ABS YAMAHA WR 250F 2001 Repair Manual

5 - 50
CHAS
DIRECTION
LKKOPF
STERZO
Lager und Laufring
1. Die Lager und Laufringe in Lö-
sungsmittel waschen.
2. Kontrollieren:
lLager 1
lLaufring
Pitting/Beschädigung ®
Lager und Laufringe im Satz
erneuern.
Die Lager in die Laufringe
einbauen. Die Lager mit
dem Finger drehen. Bei
Schwergängigkeit die Lager
und Laufringe im Satz
erneuern.
ZUSAMMENBAU UND MONTAGE
Untere Gabelbrücke
1. Montieren:
lUnteres Lager 1
HINWEIS:
Lithiumfett auf die Staubschutz-
ringlippe und am inneren Lager-Um-
fang auftragen.
2. Montieren:
lLaufring
lOberes Lager 1
lLagerschutzkappe 2
HINWEIS:
Lithiumfett auf Lager und Lager-
schutzkappen-Lippe auftragen.
3. Montieren:
lUntere Gabelbrücke 1
HINWEIS:
Lithiumfett auf das Lager und den
Abschnitt a der Lenkwelle auftra-
gen. Roulement et cage à billes
1. Nettoyer les roulements et les
cages à billes dans du solvant.
2. Contrôler:
lRoulement 1
lCage à billes
Piqûres/endommagements ®
Remplacer les roulements et
les cages à billes.
Monter les billes dans les cages
à billes. Faire tourner les billes
à la main. Si les billes accro-
chent ou ne tournent pas en
douceur dans les cages à billes,
remplacer le jeu complet de
billes et de cages à billes.
REMONTAGE ET MONTAGE
Té inférieur
1. Monter:
lRoulement inférieur 1
N.B.:
Appliquer de la graisse à base de savon
au lithium sur la lèvre du joint antipous-
sière et sur la circonférence interne du
roulement.
2. Monter:
lCage à billes
lRoulement supérieur 1
lCouvercle de cage à billes 2
N.B.:
Appliquer de la graisse de base de savon
au lithium sur le roulement et la lèvre de
couvercle de cage à billes.
3. Monter:
lTé inférieur 1
N.B.:
Appliquer de la graisse à base de savon
au lithium sur le roulement et sur la par-
tie a de la colonne de direction.Cuscinetto e pista
1. Lavare i cuscinetti e le piste con
un solvente.
2. Ispezionare:
lCuscinetto 1
lPista
Vaiolature/danno ® Sostituire
in blocco i cuscinetti e le corse.
Installare il cuscinetto nelle
corse. Provare manualmente la
rotazione del cuscinetto. Se il
cuscinetto si blocca o non si
muove agevolmente nelle
corse, sostituire in blocco il
cuscinetto e le corse.
MONTAGGIO ED INSTALLA-
ZIONE
Staffa inferiore
1. Installare:
lCuscinetto inferiore 1
NOTA:
Applicare grasso a base di sapone di litio
sul labbro del parapolvere e sulla circon-
ferenza interna del cuscinetto.
2. Installare:
lPista
lCuscinetto superiore 1
lCoperchio pista 2
NOTA:
Applicare grasso a base di sapone di litio
sul cuscinetto e al labbro del coperchio
della corsa.
3. Installare:
lStaffa inferiore 1
NOTA:
Applicare grasso a base di sapone di litio
sul cuscinetto e sulla zona a del can-
notto di sterzo.

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CHASSWINGARM
EC570000
SWINGARM
Extent of removal:1 Swingarm removal
Extent of removal Order Part name Q’ty Remarks
STEERING 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.
Brake hose holder
Rear brake caliper
Bolt (brake pedal)
Drive chainRefer to “FRONT BRAKE AND REAR
BRAKE” section.
Shift the brake pedal backward.
1 Drive chain case 1
2 Lower chain tensioner 1
3 Bolt (rear shock absorber-relay
arm)1 Hold the swingarm.
4 Bolt (connecting rod) 1
5 Pivot shaft 1
6 Swingarm 1
1

