coolant reservoir YAMAHA WR 250F 2005 Owners Manual

1 - 1
GEN
INFODESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1Clutch lever
2Hot starter lever
3Engine stop switch
4Trip meter
5Main switch
6Start switch
7Front brake lever
8Throttle grip
9Radiator cap
0Fuel tank cap
ATaillight
BKickstarter crank
CFuel tank
DHeadlight
ERadiator
FCoolant drain bolt
GRear brake pedal
HValve joint
IFuel cock
JCold starter knob
KAir cleaner
LDrive chain
MShift pedal
NOil dipstick
OFront fork
NOTE:The machine you have purchased may differ slightly
from those shown in the following.
Designs and specifications are subject to change with-
out notice.
1234
5
6
7
8
9 0
A
BCDE
F G
HIJK
L M
N O
RENSEIGNEMENTS GENERAUX
DESCRIPTION
1Levier d’embrayage
2Levier de démarrage à chaud
3Coupe-circuit du moteur
4Compteur journalier
5Contacteur à clé
6Contacteur du démarreur
7Levier de frein avant
8Poignée des gaz
9Bouchon du radiateur
0Bouchon de réservoir de carburant
AFeu arrière
BPédale de kick
CRéservoir de carburant
DPhare
ERadiateur
FBoulon de vidange du liquide de refroidissement
GPédale de frein arrière
HClapet de reniflard
IRobinet de carburant
JCommande de départ à froid
KFiltre à air
LChaîne de transmission
MSélecteur
NJauge d’huile
OFourche
N.B.:
Votre moto diffère peut-être partiellement de celle montrée
sur ces photos.
La conception et les caractéristiques peuvent être modifiées
sans préavis.
DESCRIPTION

MAINTENANCE SPECIFICATIONS
2 - 16
SPEC
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race. Headlight stay (lower) and lower bracket M8 × 1.25 2 15 1.5 11
Headlight body and headlight unit M6 × 1.0 2 7 0.7 5.1
Headlight (left and right) M6 × 1.0 2 7 0.7 5.1
Headlight (lower) M6 × 1.0 1 7 0.7 5.1
Taillight M6 × 1.0 3 4 0.4 2.9
Taillight lead clamp and rear fender M4 × 1.59 2 0.5 0.05 0.36
Coolant reservoir M6 × 1.0 2 7 0.7 5.1
Sidestand bracket and frame M10 × 1.25 2 66 6.6 48
Drive chain stopper and sidestand bracket M6 × 1.0 1 7 0.7 5.1
Sidestand M8 × 1.25 1 20 2.0 14 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb

SPEC
2 - 97
CABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1Fuel tank breather hose
2Oil tank breather hose
3Clamp
4Diode
5Wire harness
6Hot starter cable
7Throttle position sensor lead
8Neutral switch lead
9Oil hose
0Hose guideAAC magneto lead
BCylinder head breather hose
CStarter motor lead
DClutch cable
ERadiator hose 1
FCable guide
GRadiator pipe (radiator hose 4)
HNegative battery lead
IBrake hose
JCarburetor breather hoseKCarburetor overflow hose
LCoolant reservoir breather hose
ÈInsert the fuel tank breather hose into
the hole in the steering stem cap.
ÉPass the oil tank breather hose on the
outside of the AC magneto lead, neu-
tral switch lead, wire harness, starter
motor lead, negative battery lead and
cylinder head breather hose.
B
BA
B-B
A
Ö3 ×BØC
Ô0
Õ3 G
D
EH
ÙF ÙF
I0ÛF
Ü30
1
È
3
Ê
4
3
Ë
3
Ì5
63
Í
3
Î3
Ï
Ð
Ò Ú3
Ñ
7
9 3
Ó 0
ÔÝ JJ
KL
8 A2
É
9
8

