check engine YAMAHA BANSHEE 350 2004 Owners Manual

LOCATION OF THE WARNING AND
SPECIFICATION LABELS .......................1-1
SAFETY INFORMATION .........................2-1
DESCRIPTION AND MACHINE
IDENTIFICATION.....................................3-1
Identification number records ...............3-3
Key identification number .....................3-5
Vehicle identification number ...............3-7
Model label ...........................................3-9
CONTROL FUNCTIONS .........................4-1
Main switch ...........................................4-1
Handlebar switches ..............................4-3
Throttle lever ........................................4-5
Throttle OverRide System ....................4-7
Speed limiter ........................................4-9
Clutch lever ........................................4-11
4
3
2
1Front brake lever ................................4-11
Brake pedal ........................................4-13
Parking brake .....................................4-13
Shift pedal ..........................................4-17
Kick starter .........................................4-17
Fuel tank cap ......................................4-19
Fuel cock ............................................4-19
Starter (choke) ....................................4-21
Seat ....................................................4-23
Front shock absorber adjustment .......4-25
Rear shock absorber adjustment .......4-29
PRE-OPERATION CHECKS ...................5-1
Front and rear brakes ...........................5-5
Fuel ....................................................5-11
Engine mixing oil ................................5-15
Transmission oil .................................5-17
Chain ..................................................5-21
Throttle lever ......................................5-21
5
EBU00015
CONTENTS

4-5
EBU00063
Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying
the throttle position. Because the throttle is
spring-loaded, the machine will decelerate, and
the engine will return to an idle any time the hand
is removed from the throttle lever.
Before starting the engine, check the throttle to
be sure it is operating smoothly. Make sure it
returns to the idle position as soon as the lever is
released.
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Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you
need to. This could cause an accident. Check
the operation of the throttle lever before you
start the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
q
1. Throttle lever
1. Levier d’accélération
1. Palanca del aceleración

6-9
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a
cold engine” section. The starter (choke) should
not be used. The throttle should be opened
slightly.
EBU00538
Warming up
To get maximum engine life, always warm up
the engine before starting off. Never accelerate
hard with a cold engine! To see whether or not
the engine is warm, check if it responds to the
throttle normally with the starter (choke) turned
off.
NOTE:
When the parking brake is used, engine speed
is limited to 2,300 r/min. Be sure the parking
brake is released before moving the throttle
lever. Otherwise, the engine will misfire, pre-
venting normal operation.

8-17
EBU01098
Transmission oil
Transmission oil measurement
1. Place the machine on a level surface.
2. Warm up the engine for several minutes,
and then stop it.
3. Remove the oil filler cap and wipe off the
dipstick with a clean rag. Insert the dipstick
in the filler hole without screwing it in.
NOTE:
Wait a few minutes until the oil level settles
before checking.
4. Remove the dipstick and inspect the oil
level.
5. The oil level should be between the maxi-
mum and minimum marks. If the level is
low, add oil to raise it to the proper level.
6. Install the oil filler cap.
q
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e
1. Dipstick
2. Maximum level mark 3. Minimum level mark
1. Jauge
2. Repère de niveau maximum 3. Repère de niveau minimum
1. Varilla de nivel
2. Marca de máximo 3. Marca de mínimo

q
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1. Maximum level mark
2. Minimum level mark
1. Repère maximum
2. Repère minimum
1. Marca de máximo
2. Marca de mínimo
8-23
7. Start the engine and warm up for a few
minutes. While warming up, check for oil
leakage. If oil leakage is found, stop the
engine immediately, and check for the
cause.
8. Check the oil level.
EBU01080
Cooling system
1. Check the coolant level in the coolant
reservoir when the engine is cold as the
coolant level will vary with engine temper-
ature. The coolant level should be
between the maximum and minimum
marks.

8-37
12. Run the engine several minutes. Stop the
engine, and then check the coolant level in
the radiator. If it is low, add more coolant
until it reaches the top of the radiator.
13. Fill the coolant reservoir with coolant up to
the maximum level.
14. Install the coolant reservoir cap and check
for coolant leakage.
NOTE:
If any leakage is found, ask a Yamaha dealer to
inspect the cooling system.
15. Install the radiator cover by installing the
bolts.

8-49
NOTE:
The air filter element should be cleaned every
20–40 hours. It should be cleaned and lubricat-
ed 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 mani-
fold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfil-
tered air entering the engine.
cC
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid engine wear and
possible engine damage. Additionally, opera-
tion without the filter element will affect car-
buretor jetting with subsequent poor perfor-
mance and possible engine overheating.

8-51
EBU00300
Carburetor settings
In extremely cold weather, it is necessary to
change the carburetor settings to maintain opti-
mum engine performance and to prevent engine
damage.
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8Improperly 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.
8Carburetor 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.
8Do 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.
8After servicing the carburetors, always check
throttle operation before operating the ATV
to make sure it is working correctly.

8-117
EBU00440
Troubleshooting chart
Starting problems or poor engine performance
Check fuel flow
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Kick the kick starter
to see if there is
compression
3. Ignition
Remove plugs and
check electrodes
WetWipe clean with
dry cloth
DryAttach plug cap and
ground to chassisKick the kick
starter stronglySpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust plug gap or
replace plug(s)
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is fuelTurn the fuel
cock to “OFF”
Remove the
fuel pipeNo fuelFuel cock clogged
Some fuelTurn the fuel
cock to “RES”Restart engine
No fuelSupply fuel
Clean fuel cock

8-118
Engine overheating
Wait 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.
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Wait 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.