air filter YAMAHA WR 250F 2001 Betriebsanleitungen (in German)

GEN
INFO

1 - 1
DESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1
Clutch lever
2
Decompression lever
3
Trip meter
4
Light switch
5
Front brake lever
6
Throttle grip
7
Radiator cap
8
Fuel tank cap
9
Oil tank cap
0
Engine stop switch
A
Taillight
B
Kickstarter crank
C
Fuel tank
D
Headlight
E
Radiator
F
Coolant drain bolt
G
Rear brake pedal
H
Valve joint
I
Fuel cock
J
Cold starter knob
K
Hot starter knob (red)
L
Drive chain
M
Air filter
N
Shift pedal
O
Front fork
NOTE:

l
The machine you have purchased may differ
slightly from those shown in the following.
l
Designs and specifications are subject to
change without notice.
1

GEN
INFO

DESCRIPTION
FAHRZEUGBESCHREIBUNG
DESCRIZIONE
ALLGEMEINE
ANGABEN
FAHRZEUGBESCHREI-
BUNG
1
Kupplungshebel
2
Dekompressionshebel
3
Tageskilometerzähler
4
Lichtschalter
5
Handbremshebel
6
Gasdrehgriff
7
Kühlerverschlußdeckel
8
Kraftstoffankverschluß
9
Öltankdeckel
0
Motorstoppschalter
A
Rücklicht
B
Kickstarterhebel
C
Kraftstofftank
D
Scheinwerfer
E
Kühler
F
Kühlmittel-Ablaßschraube
G
Fußbremshebel
H
Auslaufschutzventil
I
Kraftstoffhahn
J
Kaltstarterknopf
K
Heißstarterknopf (rot)
L
Antriebskette
M
Luftfilter
N
Schalthebel
O
Teleskopgabel
HINWEIS:

l
Leichte Modell-Abweichungen
möglich.
l
Änderungen an Design und techni-
schen Daten jederzeit vorbehalten.
RENSEIGNEMENTS
GENERAUX
DESCRIPTION
1
Levier d’embrayage
2
Levier de décompression
3
Compteur de vitesse
4
Contacteur d’éclairage
5
Levier de frein avant
6
Poignée des gaz
7
Bouchon de radiateur
8
Bouchon de réservoir de carburant
9
Bouchon du réservoir d’huile
0
Coupe-circuit du moteur
A
Lampe arrière
B
Kick
C
Réservoir de carburant
D
Phare
E
Radiateur
F
Boulon de vidange du liquide de
refroidissement
G
Pédale de frein arrière
H
Joint de robinet
I
Robinet de carburant
J
Bouton de démarrage à froid
K
Bouton de démarrage à chaud
(rouge)
L
Chaîne de transmission
M
Filtre à air
N
Sélecteur
OFourche avant
N.B.:
lVotre machine diffère peut-être par-
tiellement de celle montrée sur ces
photos.
lLa conception et les caractéristiques
peuvent êtres changées sans préavis.
1 - 1
INFORMAZIONI
GENERALI
DESCRIZIONE
1Leva della frizione
2Leva della decompressione
3Contachilometri parziale
4Interruttore luci
5Leva del freno anteriore
6Manopola dell’acceleratore
7Tappo del radiatore
8Tappo del serbatoio del carburante
9Tappo del serbatoio dell’olio
0Interruttore di arresto motore
AFanalino posteriore
BPedivella di avviamento
CSerbatoio del carburante
DFaro
ERadiatore
FBullone di scarico del refrigerante
GPedale del freno posteriore
HGiunto a valvola
IRubinetto del carburante
JManopola di avviamento a freddo
KManopola di avviamento a caldo
(rossa)
LCatena di trasmissione
MFiltro aria
NPedale del cambio
OForcella anteriore
NOTA:
lIl veicolo acquistato potrebbe differire
leggermente da quelli illustrati qui di
seguito.
lI modelli e le specifiche sono soggetti
a variazioni senza preavviso.
1

