Arctic Cat 350 2011 Service Manual page 14

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CAUTION
Before removing a spark plug, be sure to clean the
area around the spark plug. Dirt could enter engine
when removing or installing the spark plug.
Adjust the gap to 0.7-0.8 mm (0.028-0.032 in.) for
proper ignition. Use a feeler gauge to check the gap.
When installing the spark plug, be sure to tighten it
securely. A new spark plug should be tightened 1/2
turn once the washer contacts the cylinder head. A
used spark plug should be tightened 1/8 - 1/4 turn once
the washer contacts the cylinder head.
Liquid Cooling System
(425)
NOTE: Debris in front of the engine or packed
between the cooling fins of the radiator can reduce
cooling capability. Using a garden hose, wash the
radiator to remove any debris preventing air flow.
CAUTION
Arctic Cat does not recommend using a pressure
washer to clean the radiator core. The pressure may
bend or flatten the fins causing restricted air flow, and
electrical components on the radiator could be dam-
aged. Use only a garden hose with spray nozzle at nor-
mal tap pressure.
2-6
ATV-0051
ATV0052C
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The cooling system capacity can be found in the speci-
fications chart. The cooling system should be
inspected daily for leakage and damage. If leakage or
damage is detected, take the ATV to an authorized
Arctic Cat ATV dealer for service. Also, the coolant
level should be checked periodically.
CAUTION
Continued operation of the ATV with high engine tem-
perature may result in engine damage or premature
wear.
NOTE: High engine RPM, low vehicle speed, or
heavy load can raise engine temperature. Decreas-
ing engine RPM, reducing load, and selecting an
appropriate transmission gear can lower the tem-
perature.
When filling the cooling system, use a coolant/water
mixture which will satisfy the coldest anticipated
weather conditions of the area in accordance with the
coolant manufacturer's recommendations. While the
cooling system is being filled, air pockets may
develop; therefore, run the engine for five minutes
after the initial fill, shut the engine off, and then fill the
cooling system to the bottom of the stand pipe in the
radiator neck.
Checking/Filling
1. Locate the coolant reservoir on the right side
behind the radiator.
2. Remove the cap and fill with the appropriate cool-
ant until coolant level is between the LOW and
FULL lines. Do not overfill.
3. Install the cap on the reservoir.
Muffler/Spark Arrester
At the intervals shown in the Periodic Maintenance
Chart, clean the spark arrester using the following pro-
cedure.
! WARNING
Wait until the muffler cools to avoid burns.
Section
Table of Contents
KC338B