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CHASSWINGARM
Swingarm
1. Install:
lBushing 1
lThrust bearing 2
lOil seal 3
lCollar 4
To swingarm 5.
NOTE:
Apply the molybdenum disulfide grease on the
bushings, thrust bearings and oil seal lips.
2. Install:
lCollar 1
To relay arm 2.
NOTE:
Apply the molybdenum disulfide grease on the
collars, bearings and oil seal lips.
3. Install:
lCollar 1
To connecting rod 2.
NOTE:
Apply the molybdenum disulfide grease on the
collar, bearings and oil seal lips.
4. Install:
lConnecting rod 1
lBolt (connecting rod) 2
lWasher 3
lNut (connecting rod) 4
To relay arm 5.
NOTE:
Apply the molybdenum disulfide grease on the
bolt.
CAUTION:
Install the nut on the left side of the chas-
sis. If you make a mistake in its installation
position, the nut contacts the swingarm
when stroking the rear shock absorber.
T R..80 Nm (8.0 m · kg, 58 ft · lb)

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CHAS
BRAS OSCILLANT
SCHWINGE
FORCELLONE OSCILLANTE
Schwinge
1. Montieren:
lBuchse 1
lDrucklager 2
lDichtring 3
lHülse 4
(an der Schwinge 5)
HINWEIS:
Molybdändisulfidfett auf Buchsen,
Drucklager und Öldichtring lippen
auftragen.
2. Montieren:
lHülse 1
(am Umlenkhebel 2)
HINWEIS:
Molybdändisulfidfett auf Hülsen, La-
ger und den Dichringlippen auftra-
gen.
3. Montieren:
lHülse 1
(am Übertragungshebel 2)
HINWEIS:
Molybdändisulfidfett auf Hülsen, La-
ger und den Dichringlippen auftra-
gen.
4. Montieren:
lÜbertragungshebel 1
lSchraube (Übertragungshe-
bel) 2
lUnterlegcheibe 3
lMutter (Übertragungshebel)
4
(am Umlenkhebel 5)
HINWEIS:
Molybdändisulfidfett auf die Schrau-
be auftragen.
ACHTUNG:
Die Mutter an der linken Fahrzeug-
seite einbauen. Anderenfalls be-
rührt die Mutter die Schwinge bei
eingefedertem Federbein.
T R..80 Nm (8,0 m · kg)
Bras oscillant
1. Monter:
lBague 1
lRoulement de butée 2
lBague d’étanchéité 3
lCollerette 4
Sur le bras oscillant 5.
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur les bagues, les roule-
ments de butée et les lèvres de bague
d’étanchéité.
2. Monter:
lCollerette 1
Sur le bras de relais 2.
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur les collerettes, les roule-
ments et les lèvres de bague d’étan-
chéité.
3. Monter:
lCollerette 1
Sur la bielle 2.
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur la collerette, les roule-
ments et les lèvres de bague d’étan-
chéité.
4. Monter:
lBielle 1
lBoulon (bielle) 2
lRondelle 3
lEcrou (bielle) 4
Sur le bras de relais 5.
N.B.:
Appliquer de la graisse au bisulfure de
molybdène sur le boulon.
ATTENTION:
Installer l’écrou sur le côté gauche du
châssis. Si l’écrou est mal positionné, il
risque de toucher le bras oscillant
quand l’amortisseur arrière absorbe
des coups.
T R..80 Nm (8,0 m · kg, 58 ft · lb)
Forcellone oscillante
1. Installare:
lBoccola 1
lCuscinetto di spinta 2
lParaolio 3
lCollarino 4
Sul forcellone oscillante 5.
NOTA:
Applicare grasso al disolfuro di molib-
deno sulle boccole, sui cuscinetti di
spinta e sui labbri dei paraolio.
2. Installare:
lCollarino 1
Sulla leva di rinvio 2.
NOTA:
Applicare grasso al disolfuro di molib-
deno sui collarini, sui cuscinetti e sui
labbri dei paraolio.
3. Installare:
lCollarino 1
Sulla biella 2.
NOTA:
Applicare grasso al disolfuro di molib-
deno sul collarino, sui cuscinetti e sui
labbri dei paraolio.
4. Installare:
lBiella 1
lBullone (biella) 2
lRondella 3
lDado (biella) 4
Sulla leva di rinvio 5.
NOTA:
Applicare grasso al disolfuro di molib-
deno sul bullone.
ATTENZIONE:
Installare il dado sul lato sinistro della
parte ciclistica. In caso di posizione di
installazione errata, il dado viene a
contatto con il forcellone oscillante
quando si sollecita l’ammortizzatore
posteriore.
T R..80 Nm (8,0 m · kg, 58 ft · lb)

