2002 YAMAHA BANSHEE 350 check engine

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EBU00300Carburetor settings
In extremely cold weather, it is necessary to
change the carburetor settings to maintain opti-
mum engine performance and to prevent engine
damage.w8
Improperly servicing or adjusting the carbu-
retors could cause malfunction with the pos-
sibility of an accident or the carburetors
could leak fuel, which would be a fire hazard.
8
Carburetor adjustments should only be per-
formed by a Yamaha dealer. Do not attempt
to perform these procedures unless you
have mechanical knowledge and the neces-
sary tools.
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Do not perform this procedure while the
engine is hot. Place a rag under each carbu-
retor to catch any fuel. Wipe up any spilled
fuel completely.
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After servicing the carburetors, always check
throttle operation before operating the ATV
to make sure it is working correctly.
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EBU00440Troubleshooting chartStarting problems or poor engine performance
Check fuel flow
1. FuelCheck if there is
fuel in the fuel
tank2. CompressionKick the kick starter
to see if there is
compression3. IgnitionRemove plugs and
check electrodes
Wet
Wipe clean with
dry cloth
Dry
Attach plug cap and
ground to chassis
Kick the kick
starter strongly
Spark weakSpark good
Ignition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust plug gap or
replace plug(s)
There is compresson
Compression normalAsk a Yamaha dealer to inspect
No compression
There is fuel
Turn the fuel
cock to “OFF”Remove the
fuel pipe
No fuel
Fuel cock clogged
Some fuel
Turn the fuel
cock to “RES”
Restart engine
No fuel
Supply fuel
Clean fuel cock
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Engine overheatingWait until the
engine has cooled.
Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer
to inspect and repair
the cooling system.Add coolant.
(See NOTE.)
Restart the engine. If the engine overheats
again, ask a Yamaha dealer to inspect and
repair the cooling system.
NOTE:If it is difficult to get recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.wWait for the engine and radiator to cool before removing the radiator cap. You could be burned
by hot fluid and steam blown out under pressure. Always put a thick rag over the cap when
opening. Allow any remaining pressure to escape before completely removing the cap.
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