1 - 3
GEN
INFO

IMPORTANT INFORMATION
EC130000
IMPORTANT INFORMATION
EC131010
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1. Remove all dirt, mud, dust, and foreign
material before removal and disassem-
bly.
When washing the machine with high
pressured water, cover the parts follows.
l
Silencer end
l
Air filter intake hole
l
Water pump housing hole at the bottom
l
Carburetor accelerator pump
2. Use proper tools and cleaning equip-
ment. Refer to “SPECIAL TOOLS” sec-
tion.
3. When disassembling the machine, keep
mated parts together. They include
gears, cylinders, pistons, and other
mated parts that have been “mated”
through normal wear. Mated parts must
be reused as an assembly or replaced.
4. During the machine disassembly, clean
all parts and place them in trays in the
order of disassembly. This will speed up
assembly time and help assure that all
parts are correctly reinstalled.
5. Keep away from fire.

GEN
INFO
INFORMATIONS IMPORTANTES
WICHTIGE INFORMATIONEN
INFORMAZIONI IMPORTANTI
WICHTIGE INFORMATIO-
NEN
VORBEREITUNG FÜR AUSBAU
UND ZERLEGUNG
1. Vor dem Ausbau oder Zerle-
gen der Bauteile sämtlichen
Schmutz, Schlamm, Staub so-
wie andere Fremdkörper ent-
fernen.
Wenn das Motorrad mit einem
Hochdruckwascher gereinigt
wird, sind folgende Teile sorg-
fältig abzudecken.
lSchalldämpferende
lLuftfilter-Einlaßöffnung
lWasserpumpengehäuse-
loch unten
lVergaser-Beschleuniger-
pumpe
2. Nur geeignete Werkzeuge und
Reinigungsmittel verwenden.
Siehe unter “SPEZIALWERK-
ZEUGE”.
3. Beim Zerlegen zusammenge-
hörige Teile immer gemein-
sam ablegen. Dies gilt beson-
ders für Zahnräder, Zylinder,
Kolben und alle beweglichen
Teile, die miteinander arbei-
ten. Solche Baugruppen dür-
fen nur komplett wiederver-
wendet oder ausgetauscht
werden.
4. Alle ausgebauten Teile reini-
gen und in der Reihenfolge
des Ausbaus auf einer saube-
ren Unterlage ablegen. Dies
gewährleistet einen zügigen
und korrekten Zusammenbau.
5. Alle Teile von offenem Feuer
fernhalten.
INFORMATIONS IMPOR-
TANTES
PREPARATION POUR LA DEPOSE
ET DEMONTAGE
1. Eliminer soigneusement crasse,
boue, poussière et corps étrangers
avant la dépose et le démontage.
Avant de laver le véhicule à l’eau
pressurisée, recouvrir les parties
suivantes:
lExtrémité du silencieux
lOrifice d’admission du filtre à
air
lOrifice au fond du carter de la
pompe à eau
lPompe d’accélération du car-
burateur
2. Utiliser les outils et le matériel de
nettoyage correct. Se reporter à la
section “OUTILS SPECIAUX”.
3. Lors du démontage de la
machine, garder les pièces conne-
xes ensemble. Ils comprennent
les engrenages, cylindres, pistons
et autres pièces connexes qui se
sont “accouplées” par usure nor-
male. Les pièces connexes doi-
vent être réutilisées en un
ensemble ou changées.
4. Lors du démontage de la
machine, nettoyer toutes les piè-
ces et les mettre dans des pla-
teaux dans l’ordre du démontage.
Ceci diminuera le temps de
remontage et permettra d’être sûr
que toutes les pièces sont correc-
tement remontées.
5. Tenir éloigné du feu.
1 - 3
INFORMAZIONI IMPOR-
TANTI
PREPARATIVI PER LA RIMO-
ZIONE E IL DISASSEMBLAGGIO
1. Rimuovere tutto lo sporco, il
fango, la polvere e il materiale
estraneo prima della rimozione e
del disassemblaggio.
Durante il lavaggio del veicolo
con acqua ad alta pressione,
coprire le parti seguenti:
lEstremità del silenziatore
lForo di ingresso del filtro
dell’aria
lForo di alloggiamento della
pompa dell’acqua in basso
lPompa di circolazione del car-
buratore
2. Utilizzare utensili e strumenta-
zione per la pulizia adatti. Fare
riferimento al paragrafo “UTEN-
SILI SPECIALI”.
3. Nello smontaggio del veicolo,
non separare parti accoppiate. Ciò
comprende gli ingranaggi, i cilin-
dri, i pistoni e altri pezzi accop-
piati, che si sono adattati l’uno
all’altro attraverso la normale
usura. Le parti accoppiate vanno
riutilizzate come una sola unità o
sostituite.
4. Durante lo smontaggio del vei-
colo, pulire tutti i pezzi e posizio-
narli sui vassoi nell’ordine in cui
sono stati smontati. Ciò abbrevia i
tempi di rimontaggio e assicura
che tutti i pezzi siano reinstallati
correttamente.
5. Tenere lontano dal fuoco.

