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8-67
EBU00302Idle speed adjustmentNOTE:
A diagnostic tachometer must be used for this
procedure.NOTE:
The throttle cables and carburetor synchroniza-
tion must be set properly before adjusting the
idle speed.
1. Adjust the pilot air screws.
8Turn in both pilot air screws until they
lightly seat.
8Turn out both pilot air screws to specifi-
cation. (Refer to the “Carburetor settings”
section.)
2. Remove the seat.
3. Start the engine and warm it up for a few
minutes at approximately 1,000 to 2,000
r/min.
q
1. Pilot air screw1. Vis d’air de ralenti1. Tornillo de aire piloto
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8-89
EBU00833Adjusting the rear brake light switch
The rear brake light switch, which is activated by
the brake pedal and brake lever, is properly
adjusted when the brake light comes on just
before braking 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 adjusting nut in direction b.
qa
b
w
1. Rear brake light switch
2. Adjusting nut1. Contacteur de feu stop sur frein arrière
2.Écrou de réglage1. Interruptor de la luz de freno trasero
2. Tuerca de ajuste
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EBU00646Replacing the headlight bulb
If the headlight bulb burns out, replace the bulb
as follows:
1. Remove the screws holding the headlight
unit assembly to the headlight body.
2. Remove the bulb holder cover, turn the
bulb holder counterclockwise and remove
the defective bulb.wThe headlight bulb is hot when it is on and
immediately after it is turned off. Wait for the
bulb to cool before touching or removing it.
You can be burned, or a fire could start if the
bulb touches something flammable.
3. Put a new bulb into position and secure it
in place with the bulb holder.
4. Install the bulb holder cover.
q
1. Screw 1. Vis 1. Tornillo
e qw
1. Bulb holder caver 2. Bulb holder
3. Reflector1. Cache de la douille d’ampoule 2. Douille d’ampoule
3. Réflecteur1. Cubierta del portabombillas 2. Portabombillas
3. Reflector
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8-109
cCMake sure the bulb holder cover is securely
fitted over the bulb holder and seated
against the reflector.
5. Install the headlight unit assembly.
Adjust the headlight beam if necessary.
EBU00409Headlight beam adjustmentcCIt is advisable to have a Yamaha dealer make
this adjustment.
1. Vertical adjustment:
To raise the beam, turn the adjusting
screw clockwise.
To lower the beam, turn the screw counter-
clockwise.
q
1. Adjusting screw1. Vis de réglage1. Tornillo de ajuste
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EBU00861Tail/brake light bulb replacement
1. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.
2. Remove the defective bulb from the bulb
holder by pushing it inward and turning it
counterclockwise.
3. Install a new bulb in the bulb holder by
pushing it inward and turning it clockwise.
4. Install the bulb holder (together with the
bulb).
qq
w
1. Bulb holder1. Fixation d’ampoule1. Portabombillas
1. Bulb holder 2. Bulb1. Fixation d’ampoule 2. Ampoule1. Portabombillas 2. Bombilla
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wDo 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.
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9-9
5. Block up the frame to raise all wheels off
the ground.
6. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
7. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber
parts or the seat cover.NOTE:
Make any necessary repairs before storing the
machine.
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10-5
Model YFZ350
Suspension:
Front suspension Double wishbone
Rear suspension Swingarm (link suspension)
Shock absorber:
Front shock absorber Coil spring/Oil damperRear shock absorber Coil spring/Gas-oil damper
Wheel travel:
Front wheel travel 230 mmRear wheel travel 220 mm
Electrical:
Ignition system C.D.I.Generator system C.D.I. magnetoHeadlight type: Krypton bulb
Bulb voltage, wattage ×quantity:
Headlight 12V, 30 W/30 W ×2
Tail/brake light 12V, 5 W/21 W ×1
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