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CHASSWINGARM
5. Install:
lRelay arm 1
lBolt (relay arm) 2
lWasher 3
lNut (relay arm) 4
To swingarm.
NOTE:
lApply the molybdenum disulfide grease on
the bolt.
lDo not tighten the nut yet.
6. Install:
lSwingarm 1
lPivot shaft 2
NOTE:
lApply the molybdenum disulfide grease on
the pivot shaft.
lInsert the pivot shaft from right side.
T R..85 Nm (8.5 m · kg, 61 ft · lb)
7. Check:
lSwingarm side play a
Free play exists ® Replace thrust bear-
ing.
lSwingarm up and down movement b
Unsmooth movement/binding/rough
spots ® Grease or replace bearings,
bushings and collars.
8. Install:
lBolt (connecting rod) 1
lWasher 2
lNut (connecting rod) 3
NOTE:
lApply the molybdenum disulfide grease on
the bolt.
lDo not tighten the nut yet.
9. Install:
lWasher 1
lBolt (rear shock absorber-relay arm) 2
NOTE:
lApply the molybdenum disulfide grease on
the bolt.
lInsert the bolt from right side.
T R..53 Nm (5.3 m · kg, 38 ft · lb)

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CHASREAR SHOCK ABSORBER
EC580000
REAR SHOCK ABSORBER
Extent of removal:1 Rear shock absorber removal2 Rear shock absorber disassembly
Extent of removal Order Part name Q’ty Remarks
Preparation for removalREAR SHOCK ABSORBER
REMOVAL
Hold the machine by placing the
suitable stand under the engine.
WARNING
Support the machine securely so there is nodanger of it falling over.
Seat and side covers Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section in the CHAPTER 4.
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 Refer to “RADIATOR” section in the
CHAPTER 4.
1 Taillight connector 2
2 Band 2
3 Bolt (reservoir tank) 1
4 Clamp (air filter joint) 1 Only loosening.
5 Rear frame 1
6 Bolt (rear shock absorber-relay arm) 1Hold the swingarm.
7 Bolt (rear shock absorber-frame) 1
8 Rear shock absorber 1
12

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CHAS
AMORTISSEUR ARRIERE
FEDERBEIN
AMMORTIZZATORE POSTERIORE
FEDERBEIN
Demontage-Arbeiten:1 Federbein demontieren2 Federbein zerlegen
Demontage-ArbeitenReihen-
folgeBauteil Anz. Bemerkungen
Vorbereitung für den AusbauFEDERBEIN DEMONTIEREN
Das Motorrad am Motor aufbocken.
Sitze und Seitenabdeckungen Siehe Abschnitt “SITZBANK, KRAFTSTOFFTANK
UND SEITENABDECKUNGEN” in KAPITEL 4.
Schalldämpfer Siehe Abschnitt “AUSPUFF UND SCHALLDÄMP-
FER” in KAPITEL 4.
Kühlflüssigkeit ablassen. Siehe Abschnitt “KÜHLFLÜSSIGKEIT WECHSELN”
in KAPITEL 3.
Kühlmittelausgleichsbehälter Siehe Abschnitt “KÜHLER” in KAPITEL 4.
1 Rücklicht-Steckverbinder 2
2 Band 2
3 Schraube (Bremsflüssigkeitsbehälter) 1
4 Schlauchschelle (Luftfilteranschluß) 1 Nur lockern.
5 Rahmenhinterteil 1
6 Schraube (Umlenkhebel, Federbein) 1 Die Schwinge festhalten.
7 Schraube (Federbein, Rahmen) 1
8Federbein
1
WARNUNG
Das Motorrad gegen Umfallen sichern.
21
AMORTISSEUR ARRIERE
Organisation de la dépose:1 Dépose de l’amortisseur arrière2 Démontage de l’amortisseur arrière
Organisation de la dépose Ordre Nom de pièce Qté Remarques
Préparation pour la déposeDEPOSE DE L’AMORTISSEUR
ARRIERE
Maintenir la machine en plaçant un support
approprié sous le moteur.
Selle et caches latéraux Se référer à la section “SELLE, RESERVOIR A
ESSENCE ET CACHES LATERAUX” du CHAPITRE 4.
Silencieux Se référer à la section “TUYAU D'ECHAPPEMENT ET
SILENCIEUX” du CHAPITRE 4.
Vidanger le liquide de refroidissement. Se référer à la section “REMPLACEMENT DU
LIQUIDE DE REFROIDISSEMENT” du CHAPITRE 3.
Vase d’expansion Se référer à la section “RADIATEUR” du CHAPITRE 4.
1 Connecteur de feu 2
2 Bande 2
3 Boulon (réservoir liquide de frein) 1
4 Bride (raccord de filtre à air) 1 Desserrer uniquement.
5 Cadre arrière 1
6 Boulon (amortisseur arrière-bras de relais) 1 Tenir le bras oscillant.
7 Boulon (amortisseur arrière-cadre) 1
8Amortisseur arrière
1
AVERTISSEMENT
Bien soutenir la machine afin qu’elle ne risque
pas de se renverser.
21
AMMORTIZZATORE POSTERIORE
Portata dello smontaggio:1 Rimozione ammortizzatore posteriore2 Smontaggio ammortizzatore posteriore
Portata dello smontaggio Ordine Denominazione Quantità Osservazioni
Preparazione per la rimozioneRIMOZIONE AMMORTIZZATORE
POSTERIORE
Mantenere il veicolo posizionando un supporto
idoneo sotto al motore.
AVVERTENZA
Sostenere saldamente il veicolo in modo che non ci siail rischio che si rovesci.
Sella e carenature laterali Fare riferimento al paragrafo “SELLA, SERBATOIO
DEL CARBURANTE E CARENATURA LATERALE” .
Silenziatore Fare riferimento al paragrafo “TUBO DI SCARICO E
SILENZIATORE” nel CAPITOLO 4.
Scaricare il refrigerante. Fare riferimento al paragrafo “SOSTITUZIONE REFRI-
GERANTE” nel CAPITOLO 3.
Serbatoio del liquido di raffreddamento Fare riferimento al paragrafo “RADIATORE” nel CAPI-
TOLO 4.
1 Connettore del fanalino posteriore 2
2 Band 2
3 Bullone (serbatoio) 1
4 Morsetto (giunto filtro dell’aria) 1 Allentare soltanto.
5 Telaio posteriore 1
6 Bullone (ammortizzatore posteriore - leva di
rinvio)1 Sostenere il forcellone oscillante.
7 Bullone (ammortizzatore posteriore - telaio) 1
8Ammortizzatore posteriore
1
21

