Troubleshooting
84
TIP
Make sure that both the red (+) connecting
lead and the black (–) connecting lead are
seated securely in the lead holders.
Electric starter does not operate or
operates slowly
●
Engine stop switch is pushed in: Pull it out.
●
Faulty wire connections: Check connec-
tions or ask a Yamaha dealer to inspect.
●
Discharged battery: Charge battery or see
“Discharged battery” above.
●
Seized engine: Seizure is caused by poor
lubrication, inadequate fuel, or an air leak.
Ask a Yamaha dealer to inspect.
Engine power is low
●
Low coolant temperature indicator light is
flashing: Warm the engine up.
●
Faulty spark plugs: Clean or replace the
spark plugs.
●
Improper fuel flow: See “Engine turns over
but does not start–Fuel system” above.
●
Incorrect V-belt clutch settings for altitude
or conditions: Ask a Yamaha dealer to in-
spect.
Engine constantly backfires or mis-
fires
●
Faulty spark plugs: Replace the spark
plugs.
●
Clogged fuel system: See “Engine turns
over but does not start–Fuel system”
above.
●
Malfunctioning T.O.R.S.: See “Engine turns
over but does not start–Electrical system”
above.
Engine overheats
●
Insufficient coolant: Add coolant.
●
Air in cooling system: Bleed the cooling sys-
tem or ask a Yamaha dealer to inspect.
●
Leaking coolant: Ask a Yamaha dealer to
inspect.
Snowmobile does not move
●
Malfunctioning V-belt clutch: Ask a Yamaha
dealer to inspect.
●
Drive track does not move: Foreign object is
caught in the drive track, or slide runners
have melted to the slide metal due to lack of
lubrication.
●
Tight, loose, or broken drive chain: Ask a
Yamaha dealer to inspect.
V-belt twists
●
Improper V-belt: Replace with the correct V-
belt.
●
Incorrect V-belt clutch offset: Ask a Yamaha
dealer to inspect.
●
Loose or broken engine mount(s): Ask a
Yamaha dealer to inspect.
V-belt slips or becomes extremely hot
●
Oily or dirty V-belt or primary and second-
ary sheave assembly surfaces: Clean.
●
Problem with the driveline: See “V-belt
twists” above.
Engine does not upshift or downshift
properly or engages harshly
●
Worn or damaged V-belt: Replace the V-
belt or ask a Yamaha dealer to inspect.
●
Incorrect V-belt clutch settings for altitude
or conditions: Ask a Yamaha dealer to in-
spect.
●
Worn or sticking primary sheave assembly:
Ask a Yamaha dealer to inspect.
●
Worn or sticking secondary sheave assem-
bly: Ask a Yamaha dealer to inspect.
Noise or excessive vibration in drive
chain and sprockets
●
Broken V-belt clutch components: Ask a
Yamaha dealer to inspect.
●
Worn or damaged bearings: Ask a Yamaha
dealer to inspect.
●
Worn or damaged V-belt with flat spots: Re-
place.
●
Worn or damaged idler wheels or shafts:
Ask a Yamaha dealer to inspect.
U8HG10E0.book Page 84 Tuesday, May 18, 2010 5:39 PM
