light YAMAHA WARRIOR 350 2003 User Guide

5-1
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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
BrakeCheck operation, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5 ~ 5-7,
8-39 ~ 8-49
ClutchCheck operation, condition and lever free play. 8-57
Parking brakeCheck operation, condition and cable free play. 8-51 ~ 8-53
FuelCheck fuel level.
Fill with fuel if necessary.5-9 ~ 5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13 ~ 5-15,
8-15 ~ 8-23
Drive chainCheck chain slack and condition.
Adjust if necessary.5-15, 8-59 ~ 8-63
ThrottleCheck for proper throttle cable operation and free play. 5-17, 8-37
Wheels and tiresCheck tire pressure, wear and damage.5-19 ~ 5-25,
8-71 ~ 8-73
Fittings and FastenersCheck all fittings and fasteners. 5-17
LightsCheck for proper operation. 5-17, 8-85 ~ 8-95
BatteryCheck fluid level.
Fill with distilled water if necessary.5-19, 8-75 ~ 8-81
U5NF61.book Page 1 Wednesday, June 13, 2001 5:18 PM

5-17
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Throttle lever
Check to see that the throttle lever operates cor-
rectly. It must open smoothly and spring back to
idle position when released. Repair as necessary
for proper operation.
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Fittings and Fasteners
Always check the tightness of chassis fittings and
fasteners before a ride. Take the machine to a
Yamaha dealer or refer to the Service Manual for
correct tightening torque.
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Lights
Check the headlights and tail/brake light to make
sure they are in working condition. Repair as nec-
essary for proper operation.
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Switches
Check the operation of the light switch, engine
stop switch and any other switches. Repair as nec-
essary for proper operation.
U5NF61.book Page 17 Wednesday, June 13, 2001 5:18 PM

6-5 a. Starter (choke) 1. Fully open
2. Half open 3. Closed
a. Starter (enrichisseur) 1. Complètement ouvert
2. Mi-ouvert 3. Fermé
a. Starter (choke) 1. Abre completamente
2. Semiabierto 3. Cerrado
NOTE:_ This model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions.

When the transmission is in neutral. At this
time the neutral indicator light should come on.
If the light does not come on, ask a Yamaha
dealer to inspect it.


When the clutch is disengaged with the trans-
mission and drive select lever in any position.
However, it is recommended to shift into neu-
tral before starting the engine.
_5. Use the starter (choke) in reference to the fig-
ure:
Position
1: Cold engine start-ambient tempera-
ture below 5°C.
Position
2: Cold engine start-ambient tempera-
ture at 0°C ~ 30°C and warming up
position.
Position
3: Cold engine start- ambient tempera-
ture above 25°C and warm engine
start position.
U5NF61.book Page 5 Wednesday, June 13, 2001 5:18 PM

6-9
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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.
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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 en-
gine 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. Other-
wise, the engine will misfire, preventing normal op-
eration.
U5NF61.book Page 9 Wednesday, June 13, 2001 5:18 PM

6-11 1. Drive select lever
2. Knob
3. For forward drive
4. For reverse drive
1. Levier de présélection
2. Bouton
3. Conduite en marche avant
4. Conduite en marche arrière
1. Palanca de selección de gama
2. Botón
3. Para marcha adelante
4. Para marcha atrás
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Drive select lever operation and reverse driv-
ingCAUTION:
Before shifting, stop the machine and return
the throttle lever to its closed position. Other-
wise the transmission may be damaged.NOTE:When shifting into reverse, the clutch must be dis-
engaged.1. Bring the machine to a complete stop and re-
turn the throttle lever to the closed position.
2. Pull in the clutch lever to disengage the
clutch.
3. Apply the rear brake pedal.
4. While pulling the knob, move the drive select
lever toward the rear until it completely stops.NOTE:When in reverse, the reverse indicator light should
be on. If the light does not come on, ask a Yamaha
dealer to inspect the machine.
U5NF61.book Page 11 Wednesday, June 13, 2001 5:18 PM