SPEC
2 - 99
CABLE ROUTING DIAGRAM
ÊFasten the diode (at the white tape), rectifier/regulator lead,
CDI unit lead (at the protecting tube) and AC magneto coupler
(connected to the CDI unit).
ËFasten the wire harness, starter motor lead and negative bat-
tery lead so that the plastic locking tie ends do not contact the
ignition coil lead.
ÌFasten the wire harness, rectifier/regulator lead, coolant reser-
voir hose, hot starter cable, negative battery lead and starter
motor lead.
ÍFasten the wire harness, negative battery lead, starter motor
lead, rectifier/regulator lead and coolant reservoir hose at the
white tape for the negative battery lead.
ÎFasten the wire harness at its white tape.ÏFasten the wire harness, throttle position sensor lead (in the
wire harness), starter motor lead and negative battery lead.
ÐMake sure that the throttle position sensor coupler does not go
outside the chassis.
ÑFasten the throttle position sensor lead.
ÒPass the carburetor breather hoses, carburetor overflow hose
and coolant reservoir breather hose between the connecting
rod and cross tube (frame).
ÓFasten the neutral switch lead and oil hose together with the
plastic locking ties and cut off the tie ends.
ÔPass the cylinder head breather hose through the hose guides.
ÕFasten the neutral switch lead.
B
BA
B-B
A
Ö3 ×BØC
Ô0
Õ3 G
D
EH
ÙF ÙF
I0ÛF
Ü30
1
È
3
Ê
4
3
Ë
3
Ì5
63
Í
3
Î3
Ï
Ð
Ò Ú3
Ñ
7
9 3
Ó 0
ÔÝ JJ
KL
8 A2
É
9
8

SPEC
2 - 101
CABLE ROUTING DIAGRAM
ÖFasten the neutral switch lead and AC magneto lead.
×Pass the cylinder head breather hose on the inside of the radi-
ator hose 1 and on the outside of the radiator pipe (radiator
hose 4). Make sure that the cylinder head breather hose does
not go forward of the chassis.
ØPass the starter motor lead in front of the radiator hose 4.
ÙPass the clutch cable through the cable guides.
ÚPass the wire harness on the outside of the neutral switch lead
and AC magneto lead.
ÛPass the wire harness and clutch cable through the cable
guide.ÜFasten the AC magneto lead and neutral switch lead to the
cable guide at their protecting tube.
ÝPass the carburetor breather hoses, carburetor overflow hose
and coolant reservoir breather hose so that the hoses do not
contact the rear shock absorber.
B
BA
B-B
A
Ö3 ×BØC
Ô0
Õ3 G
D
EH
ÙF ÙF
I0ÛF
Ü30
1
È
3
Ê
4
3
Ë
3
Ì5
63
Í
3
Î3
Ï
Ð
Ò Ú3
Ñ
7
9 3
Ó 0
ÔÝ JJ
KL
8 A2
É
9
8

SPEC
2 - 103
CABLE ROUTING DIAGRAM
1Hot starter cable
2Throttle cable (return)
3Throttle cable (pull)
4Cable guide
5Ignition coil
6Coolant reservoir breather hose
7Rectifier/regulator
8Coolant reservoir hose
9Rectifier/regulator lead
0Clamp
ACDI unit lead
BCDI unit
CCDI unit band
DCDI unit stayÈPass the throttle cables and hot starter cable through the cable
guides.
ÉPass the throttle cables and hot starter cable between the radi-
ator and frame, then under the radiator mounting boss.
ÊPass the throttle cables on the outside of the ignition coil.
ËPass the carburetor breather hose (of the throttle cable cover)
through the hose holder.
ÌFasten the coolant reservoir breather hose and carburetor
breather hoses together.
ÍFasten the rectifier/regulator lead.
50 ~ 70 mm
(1.97 ~ 2.76 in)
A ÏD
B
B
B
C
8
Î0
Í0A
9BC
1
32
4
È
É
Ê
5
6 7
Ë Ì
0
79
Ð Í