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CHASREAR SHOCK ABSORBER
Extent of removal Order Part name Q’ty Remarks
9 Locknut 1 Only loosening.
10 Adjuster 1 Only loosening.
11 Lower spring guide 1
12 Upper spring guide 1
13 Spring (rear shock absorber) 1
14 Bearing 2 Refer to “REMOVAL POINTS”.
2

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CHAS
HANDLING NOTE
WARNING
This rear shock absorber is provided with a
separate type tank filled with high-pressure
nitrogen gas. To prevent the danger of
explosion, read and understand the follow-
ing information before handling the shock
absorber.
The manufacturer can not be held respon-
sible for property damage or personal
injury that may result from improper han-
dling.
1. Never tamper or attempt to disassem-
ble the cylinder or the tank.
2. Never throw the rear shock absorber
into an open flame or other high heat.
The rear shock absorber may explode
as a result of nitrogen gas expansion
and/or damage to the hose.
3. Be careful not to damage any part of
the gas tank. A damaged gas tank will
impair the damping performance or
cause a malfunction.
4. Take care not to scratch the contact
surface of the piston rod with the cylin-
der; or oil could leak out.
5. Never attempt to remove the plug at
the bottom of the nitrogen gas tank. It
is very dangerous to remove the plug.
6. When scrapping the rear shock
absorber, follow the instructions on
disposal.
NOTES ON DISPOSAL (YAMAHA DEALERS
ONLY)
Before disposing the rear shock absorber, be
sure to extract the nitrogen gas from valve 1.
Wear eye protection to prevent eye damage
from escaping gas and/or metal chips.
WARNING
To dispose of a damaged or worn-out rear
shock absorber, take the unit to your
Yamaha dealer for this disposal procedure.
REAR SHOCK ABSORBER

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CHAS
EC583000
REMOVAL POINTS
EC583320
Bearing
1. Remove:
lStopper ring (upper bearing) 1
NOTE:
Press in the bearing while pressing its outer
race and remove the stopper ring.
2. Remove:
lUpper bearing 1
NOTE:
Remove the bearing by pressing its outer race.
3. Remove:
lLower bearing 1
NOTE:
Remove the bearing by pressing its outer race.
EC584000
INSPECTION
Rear shock absorber
1. Inspect:
lDamper rod 1
Bends/damage ® Replace rear shock
absorber assembly.
lShock absorber 2
Oil leaks ® Replace rear shock
absorber assembly.
Gas leaks ® Replace rear shock
absorber assembly.
lSpring 3
Damage ® Replace spring.
Fatigue ® Replace spring.
Move spring up and down.
lSpring guide 4
Wear/damage ® Replace spring guide.
lBearing 5
Free play exists/unsmooth revolution/
rust ® Replace.
REAR SHOCK ABSORBER