in the future.
c. It is advisable to replace the spark plug at least once a
year to insure easy starting and good engine performance.
SERVICE INSTRUCTIONS
WARNING
28
THROTTLE VALVE STOPPER SCEW
AIR ADJUSTMENT SCREW
SEAM,DIRT,CARBON
SEAM
0.8~0.9mm
WASHER