1 - 12
GEN
INFO
CONTROL FUNCTIONS
EC158010
FUEL COCK
The fuel cock supplies fuel from the tank to
carburetor while filtering the fuel. The fuel cock
has the three positions:
OFF:With the lever in this position, fuel will not
flow. Always return the lever to this posi-
tion when the engine is not running.
ON: With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RES:This indicates reserve. If you run out of
fuel while riding, move the lever to this
position. FILL THE TANK AT THE FIRST
OPPORTUNITY. BE SURE TO SET THE
LEVER TO “ON” AFTER REFUELING.
COLD STARTER KNOB
When cold, the engine requires a richer air-fuel
mixture for starting. A separate starter circuit,
which is controlled by the cold starter knob 1,
supplies this mixture. Pull the cold starter knob
out to open the circuit for starting. When the
engine has warmed up, push it in to close the
circuit.
HOT STARTER KNOB
The hot starter knob (red) 1 is used when
starting a warm engine.
Use the hot starter knob when starting the
engine again immediately after it was stopped
(the engine is still warm). Pulling out the hot
starter knob injects secondary air to thin the
air-fuel mixture temporarily, allowing the
engine to be started more easily.
CAUTION:
After the engine has started, be sure to
push the hot starter knob back in.

GEN
INFO
FONCTIONS DES COMMANDES
ARMATUREN UND DEREN FUNKTION
FUNZIONI DI COMANDO
KRAFTSTOFFHAHN
Der Kraftstoffhahn regelt die Kraft-
stoffzufuhr vom Tank zum Vergaser
und filtert gleichzeitig den Kraftstoff.
Der Kraftstoffhahn hat drei Stellungen:
OFF: Der Kraftstoffhahn ist
geschlossen und die Kraft-
stoffzufuhr unterbrochen. Den
Kraftstoffhahn nach Abstellen
des Motors auf “OFF” stellen.
ON: Diese Stellung ist für den Nor-
malbetrieb: der laufende Motor
wird mit Kraftstoff versorgt.
Den Kraftstoffhahn vor Fahrt-
antritt auf “ON” stellen.
RES: Zeigt Reserve an. Falls beim
Fahren der Tank leer wird, den
Kraftstoffhahn auf diese Posi-
tion stellen. DANACH BEI
NÄCHSTER GELEGENHEIT
AUFTANKEN. NACH DEM
AUFTANKEN NICHT VER-
GESSEN, DEN KRAFT-
STOFFHAHN WIEDER AUF
“ON” ZU STELLEN.
KALTSTARTERKNOPF
Ein kalter Motor benötigt zum Starten
ein fetteres Luft-Kraftstoff-Gemisch.
Eine spezielle Startvorrichtung, die
über den Kaltstarterknopf 1 aktiviert
wird, liefert dieses Gemisch. Den
Kaltstarterknopf zum Starten heraus-
ziehen und nachdem der Motor
warmgelaufen ist wieder hineindrük-
ken.
HEISSTARTERKNOPF
Der Heißstarterknopf (rot) 1 dient
zum Starten mit heißem Motor.
Den Heißstarterknopf verwenden,
wenn der Motor kurz nach dem Aus-
schalten erneut gestartet wird (der
Motor ist noch warm). Bei Herauszie-
hen des Heißstarterknopfs wird das
Gemisch durch vorübergehende Bei-
mischung von Sekundärluft ver-
dünnt, wodurch der Motor leichter
anstartet.
ACHTUNG:
Nach dem Anlassen des Motors
den Heißstarterknopf wieder hin-
ein drücken. ROBINET DE CARBURANT
Le robinet de carburant fournit le carbu-
rant du réservoir au carburateur et la fil-
tre. Le robinet de carburant a trois
positions:
OFF: Avec le levier à cette position, le
