Polaris 600 IQ Shift ES Owner's Manual page 125

Engine Troubleshooting
Problem
Engine turns but fails
to start
Engine lacks power
Engine continually
backfires
Engine requires
more than normal
pulls to start
Engine backfires but
fails to start
Probable Cause Solution
Faulty ignition
No fuel to engine
Poor engine com-
pression
Fouled or defective
spark plug(s)
Fuel filter (loss of
high RPM power)
Incorrect clutching
Faulty plug(s)
Fuel System
Incorrect throttle
freeplay or faulty
switch
Poor fuel
Not enough fuel get-
ting to engine
Spark plug wires
may be on wrong
cylinder
TROUBLESHOOTING
• Install new spark plug(s). If engine
still fails to start, check for spark. If
there's no spark, SEE YOUR
DEALER.
• Make sure the fuel valve is on.
• Make sure the fuel tank contains
fuel.
• Ice may be in the fuel line, filter or
pump. Add isopropyl alcohol to the
fuel system.
• Mixture is too lean. A main jet that
is too small will cause seizure result-
ing in loss of power. This indicates a
major engine problem that must be
repaired before operating. SEE
YOUR DEALER.
• Replace the plug(s).
• SEE YOUR DEALER.
• SEE YOUR DEALER.
• Change plug(s).
• Dirt or ice may be in the fuel system
(deicer should be added to non-etha-
nol fuel at all times for assurance
against fuel line icing).
• SEE YOUR DEALER.
• Replace with fresh winter fuel.
• SEE YOUR DEALER.
• Reinstall spark plug wires to the cor-
responding cylinder.
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