Polaris 700 Fusion Owner's Manual page 123

TROUBLESHOOTING
Engine Troubleshooting
Problem
Engine turns
but fails to start
Engine lacks
power power
Engine g
continually i ll
backfires
Engine requires
more than
normal pulls to
start
Engine back-
fires but fails to
start
120
Probable Cause Solution
Faulty ignition
No fuel to engine
Poor engine
compression
Fouled or defective
spark plug
Fuel filter (loss of
high RPM power)
Incorrect clutching
Faulty plug(s)
Fuel System
Incorrect throttle free-
play or faulty switch
Poor gasoline or not
enough fuel getting to
engine
Spark plug wires may
be on wrong cylinder
S Install new spark plug(s). If engine still
fails to start, check for spark. If there's
no spark, SEE YOUR DEALER.
S Check the fuel tank level and fill with
correct fuel.
S Ice may be in the fuel line, filter or
pump. Add isopropyl alcohol to the
fuel system.
S Mixture is too lean. This indicates a ma-
jor engine problem that must be repaired
before the engine is run. SEE YOUR
DEALER.
S Replace the plug.
S SEE YOUR DEALER.
S SEE YOUR DEALER.
S Change plug(s).
S Dirt or ice may be in the fuel system
(deicer should be added to non-ethanol
fuel at all times for assurance against
fuel line icing).
S SEE YOUR DEALER
S Replace with fresh winter fuel.
S Reinstall spark plug wires to the corre-
sponding cylinder.