2005 YAMAHA BRUIN 250 lock

8-53 1. Locknut 2. Adjusting bolt
a. Throttle lever free play
1. Contre-écrou 2. Boulon de réglage
a. Jeu du levier d’accélération
1. Contratuerca 2. Perno de ajuste
a. Juego libre de la palanca del acelerador
EBU00303
Valve clearance adjustment
The correct valve clearance changes with use, re-
sulting in improper fuel/air supply or engine noise.
To prevent this, the valve clearance must be ad-
justed regularly. This adjustment however, should
be left to a professional Yamaha service techni-
cian.
EBU00307
Throttle lever adjustmentNOTE:Adjust the engine idling speed before adjusting the
throttle lever free play.1. Loosen the locknut.
2. Turn the adjusting bolt until the throttle lever
free play is 3.0–5.0 mm.
3. Tighten the locknut.
U1P060.book Page 53 Monday, August 2, 2004 12:19 PM

8-61

Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down.
EBU11860
Brake fluid replacement
Complete fluid replacement should be done only
by trained Yamaha service personnel. Have a
Yamaha dealer replace the following components
during periodic maintenance or when they are
damaged or leaking.

Replace the oil seals every two years.


Replace the brake hoses every four years.
U1P060.book Page 61 Monday, August 2, 2004 12:19 PM

8-65 1. Locknut (× 2) 2. Adjusting bolt
a. Brake pedal position
1. Contre-écrou (× 2) 2. Boulon de réglage
a. Position de la pédale de frein
1. Contratuerca (× 2) 2. Perno de ajuste
a. Posición del pedal del freno
EBU15442
Adjusting the brake pedal and rear brake lever
Adjusting the brake pedal height
1. Remove the footboard. (See page 8-21.)
2. Loosen the adjusting bolt locknuts.
3. Turn the adjusting bolt so that the top of the
brake pedal is positioned 43–53 mm above
the top of the footboard bracket.
4. Tighten the adjusting bolt locknuts.
U1P060.book Page 65 Monday, August 2, 2004 12:19 PM

8-69 1. Locknut 2. Adjusting bolt
1. Contre-écrou 2. Boulon de réglage
1. Contratuerca 2. Perno de ajuste
1. Adjusting nut (brake cable) 2. Lever
3. Pin a. Gap
1.Écrou de réglage (câble de frein) 2. Levier
3. Axe a. Jeu
1. Tuerca de ajuste (cable del freno) 2. Palanca
3. Pasador a. Separación
Adjusting the rear brake lever free play
1. Loosen the locknut and fully turn in the ad-
justing bolt at the brake lever.
2. Turn in the adjusting nut on brake cable to
provide a gap of 0–1 mm between the lever
and the pin.
U1P060.book Page 69 Monday, August 2, 2004 12:19 PM

8-71 1. Locknut 2. Adjusting bolt
a. Rear brake lever free play
1. Contre-écrou 2. Boulon de réglage
a. Jeu du levier de frein arrière
1. Contratuerca 2. Perno de ajuste
a. Juego de la palanca de freno trasero
3. Turn the adjusting bolt until free play at the
brake lever pivot is 5.0–7.0 mm.
4. Tighten the locknut.
5. Install the footboard.
WARNING
_ Operating with improperly serviced or adjust-
ed brakes could cause loss of braking ability,
which could lead to an accident.
After servicing:

Make sure the brakes operate smoothly
and that the free play is correct.


Make sure the brakes do not drag.
Replacement of brake components requires
professional knowledge. These procedures
should be performed by a Yamaha dealer.
_
U1P060.book Page 71 Monday, August 2, 2004 12:19 PM

8-75 1. Locknut 2. Adjusting bolt
a. Decrease b. Increase
1. Contre-écrou 2. Boulon de réglage
a. Réduire b. Augmenter
1. Contratuerca 2. Perno de ajuste
a. Reducir b. Incrementar
EBU15470
Clutch adjustment
1. Remove the footboard. (See page 8-21.)
2. Loosen the locknut.
3. Slowly turn the adjusting bolt counterclock-
wise until resistance is felt. Then, turn it
1/8 turn clockwise.
4. Tighten the locknut to specification.NOTE:_ Turn the adjusting bolt counterclockwise to de-
crease the clutch free play and turn it clockwise to
increase the free play. _5. Install the footboard. Tightening torque:
15 Nm (1.5 m·kgf)
U1P060.book Page 75 Monday, August 2, 2004 12:19 PM

8-95 1. Headlight bulb holder cover
1. Cache d’ampoule de phare
1. Cubierta de la bombilla del faro
1. Headlight bulb holder
1. Fixation d’ampoule
1. Portabombilla
EBU14680
Replacing a headlight bulb
If a headlight bulb burns out, replace it as follows.
1. Remove the bulb holder cover at the rear of
the headlight by pulling it off.
2. Remove the headlight bulb holder by turning
it counterclockwise.
3. Remove the defective bulb by unhooking the
headlight bulb holder tabs.
WARNING
_ A headlight bulb is hot when it is on and imme-
diately 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 touch-
es something flammable. _
U1P060.book Page 95 Monday, August 2, 2004 12:19 PM

8-97 1. Headlight bulb holder tab (× 2)
1. Languette de fixation d’ampoule de phare (× 2)
1. Lengüeta del portabombillas del faro (× 2)
1. Do not touch the glass part of the bulb.
1. Ne pas toucher le verre de l’ampoule.
1. No tocar la parte de cristal de la bombilla.
4. Insert a new headlight bulb into the bulb hold-
er, and then secure the bulb by hooking the
tabs onto the bulb.CAUTION:_ Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of the
bulb, and the bulb life will be adversely affect-
ed. Thoroughly clean off any dirt and finger-
prints on the headlight bulb using a cloth
moistened with alcohol or thinner. _5. Install the headlight bulb holder by turning it
clockwise.
6. Install the headlight bulb holder cover at the
rear of the headlight.
U1P060.book Page 97 Monday, August 2, 2004 12:19 PM