check engine YAMAHA WARRIOR 350 2001 User Guide

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CAUTION:

Be sure no foreign material enters the crank-
case.
10. Warm up the engine for several minutes
at idle speed. Check for oil leakage while
warming up.
CAUTION:

If oil leakage is found, stop the engine immedi-
ately and check for the cause.
Recommended oil:
See page 10-2.
Oil quantity:
Periodic oil change:
2.4L
With oil filter replacement:
2.5 L
Total amount:
3.2 L

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Oil pressure check
1. Put a cloth around the cylinder.
2. Slightly loosen the oil gallery bolt in the
cylinder head.
3. Start the engine and keep it idling until oil
begins to seep from the oil gallery. If no oil
comes out after one minute, turn the en-
gine off so it will not seize and find the
cause.
4. Start the engine, and then check the oil
pressure.
5. After checking, tighten the oil gallery bolt
to the specified torque.CAUTION:Be sure to check the oil pressure after replac-ing the engine oil. Tightening torque:
Oil gallery bolt:
7 Nm (0.7 m·kg)
1. Oil gallery bolt
1. Boulon de rampe de graissage
1. Perno del conducto de aceite

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EBU00291
Air filter cleaningNOTE:There is a check hose at the bottom of the air
filter case. If dust or water collects in this hose,
empty the hose and clean the air filter elementand air filter case.
1. Remove the seat.
2. Remove the air filter case cover.
3. Remove the air filter element, and sepa-
rate it from the guide.
4. Wash the element gently but thoroughly
in solvent.
WARNING
Always use parts cleaning solvent to clean the
air filter element. Never use low flash point sol-
vents or gasoline to clean the air filter elementbecause the engine could catch fire or explode.
5. Squeeze the excess solvent out of the fil-
ter and let it dry.CAUTION:Do not twist the filter element when squeez-ing it.
1. Air filter case cover
1. Couvercle du boîtier de filtre à air
1. Tapa de la caja del filtro1. Check hose
1. Flexible de contrôle
1. Manguito de comprobación

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6. Inspect the element. If damaged, replace
it.
7. Apply SAE 10W30 motor oil to the ele-
ment.NOTE:The element should be wet but not dripping.
8. Apply all-purpose grease to the air filter
element seat.
9. Reinstall the element to the element
guide.
10. Reinstall the element assembly and parts
removed for access.NOTE:The air filter element should be cleaned every
20 ~ 40 hours. It should be cleaned and lubri-
cated more often if the machine is operated in
extremely dusty areas. Each time filter element
maintenance is performed, check the air inlet
to the filter case for obstructions. Check the air
cleaner rubber joint to the carburetor and man-
ifold fittings for an airtight seal. Tighten all fit-
tings securely to avoid the possibility ofunfiltered air entering the engine.
1. Unlock
1. Déverrouiller
1. Levántelo1. Element retaining plate 2. Guide
3. Air filter element
1. Plaquette de retenue d’élément 2. Guide
3. Élément du filtre à air
1. Element plate 2. Guía
3. Elemento filtrante

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EBU00440
Troubleshooting chart1. Fuel
Check if there is fuel
in the fuel tank.There is fuel.Turn the fuel
cock to “OFF”.No fuel.Fuel cock
clogged.
Clean fuel
cock. Some fuel.Turn the fuel
cock to “RES”.Restart engine.
No fuel.Supply fuel.
2. Compression
Use the electric starter
to see if there is
compression.There is compression.
Compression normal.
No compression.Ask a Yamaha dealer to
inspect.
3. Ignition
Remove plug and
check electrodes.WetWipe clean with dry cloth.
DryAttach plug cap and
ground to chassis.Use the
electric starter.Spark good.Ignition system
normal.
Spark weak.
Adjust plug gap
or replace plug. No spark.
Ask a Yamaha dealer to
inspect. 4. Battery
Use the electric
starter.Engine turns over
quickly.Battery good.
Engine turns over
slowly.Check fluid, recharge,
check connections.Check fuel
flow.
Turn the fuel
cock to “ON”.
Remove the
fuel pipe.