SPEC
2 - 109
CABLE ROUTING DIAGRAM
1Starter motor lead
2Negative battery lead
3Wire harness
4Clamp
5Taillight lead
6Coolant reservoir breather hose
7Coolant reservoir hose
8Positive battery lead
9Starting circuit cut-off relay
0BatteryÈPosition the starter motor lead, negative battery lead and wire
harness in the tank damper slit.
ÉFasten the wire harness.
ÊFasten the coolant reservoir breather hose and coolant reser-
voir hose.
ËDo not allow the taillight lead to slacken.
ÌPass the coolant reservoir hose on the outside of the coolant
reservoir breather hose.
Zero ~ 10 mm
(Zero ~ 0.39 in)
9
0 1
2 368
Ì 4
Ê
74
Ê4
Ê
4
Ê
5
Ë
4
É
3
È
1 2
6
7

3 - 23
INSP
ADJ
COOLANT REPLACEMENT
WARNING
Do not remove the radiator cap
when the engine is hot.
CAUTION:
Take care so that coolant does not
splash on painted surfaces. If it
splashes, wash it away with water.
1. Place a container under the
engine.
2. Remove:
Seat
Refer to “SEAT, FUEL TANK
AND SIDE COVERS” section
in the CHAPTER 4.
3. Disconnect:
Coolant reservoir hose
1
Drain the coolant completely.
4. Connect:
Coolant reservoir hose
LOWFULLCOOLANT1
5. Remove:
Engine guard
1
Coolant drain bolt
2
6. Remove:
Radiator cap
Drain the coolant completely.
7. Clean:
Cooling system
Thoroughly flush the cooling
system with clean tap water.
8. Install:
Copper washer
Coolant drain bolt
Engine guard
Bolt [engine guard (front)]
Bolt [engine guard (rear)]
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
T R..34 Nm (3.4 m · kg, 24 ft · lb)
T R..23 Nm (2.3 m · kg, 17 ft · lb)
New
CHANGEMENT DU LIQUIDE DE
REFROIDISSEMENT
AVERTISSEMENT
Ne jamais enlever le bouchon de
radiateur quand le moteur est chaud.
ATTENTION:
Veiller à ne pas laisser échapper de
liquide de refroidissement sur les sur-
faces peintes. Si cela devait se pro-
duire, rincer à l’eau.
1. Placer un récipient sous le moteur.
2. Déposer:
Selle
Se reporter à la section “SELLE,
RESERVOIR DE CARBURANT
ET CACHES LATERAUX” au
CHAPITRE 4.
3. Déconnecter:
Durit du vase d’expansion 1
Vidanger entièrement le liquide
de refroidissement.
4. Connecter:
Durit du vase d’expansion
5. Déposer:
Protège-carter 1
Boulon de vidange du liquide de
refroidissement 2
6. Déposer:
Bouchon du radiateur
Vidanger entièrement le liquide
de refroidissement.
7. Nettoyer:
Circuit de refroidissement
Rincer soigneusement le circuit
de refroidissement à l’eau claire.
8. Monter:
Rondelle en cuivre
Boulon de vidange du liquide de
refroidissement
Protège-carter
Boulon [protège-carter (avant)]
Boulon [protège-carter (arrière)]
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
T R..34 Nm (3,4 m · kg, 24 ft · lb)
T R..23 Nm (2,3 m · kg, 17 ft · lb)
New
ENGINE
MOTEUR