carburant ne coule pas. Toujours
remettre le levier à cette position
quand le moteur est arrêté.
ON: Avec le levier à cette position, le
carburant arrive au carburateur.
La conduite normale est faite
avec le levier à cette position.
RES: C’est la position de réserve. Si le
réservoir de carburant se vide en
cours de route, le levier doit être
mis dans cette position. REM-
PLIR LE RESERVOIR DES
QUE POSSIBLE. APRES
AVOIR FAIT LE PLEIN DE
CARBURANT, REMETTRE LE
LEVIER EN POSITION “ON” .
BOUTON DE DEMARRAGE A
FROID
Quand il est froid, le moteur a besoin
d’un mélange air-essence plus riche pour
le démarrage. Un circuit de démarrage
séparé, commandé par le bouton de de
démarrage à froid 1, fournit ce
mélange. Tirer le bouton de démarrage à
froid pour ouvrir le circuit de démarrage.
Quand le moteur est chaud, repousser le
bouton pour fermer le circuit.
BOUTON DE DEMARRAGE A
CHAUD
Le bouton de démarrage à chaud (rouge)
1 s’utilise lors de la mise en marche
d’un moteur chaud.
Recourir au bouton de démarrage à
chaud lorsque l’on met le moteur en
marche immédiatement après l’avoir
éteint (le moteur est encore chaud).
Quand le bouton de démarrage à chaud
est tiré, de l’air secondaire pénètre dans
le moteur et appauvrit momentanément
le mélange air-essence afin de faciliter sa
mise en marche.
ATTENTION:
Après la mise en marche du moteur,
veiller à repousser complètement le
bouton de démarrage à chaud.RUBINETTO DEL CARBURANTE
Il rubinetto del carburante alimenta il
carburante dal serbatoio al carburatore
filtrandolo. Il rubinetto del carburante ha
tre posizioni:
OFF: Con la leva in questa posizione, il
carburante non passa. Riportare
sempre la leva in questa posi-
zione quando il motore non è in
funzione.
ON: Con la leva in questa posizione, il
carburante passa al carburatore.
La marcia normale avviene con la
leva in questa posizione.
RES: Questo indica riserva. Se il carbu-
rante finisce durante la marcia,
spostare la leva in questa posi-
zione. RIEMPIRE IL SERBA-
TOIO ALLA PRIMA
OCCASIONE. RICORDARSI DI
METTERE LA LEVA SU “ON”
DOPO IL RIFORNIMENTO.
MANOPOLA DI AVVIAMENTO A
FREDDO
Quando è freddo, il motore richiede per
l’avviamento una miscela aria-carbu-
rante più ricca. Un circuito di avvia-
mento separato, controllato dalla
manopola di avviamento a freddo 1, ali-
menta questa miscela. Estrarre la mano-
pola di avviamento a freddo per aprire il
circuito per l’avviamento. Quando il
motore si è riscaldato, abbassarla per
chiudere il circuito.
MANOPOLA DI AVVIAMENTO A
CALDO
La manopola di avviamento a caldo
(rossa) 1 è usata per avviare un motore
caldo.
Utilizzare la manopola di avviamento a
caldo per avviare di nuovo il motore
immediatamente dopo averlo spento (il
motore è ancora caldo). Estraendo la
manopola di avviamento a caldo, aria
secondaria viene iniettata per impoverire
temporaneamente la miscela aria-carbu-
rante, consentendo al motore di essere
avviato più facilmente.
ATTENZIONE:
Dopo aver avviato il motore, accer-
tarsi di abbassare nuovamente la
manopola di avviamento a caldo.
1 - 12

