service YAMAHA BIG BEAR PRO 400 2005 Owners Manual

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INTRODUCTION
Félicitations pour l’achat du YFM400FP/YFM400FW
de Yamaha. Ce modèle représente le fruit de nombreuses
années d’expérience Yamaha dans la production de véhi-
cules de sport, de tourisme et de course. Ce véhicule per-
mettra à son pilote de pleinement apprécier la perfection
technique et la fiabilité qui ont fait de Yamaha un leader
dans ces domaines.
Ce manuel apporte une meilleure compréhension des ca-
ractéristiques et du fonctionnement du véhicule. Le ma-
nuel donne en outre des conseils importants relatifs à
la sécurité. Il informe sur les compétences et techni-
ques particulières indispensables au pilotage du véhi-
cule.
Ce manuel explique également les procédés d’ins-
pection et d’entretien élémentaires. Les concessionnaires
Yamaha sont au service de leur clientèle et répondront à
toute question concernant le fonctionnement ou l’entre-
tien de ce véhicule.
SBU00946
INTRODUCCIÓN
Le felicitamos por su compra de la Yamaha
YFM400FP/YFM400FW. Representa el resultado
de muchos años de experiencia de Yamaha en la
producción de máquinas deportivas, de turismo, y de
competición que marcan el ritmo de las carreras.
Con la compra de esta Yamaha, podrá apreciar el
alto grado de perfección técnica y fiabilidad que han
convertido a Yamaha en el líder de estos campos.
El presente manual le proporcionará un buen cono-
cimiento básico de las características y el manejo del
ATV.
También contiene indicaciones importan-
tes acerca de la seguridad y aporta información
sobre las técnicas y habilidades especiales ne-
cesarias para conducir el ATV, así como los pro-
cedimientos básicos de mantenimiento e inspección.
Si tiene alguna duda respecto al mantenimiento o
manejo del ATV, consulte a su concesionario
Yamaha.
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4-34
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Starter (enrichisseur) “”
La mise en marche à froid requiert un mélange air-carbu-
rant plus riche. C’est le starter qui remplit cette fonction
d’enrichissement du mélange.
Déplacer dans la direction a
pour mettre le starter (enri-
chisseur) en service.
Déplacer dans la direction b
pour mettre le starter (enri-
chisseur) hors service.
La marche à suivre correcte est décrite à la section “Mise
en marche d’un moteur froid”. (Pour plus de détails, voir
page 6-4.)
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Starter (choke) “”
Cuando el motor está frío, requiere una mezcla más
rica de combustible para arrancar. Esta mezcla se
suministra a través de un circuito separado, el circui-
to del “starter”.
Mueva en la dirección
a para conectar el starter
(choke).
Mueva en la dirección
b para desconectar el starter
(choke).
Consulte el apartado de “Arranque en frío del motor”
para ver la operación adecuada. (Consulte la página
6-4.)
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5-17
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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 all switches. Have a
Yamaha dealer repair as necessary for proper op-
eration.
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8-1
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1-PERIODIC MAINTENANCE AND
ADJUSTMENTPeriodic inspection, adjustment and lubrication will
keep your machine in the safest and most efficient
condition possible. Safety is an obligation of the
machine owner. The most important points of ma-
chine inspection, adjustment and lubrication are
explained on the following pages.
WARNING
Never service an engine while it is running.
Moving parts can catch clothing or parts of the
body, causing injury. Electrical components
can cause shocks or can start fires. Turn off
the engine when performing maintenance un-
less otherwise specified. Have a Yamaha deal-
er perform service if you are not familiar with
machine service.
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8-3 1. Owner’s manual
2. Low-pressure tire gauge
1. Manuel du propriétaire
2. Manomètre basse pression pour pneus
1. Manual del propietario
2. Manómetro de baja presión
1. Owner’s tool kit
1. Trousse à outils du propriétaire
1. Equipo de herramientas del propietario
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Owner’s manual and tool kit
You are recommended to put this owner’s manual
and low-pressure tire gauge in the vinyl bag and
always carry them in the storage box. Put the own-
er’s tool kit in the space under the seat. The ser-
vice information included in this manual is
intended to provide you, the owner, with the nec-
essary information for completing your own pre-
ventive maintenance and minor repairs. The tools
provided in the Owner’s tool kit are sufficient for
this purpose, except that a torque wrench is also
necessary to properly tighten nuts and bolts.NOTE:If you do not have a torque wrench available dur-
ing a service operation requiring one, take your
machine to a Yamaha dealer to check the torque
settings and adjust them as necessary.
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8-8
* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.Engine oil filter element
Replace.Engine oil strainer
Clean.Final gear oil
Check oil level/oil leakage.
Replace every 12 months.Differential gear oil
Front brake*Check operation/fluid leakage/see NOTE page 8-9.
Correct if necessary.Rear brake*Check operation.
Adjust if necessary.Clutch*Check operation.
Adjust if necessary.Drive select lever
safety system*Check operation.
Adjust if necessary.Wheels*Check balance/damage/runout.
Repair if necessary.Wheel bearing*Check bearing assemblies for looseness/damage.
Replace if damaged.Steering system*Check operation.
Replace if damaged.
Check toe-in.
Adjust if necessary.Axle boots*Check condition.
Replace if damaged.Fittings and fasteners*Check all chassis fittings and fasteners.
Correct if necessary.
ITEM ROUTINEWhichever
comes firstINITIAL EVERY
month136612
km
(mi)320
(200)1,200
(750)2,400
(1,500)2,400
(1,500)4,800
(3,000)
hours 20 75 150 150 300
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8-59 1. Locknut 2. Adjusting nut
1. Contre-écrou 2.Écrou de réglage
1. Contratuerca 2. Tuerca de ajuste
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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.
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Select lever safety system cable adjustment
The select lever safety system cable stretches
with use, resulting in improper function.
To prevent this, the cable must be adjusted regu-
larly. This adjustment, however, should be left to a
Yamaha dealer.
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8-67
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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.
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8-69 a. Front brake lever free play
a. Jeu du levier de frein avant
a. Juego de la palanca del freno delantero
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Front brake lever free play
The front brake lever should have a free play of
zero mm at the lever end. If not, have a Yamaha
dealer check the brake system.
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.


Make sure the brakes are not spongy. All
air must be bled from the brake system.
Replacement of brake components requires
professional knowledge. These procedures
should be performed by a Yamaha dealer.
_
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8-77 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 4.0–7.0 mm.
4. Tighten the locknut.
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.
_
U1C160.book Page 77 Wednesday, May 12, 2004 4:55 PM