Ski-Doo 440 - Troubleshooting - Performance Issues; Starting System and Acceleration Issues; Speed and Backfire Issues

Symptoms
Engine will
not start (electric
model only)
Note: If
failure is in
starting sys-
tem, engine will
start
manually
Engine lacks
acceleration
or power
Engine
continually
backfires
Snowmobile
cannot reach
full speed
26
Check for loose or corroded battery and starter connections. Tighten and clean if
necessary, also check fuse located
on red wire leading from rectifier to starter. Try
to restart engine electrically.
If engine still does not start, check item 2.
Check condition of battery by turning lights ON. If lights are dim or out, battery
may
be discharged or defective. Contact your dealer to charge or replace.
If wire connections are tight and' fuse and battery are all in working order, most
probable cause of trouble
is defective starter. Contact your dealer for repair.
Change your spark plug. Fouled spark plug may
be cleaned, regapped and tested
by your dealer. (See Spark Plug, Maintenance Section).
Remove and clean fuel filter. Change filter cartridge if necessary. Check fuel line
condition and connections. Check cleanliness of fuel tank. Clean if necessary.
Readjust the carburetor.
If the trouble persists, contact your dealer.
First check items 2 and 3 of
"Engine turns over but fails to start or starts with
difficulty",
If the ignition system still seems defective, contact your dealer.
able to
s, contact your de
Check track tension and alignment. Readjust to specifications. (See Maintenance
Section).
Check items 1 to 5 of
"Engine lacks acceleration or power".
I