SPEC

2 - 2
GENERAL SPECIFICATIONS
Oil capacity:
Engine oil
Periodic oil change 1.5 L (1.32 Imp qt, 1.59 US qt)
With oil filter replacement 1.6 L (1.41 Imp qt, 1.69 US qt)
Total amount 1.7 L (1.50 Imp qt, 1.80 US qt)
Coolant capacity (including all routes): 1.3 L (1.14 Imp qt, 1.37 US qt)
Air filter: Wet type element
Fuel:
Type Premium unleaded fuel with a research octane
number of 95 or higher. (Except for AUS)
Unleaded fuel only (For AUS)
Tank capacity 12 L (2.64 Imp gal, 3.17 US gal)
(For USA, CDN)
8.0 L (1.76 Imp gal, 2.11 US gal)
(Except for USA, CDN)
Reserve 1.6 L (0.35 Imp gal, 0.42 US gal)
(For USA, CDN)
1.4 L (0.31 Imp gal, 0.37 US gal)
(Except for USA, CDN)
Carburetor:
Type FCR-MX37
Manufacturer KEIHIN
Spark plug:
Type/manufacturer CR8E/NGK
U24ESR-N/DENSO
Gap 0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
Clutch type: Wet, multiple-disc
Transmission:
Primary reduction system Gear
Primary reduction ratio 57/17 (3.353)
Secondary reduction system Chain drive
Secondary reduction ratio 52/13 (4.000)
Transmission type Constant mesh, 5-speed
Operation Left foot operation
Gear ratio: 1st 31/13 (2.385)
2nd 28/16 (1.750)
3rd 28/21 (1.333)
4th 25/24 (1.042)
5th 22/27 (0.815)
Chassis:
Frame type Semi double cradle
Caster angle 27.1˚
Trail 117.4 mm (4.62 in)

2

SPEC

2 - 10
MAINTENANCE SPECIFICATIONS
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Spark plug M10S
´
1.0 1 13 1.3 9.4
Camshaft cap M6
´
1.0 10 10 1.0 7.2
Cylinder head blind plug screw M12
´
1.0 1 37 3.7 27
Cylinder head (stud bolt) M6
´
1.0 2 7 0.7 5.1
(stud bolt) M8
´
1.25 1 15 1.5 11
(bolt) M9
´
1.25 4 38 3.8 27
(nut) M6
´
1.0 2 10 1.0 7.2
Cylinder head cover M6
´
1.0 2 10 1.0 7.2
Oil pressure check bolt M6
´
1.0 1 10 1.0 7.2
Cylinder M6
´
1.0 1 10 1.0 7.2
Balancer weight M6
´
1.0 2 10 1.0 7.2
Balancer shaft driven gear M14
´
1.0 1 50 5.0 36
Timing chain guide (intake side) M6
´
1.0 2 10 1.0 7.2
Decompression shaft M6
´
1.0 1 7 0.7 5.1
Decompression cable guide M6
´
1.0 1 10 1.0 7.2
Timing chain tensioner M6
´
1.0 2 10 1.0 7.2
Timing chain tensioner cap bolt M6
´
1.0 1 7 0.7 5.1
Impeller M8
´
1.25 1 14 1.4 10
Radiator hose clamp M6
´
1.0 8 2 0.2 1.4
Coolant drain bolt M6
´
1.0 1 10 1.0 7.2
Water pump housing M6
´
1.0 4 10 1.0 7.2
Radiator M6
´
1.0 6 10 1.0 7.2
Radiator guard M6
´
1.0 2 10 1.0 7.2
Radiator pipe M6
´
1.0 1 10 1.0 7.2
Oil pump cover M4
´
0.7 1 3 0.3 2.2
Oil pump M6
´
1.0 3 10 1.0 7.2
Oil filter element drain bolt M6
´
1.0 1 10 1.0 7.2
Oil filter element cover M6
´
1.0 2 10 1.0 7.2
Oil strainer M6
´
1.0 2 10 1.0 7.2
Oil delivery pipe 1 (M10) M10 ´ 1.25 1 20 2.0 14
(M8) M8 ´ 1.25 2 18 1.8 13
Oil delivery pipe 2 M6 ´ 1.0 1 10 1.0 7.2
Oil hose M6 ´ 1.0 3 10 1.0 7.2
Oil hose clamp — 2 2 0.2 1.4
Oil strainer and frame M18 ´ 1.5 1 90 9.0 65
Carburetor joint clamp M4 ´ 0.7 2 3 0.3 2.2
Air filter joint clamp M6 ´ 1.0 1 3 0.3 2.2
Throttle cable cover M5 ´ 0.8 1 4 0.4 2.9
Air filter joint M5 ´ 0.8 2 5 0.5 3.6
Air filter joint and air filter case M5 ´ 0.8 5 1 0.1 0.7
Air filter element M6 ´ 1.0 1 2 0.2 1.4
Air filter case cover M6 ´ 1.0 4 4 0.4 2.9
Exhaust pipe (nut) M8 ´ 1.25 1 13 1.3 9.4
(bolt) M8 ´ 1.25 1 24 2.4 17
Exhaust pipe protector M6 ´ 1.0 3 10 1.0 7.2

