2006 YAMAHA BRUIN 250 engine

4-7 1. Light switch “//OFF”
2. Engine stop switch “/”
3. Start switch “”
4. Horn switch “”
1. Contacteur d’éclairage “//OFF”
2. Coupe-circuit du moteur “/”
3. Contacteur du démarreur “”
4. Contacteur de l’avertisseur “”
1. Interruptor de luces “//OFF”
2. Interruptor de paro del motor “/”
3. Interruptor de arranque “”
4. Interruptor de la bocina “”
EBU12040
Light switch “/ /OFF”
Set the switch to “” to turn on the low beam and
the taillight.
Set the switch to “” to turn on the high beam
and the taillight.
Set the switch to “OFF” to turn off all the lights.CAUTION:_ Do not use the headlights with the engine
turned off for more than thirty minutes. The
battery may discharge to the point that the
starter motor will not operate properly. If this
should happen, remove the battery and re-
charge it. _
EBU00059
Horn switch “”
Press the switch to sound the horn.
EE.book Page 7 Friday, May 27, 2005 5:00 PM

4-9 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
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 en-
gine will return to an idle any time the hand is re-
moved 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.
WARNING
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.
EE.book Page 9 Friday, May 27, 2005 5:00 PM

4-11 1. Locknut 2. Adjusting screw
a. No more than 12 mm
1. Contre-écrou 2. Vis de réglage
a. 12 mm maximum
1. Contratuerca 2. Tornillo de ajuste
a. 12 mm como máximo
EBU11980
Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum. Turning in the adjusting screw limits
the maximum engine power available and de-
creases the maximum speed of the ATV.
WARNING
_ Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do not
turn the adjusting screw out more than 12 mm
or the throttle cable could be damaged. Always
make sure the throttle lever free play is adjust-
ed to 3.0–5.0 mm. See page 8-53. _
EE.book Page 11 Friday, May 27, 2005 5:00 PM

4-17 1. Lock plate
1. Verrou
1. Placa de bloqueo
EBU00075
Parking brake
Use the parking brake when you have to start the
engine or park the machine, especially on a slope.
Apply the rear brake lever and push down the lock
plate to apply the parking brake. Squeeze the rear
brake lever to release the parking brake.
WARNING


Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is not
applied. This could cause loss of control or
a collision.


Always be sure you have released the
parking brake before you begin to ride. The
brake could overheat if you ride the ATV
without releasing the parking brake. You
could lose braking performance which
could cause an accident. You could also
wear out the brakes prematurely.
EE.book Page 17 Friday, May 27, 2005 5:00 PM

4-19 1. Shift pedal N. Neutral position
1. Pédale de sélection N. Point mort
1. Pedal del cambio N. Punto muerto
1. Drive select lever
1. Levier de présélection
1. Palanca de selección de gama
EBU00083
Shift pedal
This machine is equipped with a constant-mesh
5-speed transmission. The shift pedal is located
on the left side of the engine. Neutral is at the bot-
tom position.
EBU00085
Drive select lever
The drive select lever is used for driving the ma-
chine either forward or in reverse. Refer to page
6-11 for drive select lever operation.
EE.book Page 19 Friday, May 27, 2005 5:00 PM

4-21 1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
1. Fuel tank cap
1. Bouchon du réservoir de carburant
1. Tapón del depósito de combustible
EBU00591
Recoil starter
Firmly grasp the handle and pull slightly until en-
gagement can be felt. Then pull forcefully, being
careful not to pull the rope all the way out.
WARNING
Put the transmission in neutral and set the
parking brake before starting the engine or the
ATV could start to move unexpectedly, which
could cause an accident.
EBU00092
Fuel tank cap
Remove the fuel tank cap by turning it counter-
clockwise.
EE.book Page 21 Friday, May 27, 2005 5:00 PM

4-23
EBU00093
Fuel cock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has three positions.
OFF: With the lever in this position fuel will not
flow. Always turn the lever to this position
when the engine is not running.
ON: With the lever in this position, fuel flows to
the carburetor. Normal riding is done with
the lever in this position.
RES: This indicates reserve. If you run out of fuel
while riding, turn the lever to this position.
THEN FILL THE FUEL TANK AT THE
FIRST OPPORTUNITY. After refuelling, re-
turn the fuel cock lever to the “ON” position.
EE.book Page 23 Friday, May 27, 2005 5:00 PM

4-25 1. Starter (choke) “”
1. Starter (enrichisseur) “”
1. Starter (choke) “”
EBU00950
Starter (choke) “”
Starting a cold engine requires a richer air-fuel
mixture. A separate starter circuit supplies this
mixture.
Move in direction
a to turn on the starter (choke).
Move in direction
b to turn off the starter (choke).
Refer to “Starting a cold engine” for proper opera-
tion. (See page 6-3.)
EE.book Page 25 Friday, May 27, 2005 5:00 PM