2005 YAMAHA WR 250F air filter

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CHASREAR SHOCK ABSORBER
EC580000
REAR SHOCK ABSORBER
Extent of removal:
1 Rear shock absorber removal
2 Rear shock absorber disassembly
Extent of removal Order Part name Q’ty Remarks
REAR SHOCK ABSORBER REMOVAL
WARNING
Support the machine securely so there is nodanger of it falling over. Preparation for removal Hold the machine by placing the suitable
stand under the engine.
Seat, fitting band and side covers Refer to “SEAT, FUEL TANK AND SIDE COVERS”
section in the CHAPTER 4.
Air filter case cover Refer to “AIR FILTER CLEANING” section in the
CHAPTER 3.
Silencer Refer to “EXHAUST PIPE AND SILENCER” section
in the CHAPTER 4.
Drain the coolant. Refer to “COOLANT REPLACEMENT” section in the
CHAPTER 3.
Coolant reservoir breather hose Disconnect at the coolant reservoir side.
Coolant reservoir hose Disconnect at the coolant reservoir side.
Battery Refer to “BATTERY INSPECTION AND
CHARGING” section in the CHAPTER 3.
Disconnect the starter relay coupler.
Starter motor lead Disconnect at the starter relay side.

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CHAS
AMORTISSEUR ARRIERE
Organisation de la dépose:1 Dépose de l’amortisseur arrière2 Démontage de l’amortisseur arrière
Organisation de la dépose Ordre Nom de la pièce QtéRemarques
DEPOSE DE L’AMORTISSEUR ARRIERE
AVERTISSEMENTBien caler la moto afin qu’elle ne risque pas de bascu-
ler. Préparation à la dépose Caler la moto en plaçant un support adéquat
sous le moteur.
Selle, bande de fixation et caches latéraux Se reporter à la section “SELLE, RESERVOIR DE
CARBURANT ET CACHES LATERAUX” au
CHAPITRE 4.
Couvercle du boîtier de filtre à air Se reporter à la section “NETTOYAGE DU FILTRE A
AIR” au CHAPITRE 3.
Silencieux Se reporter à la section “TUBE D’ECHAPPEMENT ET
SILENCIEUX” au CHAPITRE 4.
Vidanger le liquide de refroidissement. Se reporter à la section “CHANGEMENT DU LIQUIDE
DE REFROIDISSEMENT” au CHAPITRE 3.
Durit de mise à l’air du vase d’expansion Débrancher du côté vase d’expansion.
Durit du vase d’expansion Débrancher du côté vase d’expansion.
Batterie Se reporter à la section “CONTROLE ET CHARGE DE
LA BATTERIE” au CHAPITRE 3.
Remplacer la fiche rapide du relais de
démarreur.
Fil du démarreur Déconnecter du côté du relais de démarreur.
FEDERBEIN
Arbeitsumfang:
1 Federbein demontieren
2 Federbein zerlegen
Arbeitsumfang
ReihenfolgeBauteil Anz. Bemerkungen
FEDERBEIN DEMONTIEREN
WARNUNG
Das Fahrzeug sicher abstützen, damit es nicht
umfallen kann. Vorbereitungsarbeiten Das Motorrad am Motor aufbocken und in
gerader Stellung halten.
Sitzbank, Haltegummi und
SeitenabdeckungenSiehe unter “SITZBANK, KRAFTSTOFFTANK UND
SEITENABDECKUNGEN” in KAPITEL 4.
Luftfilter-Gehäusedeckel Siehe unter “LUFTFILTER REINIGEN” in KAPITEL
3.
Schalldämpfer Siehe unter “AUSPUFFKRÜMMER UND
SCHALLDÄMPFER” in KAPITEL 4.
Die Kühlflüssigkeit ablassen. Siehe unter “KÜHLFLÜSSIGKEIT WECHSELN” in
KAPITEL 3.
Ausgleichsbehälter-Entlüftungsschlauch Ausgleichsbehälterseitig lösen.
Ausgleichsbehälter-Schlauch Ausgleichsbehälterseitig lösen.
Batterie Siehe unter “BATTERIE KONTROLLIEREN UND
LADEN” in KAPITEL 3.
Den Starter-Relais-Steckverbinder lösen.
Starter-Kabel Relaisseitig lösen.
AMORTISSEUR ARRIERE
FEDERBEIN

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CHASREAR SHOCK ABSORBER
Extent of removal Order Part name Q’ty Remarks
1 Locking tie 3
2 Taillight coupler 1
3 Starting circuit cut-off relay coupler 1
4 Plastic band 2
5 Clamp (air filter joint) 1 Only loosening.
6 Rear frame 1
7 Bolt (rear shock absorber-relay arm) 1 Hold the swingarm.
8 Bolt (rear shock absorber-frame) 1
9 Rear shock absorber 1
10 Locknut 1
Only loosening.
11 Adjuster 1
12 Lower spring guide 1
13 Upper spring guide 1
14 Spring (rear shock absorber) 1
15 Bearing 2 Refer to “REMOVAL POINTS”.
1
2

