Arctic Cat 120 Sno Pro Operator's Manual page 12

7. Flooding - If the engine does not
start when the choke is being used
but seems ready to start, push the
choke in completely.
 NOTE: Continued choking will
only cause the engine to flood
more.
 NOTE: If the engine fails to start
during the attempt with the throttle
lever compressed, remove the
spark plug and clean and dry it
thoroughly or install a new, prop-
erly gapped, recommended spark
plug.
8
8. To shut the engine off, turn the
ignition key to the OFF position,
move the emergency stop switch
to the OFF (down) position, or pull
the tether cap from the tether
switch.
 NOTE: Unless the engine will be
started within a short period of
time, close the gas tank shut-off
valve (located under the gas tank)
by rotating the valve clockwise.
CAUTION
If the snowmobile is not to be used
for an extended period of time, be
sure to close the gas tank shut-off
valve.