3 - 2
INSP
ADJ

MAINTENANCE INTERVALS
SHIFT FORK, SHIFT CAM, GUIDE BAR
Inspect
c
Inspect wear
ROTOR NUT
Retighten
c

c

EXHAUST PIPE, SILENCER, PRO-
TECTOR
Inspect and retighten
Clean
Replace
c

c

c

c
* Whichever comes first
*SPARK ARRESTER
Clean
(Every six
months)
c
CRANK
Inspect and clean
c

c

CARBURETOR
Inspect, adjust and clean
c

c
When using a high-pres-
sure washer, make sure
that water does not enter
the accelerator pump.
SPARK PLUG
Inspect and clean
Replace
c

c

c

DRIVE CHAIN
Lubricate, slack, alignment
Replace
c

c

c
Use chain lube
Chain slack: 40 ~ 50 mm
(1.6 ~ 2.0 in)
COOLING SYSTEM
Check coolant level and leakage
Check radiator cap operation
Replace coolant
Inspect hoses
c

c

c

c

c
Every two years
OUTSIDE NUTS AND BOLTS
Retighten
c

c
Refer to “STARTING
AND BREAK-IN” section
in the CHAPTER 1.
AIR FILTER
Clean and lubricate
Replace
c

c

c
Use foam air-filter oil
FRAME
Clean and inspect
c

c

FUEL TANK, COCK
Clean and inspect
c

c

BRAKES
Adjust lever position and pedal height
Lubricate pivot point
Check brake disc surface
Check fluid level and leakage
Retighten brake disc bolts, caliper
bolts, master cylinder bolts and union
bolts
Replace pads
Replace brake fluid
c

c

c

c

c

c

c

c

c

c

c

c
Every one year
FRONT FORKS
Inspect and adjust
Replace oil
Replace oil seal
c

c

c

c

c
Suspension oil “01” ItemAfter
break-inEvery
race
Every
third race
or
500 km
(300 mi)Every
fifth race
or
1,000 km
(600 mi)
As re-
quiredRemarks


3

3 - 12
INSP
ADJ
AIR FILTER CLEANING
2. Adjust:
lDecompression lever free play
Adjustment steps:
lLoosen the locknut 1.
lTurn the adjuster 2 in or out until the
adjustment is suitable.
lTighten the locknut.
CAUTION:
After the adjustment, start the engine
and make sure that the engine does not
stop when the handlebar is turned fully
both ways. If the decompression cable is
too tense, the engine will stop by the
decompression system.
AIR FILTER CLEANING
NOTE:
Proper air filter maintenance is the biggest key
to preventing premature engine wear and
damage.
CAUTION:
Never run the engine without the air filter
element in place; this would allow dirt and
dust to enter the engine and cause rapid
wear and possible engine damage.
1. Remove:
lSeat
2. Disconnect:
lTaillight lead connectors 1
3. Remove:
lAir filter case cover 2
4. Remove:
lFitting bolt 1
lWasher 2
lAir filter element 3
lAir filter guide 4