fuel YAMAHA BANSHEE 350 2004 User Guide

6-25
EBU00212
Parking
When parking, stop the engine and shift into low
gear. Turn the fuel cock to “OFF” and apply the
parking brake.
1
1. Locked position
1. Verrouillé
1. Posición bloqueada

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
INITIAL EVERY
ITEM ROUTINE 1 3 6 6 1
month months months months year
Transmission9Replace oil.2222
9Check coolant leakage.
Cooling system9Repair if necessary.22222
9Replace coolant every 24 months.
9Check condition.
Spark plug9Adjust gap and clean.22222
9Replace if necessary.
Air filter element9Clean. Every 20–40 hours.
9Replace if necessary. (More often in wet or dusty areas)
* Carburetor9Check idle speed / starter operation.
2222
9Adjust if necessary.
* Crankcase breather9Check breather hose for cracks or damage.
222
system9Replace if necessary.
9Check for leakage.
* Exhaust system9Retighten if necessary.222
9Replace gasket(s) if necessary.
* Fuel line9Check fuel hose for cracks or damage.
222
9Replace if necessary.
Throttle operation9Inspect and adjust free play if necessary.22222
* Front and rear9Check operation/fluid leakage/see NOTE Page 8-9.
22222
brake operation9Correct if necessary.
* Front and rear9Check pad wear.
222
brake pads9Replace if necessary.

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.
w
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.

8-55
Changing the carburetor settings
Disassembly
1. Turn the fuel cock to the “OFF” position.
2. Turn out the drain screw of each carbure-
tor and drain the fuel.
3. Remove the seat.
4. Remove the radiator cover and side cover.
5. Disconnect the fuel hoses.
6. Remove the fuel tank.1
2
1. Radiator cover
2. Side cover
1. Cache du radiateur
2. Cache latéral
1. Cubierta del radiador
2. Cubierta lateral

8-65
7. Tighten the joint screws of each carbure-
tor.
Throttle cable adjustment
After the jet needle clip positions are changed,
throttle cable adjustment may be necessary.
1. Move the throttle lever a few times.
2. Push the throttle lever forward until it stops
and hold it in this position.
3. Check through the window of each carbu-
retor to see if the punch mark on the throt-
tle valve is at the specified position.
4. If not, loosen the locknuts and turn the
adjusters until proper position is obtained.
5. Move the throttle lever a few times and
recheck the position.
6. Install the fuel tank, side cover, radiator
cover and air filter case cover.
7. Reconnect the fuel hoses.
8. Install the seat.
a
wq
a. Specified position : 0–1mm
a. Position spésifiée : 0 à 1mm
a. Posición especificada : 0–1mm
1. Locknut (×2) 2. Adjuster (×2)
1. Contre-écrou (×2) 2. Dispositif de réglage (×2)
1. Tuerca de bloqueo (×2) 2. Tensor (×2)

8-113
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid
inspection before shipment from the factory,
trouble may occur during operation.
Any problem in the fuel, compression, or ignition
systems can cause poor starting and loss of
power. The troubleshooting chart describes a
quick, easy procedure for making checks. If your
machine requires any repair, take it to a Yama-
ha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to
properly service your machine. Use only gen-
uine Yamaha parts on your machine. Imitation
parts may look like Yamaha parts, but they are
often inferior. Consequently, they have a shorter
service life and can lead to expensive repair
bills.

8-115
w
Do not smoke when checking the fuel sys-
tem. Fuel can ignite or explode, causing
severe injury or property damage. Make sure
there are no open flames or sparks in the
area, including pilot lights from water
heaters or furnaces.

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

9-7
EBU00529
B. STORAGE
Long term storage (60 days or more) of your
machine will require some preventive proce-
dures to guard against deterioration. After thor-
oughly cleaning the machine, prepare for stor-
age as follows:
1. Drain the fuel tank, fuel lines and carbure-
tor float bowls.
2. Remove the spark plugs, pour about one
tablespoon of SAE 10W30 or 20W40
motor oil in the spark plug holes and rein-
stall the spark plugs. Ground the spark
plug wires and turn the engine over several
times to coat the cylinder walls with oil.
3. Clean the drive chain thoroughly and lubri-
cate it. (See page 8-95 for details.)
Reinstall the chain or store it in a plastic
bag tied to frame for safekeeping.
4. Lubricate all control cables.

10-1
Model YFZ350
Dimensions:
Overall length 1,855 mm
Overall width 1,100 mm
Overall height 1,080 mm
Seat height 800 mm
Wheelbase 1,280 mm
Minimum ground clearance 135 mm
Minimum turning radius 3,600 mm
Basic weight:
With oil and full fuel tank 187 kg
Engine:
Engine type Liquid-cooled 2-stroke
Cylinder arrangement Forward-inclined parallel 2-cylinder
Displacement 347 cm
3
Bore× stroke 64 ×54 mm
Compression ratio 6.5 : 1
Starting system Kick starter
Lubrication system Premix
EBU00428
SPECIFICATIONS