Polaris 550 Transport Owner's Manual page 119

TROUBLESHOOTING
Engine Troubleshooting
Problem
Engine turns but fails
to start
Engine lacks power
Engine continually
backfires
116
Probable Cause Solution
Faulty ignition
No fuel to engine
Flooded engine (too
much choke used)
Poor engine com-
pression
Fouled or defective
spark plug(s)
Fuel filter (loss of
high RPM power)
Incorrect clutching
Carburetor and fuel
pump
Faulty plug(s)
Carburetor / Fuel
System
Incorrect throttle
freeplay or faulty
switch
• 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.
• Use the choke. See page 52.
• Make sure fuel tank contains fuel.
• Ice may be in fuel line, filter or
pump. Add isopropyl alcohol to
fuel system. On the standard
Polaris carburetor, the choke will
not function with the throttle
depressed. See second item under
Probable Cause" of Engine Contin-
ually Backfires".
• Hold throttle open, crank engine
several times (may be necessary to
change plug(s).
• Mixture is too lean. A main jet that
is too small will cause seizure
resulting in loss of power. This
indicates a major engine problem
that must be repaired before operat-
ing. SEE YOUR DEALER.
• Replace the plug(s).
• Check fuel filter flow. Disconnect
hose and drain 1/2 cup. Fuel flow
should be steady and encompass
the entire diameter of fuel line. If
not, replace filter.
• SEE YOUR DEALER.
• SEE YOUR DEALER.
• Change plug(s).
• Dirt or ice may be in the fuel sys-
tem (add deicer to non-ethanol fuel
at all times to prevent icing).
• SEE YOUR DEALER.