3 - 25
INSP
ADJ
9. Fill:
Radiator
Engine
To specified level.
CAUTION:
Do not mix more than one type
of ethylene glycol antifreeze
containing corrosion inhibitors
for aluminum engine.
Do not use water containing
impurities or oil.
Recommended coolant:
High quality ethylene
glycol anti-freeze con-
taining anti-corrosion
for aluminum engine
Coolant 1 and water
(soft water) 2 mixing
ratio:
50%/50%
Coolant capacity:
0.9 L
(0.79 Imp qt,
0.95 US qt)
Handling notes of coolant:
The coolant is harmful so it should
be handled with special care.
WARNING
When coolant splashes to
your eye.
Thoroughly wash your eye
with water and see your doc-
tor.
When coolant splashes to
your clothes.
Quickly wash it away with
water and then with soap.
When coolant is swallowed.
Quickly make him vomit and
take him to a doctor.
10. Install:
Radiator cap
11. Fill:
Coolant reservoir tank
Midway
a between maximum
and minimum marks on the
tank.
LOWFULLCOOLANTa
9. Remplir:
Radiateur
Moteur
au niveau spécifié.
ATTENTION:
Ne pas mélanger différents types
d’antigel à l’éthylène glycol conte-
nant un agent anticorrosion pour
moteurs en aluminium.
Ne pas utiliser de l’eau contenant
des impuretés ou de l’huile.
Liquide de refroidissement
recommandé:
Antigel à l’éthylène gly-
col de haute qualité con-
tenant un agent anticor-
rosion pour moteurs en
aluminium
Rapport de mélange liquide
de refroidissement 1 et
eau (eau douce) 2:
50%/50%
Quantité de liquide de
refroidissement:
0,9 L
(0,79 Imp qt, 0,95 US qt)
Notes concernant la manipulation
du liquide de refroidissement:
Le liquide de refroidissement étant
dangereux, il doit être manipulé avec
une attention particulière.
AVERTISSEMENT
En cas de projection de liquide
de refroidissement dans les yeux:
rincer soigneusement les yeux à
l’eau et consulter un médecin.
En cas de projection de liquide
de refroidissement sur les vête-
ments:
rincer rapidement à l’eau claire
puis laver à l’eau savonneuse.
En cas d’ingestion de liquide de
refroidissement:
faire immédiatement vomir et
consulter un médecin dans les
plus brefs délais.
10. Monter:
Bouchon du radiateur
11. Remplir:
Vase d’expansion
A mi-hauteur a entre les repères
de niveau maximum et minimum
du réservoir.
ENGINE
MOTEUR

3 - 27
INSP
ADJ
12. Install:
Coolant reservoir cap
13. Start the engine and let it warm
up for several minutes.
14. Turn off the engine and inspect
the coolant level.
Refer to “COOLANT LEVEL
INSPECTION” section.
NOTE:Before checking the coolant level
wait a few minutes until the coolant
settles.
EC355000RADIATOR CAP INSPECTION
1. Inspect:
Seal (radiator cap)
1
Valve and valve seat
2
Crack/damage
→ Replace.
Exist fur deposits
3
→ Clean
or replace.
RADIATOR CAP OPENING
PRESSURE INSPECTION
1. Attach:
Radiator cap tester
1 and
adapter
2
NOTE:Apply water on the radiator cap seal.
3Radiator cap
2. Apply the specified pressure.
Radiator cap tester:
YU-24460-01/
90890-01325
Radiator cap tester
adapter:
YU-33984/90890-01352
Radiator cap opening
pressure:
110 kPa
(1.1 kg/cm
2, 15.6 psi)
12. Monter:
Bouchon du vase d’expansion
13. Mettre le moteur en marche et le
laisser chauffer pendant quelques
minutes.
14. Couper le moteur et vérifier le
niveau du liquide de refroidisse-
ment.
Se reporter à la section “CON-
TROLE DU NIVEAU DU
LIQUIDE DE REFROIDISSE-
MENT”.
N.B.:
Attendre quelques minutes que le liquide
de refroidissement se stabilise avant d’en
contrôler le niveau.
CONTROLE DU BOUCHON DE
RADIATEUR
1. Contrôler:
Joint (bouchon de radiateur) 1
Soupape et siège de soupape 2
Craquelures/endommagement →
Remplacer.
Dépôts de tartre 3 → Nettoyer
ou remplacer.
CONTROLE DE LA PRESSION
D’OUVERTURE DU BOUCHON DE
RADIATEUR
1. Fixer:
Testeur de bouchon de radiateur
1 et adaptateur 2
N.B.:
Mouiller le joint du bouchon de radiateur
à l’aide d’eau.
3
Bouchon de radiateur
2. Appliquer la pression spécifiée.
Testeur de bouchon de
radiateur:
YU-24460-01/
90890-01325
Adaptateur du testeur de
bouchon de radiateur:
YU-33984/90890-01352
Pression d’ouverture du
bouchon de radiateur:
110 kPa
(1,1 kg/cm
2, 15,6 psi)
ENGINE
MOTEUR