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CHASREAR SHOCK ABSORBER
3. Install:
Rear shock absorber
4. Install:
Bolt (rear shock absorber-
frame)
1
Nut (rear shock absorber-
frame)
2
NOTE:Apply the molybdenum disulfide
grease on the bolt.
T R..56 Nm (5.6 m · kg, 40 ft · lb)
5. Install:
Bolt (rear shock absorber-
relay arm)
1
Nut (rear shock absorber-relay
arm)
2
NOTE:Apply the molybdenum disulfide
grease on the bolt.
6. Install:
Rear frame
1
Bolt [rear frame (upper)]
2
Bolt [rear frame (lower)]
3
T R..53 Nm (5.3 m · kg, 38 ft · lb)
T R..32 Nm (3.2 m · kg, 23 ft · lb)
T R..29 Nm (2.9 m · kg, 21 ft · lb)
7. Tighten:
Screw (air filter joint)
1
T R..3 Nm (0.3 m · kg, 2.2 ft · lb)
8. Install:
Plastic band
1
Starting circuit cut-off relay
coupler
2
Taillight coupler
3
Locking tie
4
3. Monter:
Amortisseur arrière
4. Monter:
Boulon (amortisseur arrière -
cadre) 1
Ecrou (amortisseur arrière -
cadre) 2
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur le boulon.
T R..56 Nm (5,6 m · kg, 40 ft · lb)
5. Monter:
Boulon (amortisseur arrière - bras
relais) 1
Ecrou (amortisseur arrière - bras
relais) 2
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur le boulon.
6. Monter:
Cadre arrière 1
Boulon [cadre arrière (supérieur)]
2
Boulon [cadre arrière (inférieur)]
3
T R..53 Nm (5,3 m · kg, 38 ft · lb)
T R..32 Nm (3,2 m · kg, 23 ft · lb)
T R..29 Nm (2,9 m · kg, 21 ft · lb)
7. Serrer:
Vis (raccord du filtre à air) 1
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
8. Monter:
Collier réutilisable 1
Fiche rapide du relais de coupe-
circuit de démarrage 2
Fiche rapide du feu arrière 3
Collier 4
AMORTISSEUR ARRIERE

7 - 17
TUNSETTING
Examples of carburetor setting depending on symptom
This should be taken simply for an example. It is necessary to set the carburetor while checking the operating condi-
tions of the engine.Symptom Setting Checking
At full throttle
Hard breathing
Shearing noise
Whitish spark plug
↓
Lean mixtureIncrease main jet calibration no.
(Gradually)Discoloration of spark plug
→
If tan color, it is in good condition.
If cannot be corrected:
Clogged float valve seat
Clogged fuel hose
Clogged fuel cock
Check that the accelerator pump operates
smoothly.
At full throttle
Speed pick-up stops
Slow speed pick-up
Slow response
Sooty spark plug
↓
Rich mixtureDecrease main jet calibration no.
(Gradually)Discoloration of spark plug
→
If tan color, it is in good condition.
If cannot be corrected:
Clogged air filter
Fuel overflow from carburetor
Lean mixture Lower jet needle clip position.
(1 groove down)
The clip position is the jet needle groove
on which the clip is installed. The positions
are numbered from the top.
Check that the accelerator pump operates
smoothly. (except for rich mixture
symptom). Rich mixture Raise jet needle clip position.
(1 groove up)
1/4 ~ 3/4 throttle
Hard breathing
Lack of speedLower jet needle clip position.
(1 groove down)
1/4 ~ 1/2 throttle
Slow speed pick-up
Poor accelerationRaise jet needle clip position.
(1 groove up)
Closed to 1/4 throttle
Hard breathing
Speed downUse jet needle with a smaller diameter. Slow-speed-circuit passage
Clogged
→ Clean.
Overflow from carburetor
Closed to 1/4 throttle
Poor accelerationUse jet needle with a larger diameter.
Raise jet needle clip position.
(1 groove up)
Poor response in the low to
intermediate speedsRaise jet needle clip position.
If this has no effect, lower the jet needle
clip position.
Poor response when throttle is
opened quicklyCheck overall settings.
Use main jet with a lower calibration no.
Raise jet needle clip position.
(1 groove up)
If these have no effect, use a main jet with
a higher calibration no. and lower the jet
needle clip position.Check air filter for fouling.
Check that the accelerator pump operates
smoothly.
Leaner
↑
(Standard)
↓
Richer
Jet needleClip
Groove 7 Groove 6
Groove 5
Groove 4
Groove 3
Groove 2
Groove 1
*