6-15 1. Shift pedal N. Neutral position
1. Pédale de sélection N. Point mort
1. Pedal del cambio N. Posición de punto muerto
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Shifting
This model has a 6-speed forward and 1-speed re-
verse transmission. The transmission allows you
to control the amount of power you have available
at a given speed or for starting, accelerating,
climbing hills, etc. To shift into neutral, return the
throttle lever to its original position, apply the
clutch and repeatedly depress the shift pedal until
it stops. When it stops, it will be in first gear. Raise
the pedal slightly to neutral.CAUTION:_

Do not coast for long periods with the en-
gine off, and do not tow the machine a long
distance. Even in neutral position, the
transmission is only properly lubricated
when the engine is running. Inadequate lu-
brication may cause damage.


Always use the clutch when changing
gears. The engine, transmission and driv-
etrain are not designed to withstand the
shock of forced shifting and can be dam-
aged by shifting without the clutch.
_
U5NF61.book Page 15 Wednesday, June 13, 2001 5:18 PM

7-41 1. Lean towards inside of turn.
2. Support your weight on the outer footboard.
1. Se pencher vers l’intérieur du virage.
2. Faire reposer son poids sur le repose-pied externe.
1. Inclínese hacia el interior del giro.
2. Descanse su peso en el descansapie externo.
As you approach a curve, slow down and begin to
turn the handlebars in the desired direction. As
you do so, put your weight on the footboard to the
outside of the turn (opposite your desired direc-
tion) and lean your upper body into the turn. Use
the throttle to maintain an even speed through the
turn. This maneuver will let the wheel on the inside
of the turn slip slightly, allowing the ATV to make
the turn properly.
This procedure should be practiced at slow speed
many times in a large off-road area with no obsta-
cles. If an incorrect technique is used, your ATV
may continue to go straight. If the ATV doesn’t
turn, come to a stop and then practice the proce-
dure again. If the riding surface is slippery or loose,
it may help to position more of your weight over the
front wheels by moving forward on the seat. Once
you have learned this technique you should be
able to perform it at higher speeds or in tighter
curves.
U5NF61.book Page 41 Wednesday, June 13, 2001 5:18 PM

7-59
CROSSING A SLOPE
Traversing a sloping surface on your ATV requires
you to properly position your weight to maintain
proper balance. Be sure that you have learned the
basic riding skills on flat ground before attempting
to cross a sloping surface. Avoid slopes with slip-
pery surfaces or rough terrain that may upset your
balance.
As you travel across a slope, lean your body in the
uphill direction. It may be necessary to correct the
steering when riding on loose surfaces by pointing
the front wheels slightly uphill. When riding on
slopes be sure not to make sharp turns either up or
down hill.
U5NF61.book Page 59 Wednesday, June 13, 2001 5:18 PM

8-23 1. Oil gallery bolt
1. Boulon de rampe de graissage
1. Perno del conducto de aceite
Oil pressure check
1. Put a cloth around the cylinder.
2. Slightly loosen the oil gallery bolt in the cylin-
der head.
3. Start the engine and keep it idling until oil be-
gins to seep from the oil gallery. If no oil
comes out after one minute, turn the engine
off so it will not seize and find the cause.
4. Start the engine, and then check the oil pres-
sure.
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·kgf)
U5NF61.book Page 23 Wednesday, June 13, 2001 5:18 PM

8-55 1. Rear brake light switch
2. Adjusting nut
1. Contacteur de feu stop
2.Écrou de réglage
1. Interruptor de la luz de freno trasero
2. Tuerca de ajuste
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Adjusting the rear brake light switch
The rear brake light switch, which is activated by
the brake pedal and brake lever, is properly adjust-
ed when the brake light comes on just before brak-
ing takes effect. If necessary, adjust the brake light
switch as follows.
Turn the adjusting nut while holding the rear brake
light switch in place. To make the brake light come
on earlier, turn the adjusting nut in direction
a. To
make the brake light come on later, turn the adjust-
ing nut in direction
b.
U5NF61.book Page 55 Wednesday, June 13, 2001 5:18 PM