2006 YAMAHA WR 250F fuel cap

1 - 1
GEN
INFODESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1Clutch lever
2Hot starter lever
3Engine stop switch
4Multi-function display
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.
A
BCD
E
F G
1234
5
6
7
8
9 0
HI
J
K
L M
N O
RENSEIGNEMENTS GENERAUX
DESCRIPTION
1Levier d’embrayage
2Levier de démarrage à chaud
3Coupe-circuit du moteur
4Ecran multifonction
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

GENERAL SPECIFICATIONS
2 - 2
SPEC
Oil capacity:
Engine oil
Periodic oil change 1.2 L (1.06 Imp qt, 1.27 US qt)
With oil filter replacement 1.3 L (1.14 Imp qt, 1.37 US qt)
Total amount 1.4 L (1.23 Imp qt, 1.48 US qt)
Coolant capacity (including all routes): 1.26 L (1.11 Imp qt, 1.33 US qt)
Air filter: Wet type element
Fuel:
Type Premium unleaded gasoline only with a
research octane number of 95 or higher.
Tank capacity 8.0 L (1.76 Imp gal, 2.11 US gal)
Reserve 1.1 L (0.24 Imp gal, 0.29 US gal)
Carburetor:
Type FCR-MX37
Manufacturer KEIHIN
Spark plug:
Type/manufacturer CR8E/NGK (resistance type)
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: USA, ZA, CDN EUROPE, AUS, NZ
Frame type Semi double cradle←
Caster angle 27.5°27.1°
Trail 121 mm (4.76 in) 117 mm (4.61 in)
Tire:
Type With tube
Size (front) 80/100-21 51M (For USA, CDN and ZA)
90/90-21 54R (For EUROPE, AUS and NZ)
Size (rear) 100/100-18 59M (For USA, CDN and ZA)
130/90-18 69R (For EUROPE, AUS and NZ)
Tire pressure (front and rear) 100 kPa (1.0 kgf/cm
2, 15 psi)
1
2
3
4
5
6
7

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
7Cylinder head breather hose
8Throttle position sensor lead
9Neutral switch lead
0Oil hoseAClutch cable
BStarter motor lead
CNegative battery lead
DCable guide
EBrake hose
FRectifier/regulator lead
GAC magneto lead
HRectifier/regulator
ICarburetor breather hoseJCarburetor overflow hose
KCoolant 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
B
B-B
A
Ô3B
Ó3 Ö
C
× EF
9
GÙ
H
Ú
Û
1
È
3
Ê
4
Ë
5
6
7 Ì
ÍÎ
Ï
Ñ Ð
8
0 3
ÒÜ II
JK
9 A 2
É
0
9A
ØD ØD
Õ

3 - 2
INSP
ADJ
MAINTENANCE INTERVALS
ROTOR NUT
Retighten
EXHAUST PIPE, SILENCER,
PROTECTOR
Inspect and retighten
Clean
Replace* Whichever comes first
*SPARK ARRESTER
Clean
(Every
six
months)
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
AIR INDUCTION SYSTEM
Inspect and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAINUse chain lube
Chain slack:
48 ~ 58 mm (1.9 ~ 2.3 in) Lubricate, slack, alignment
Replace
COOLING SYSTEM
Check coolant level and leakage
Check radiator cap operation
Replace coolantEvery two years
Inspect hoses
OUTSIDE NUTS AND BOLTS Refer to “STARTING AND
BREAK-IN” section in the
CHAPTER 1. Retighten
AIR FILTER
Clean and lubricate Use foam air-filter oil or
equivalent oil
Replace
OIL FILTER
Replace
OIL STRAINER (frame)
Clean
FRAME
Clean and inspect
FUEL TANK, COCK
Clean and inspect
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 Every one yearItemAfter
break-inEvery
race
Every third
(or
500 km)Every fifth
(or
1,000 km)As
requiredRemarks
1
2
3
4
5
6
7

3 - 16
INSP
ADJ
PRE-OPERATION INSPECTION AND MAINTENANCE
EC320000
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good operating condition.
Before using this machine, check the following points.
GENERAL INSPECTION AND MAINTENANCE
Item Routine Page
CoolantCheck that coolant is filled up to the radiator cap.
Check the cooling system for leakage.P.3-21 ~ 29
FuelCheck that a fresh gasoline is filled in the fuel tank. Check the
fuel line for leakage.P.1-49
Engine oilCheck that the oil level is correct. Check the crankcase and
frame oil line for leakage.P.3-39 ~ 47
Gear shifter and clutchCheck that gears can be shifted correctly in order and that the
clutch operates smoothly.P.3-29 ~ 31
Throttle grip/HousingCheck that the throttle grip operation and free play are correctly
adjusted. Lubricate the throttle grip and housing, if necessary.P.3-31 ~ 33
Brakes Check the play of front brake and effect of front and rear brake. P.3-65 ~ 77
Drive chainCheck drive chain slack and alignment. Check that the drive
chain is lubricated properly.P.3-79 ~ 83
WheelsCheck for excessive wear and tire pressure. Check for loose
spokes and have no excessive play.P.3-99 ~ 101
SteeringCheck that the handlebar can be turned smoothly and have no
excessive play.P.3-101 ~ 103
Front forks and rear shock
absorberCheck that they operate smoothly and there is no oil leakage. P.3-85 ~ 97
Cables (wires)Check that the clutch and throttle cables move smoothly. Check
that they are not caught when the handlebars are turned or when
the front forks travel up and down.—
Exhaust pipeCheck that the exhaust pipe is tightly mounted and has no
cracks.P.4-7 ~ 11
Rear wheel sprocket Check that the rear wheel sprocket tightening bolt is not loose. P.3-77
Lubrication Check for smooth operation. Lubricate if necessary. P.3-105
Bolts and nuts Check the chassis and engine for loose bolts and nuts. P.1-59
Lead connectorsCheck that the AC magneto, CDI unit, and ignition coil are
connected tightly.P.1-9
SettingsIs the machine set suitably for the condition of the racing course
and weather or by taking into account the results of test runs
before racing? Are inspection and maintenance completely
done?P.7-1 ~ 40

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 - 103
INSP
ADJ
Loosen the steering ring nut
one turn.
Retighten the steering ring nut
using the steering nut wrench.
WARNING
Avoid over-tightening.
T R..
Steering ring nut
(final tightening):
7 Nm
(0.7 m  kg, 5.1 ft  lb)
Check the steering stem by
turning it lock to lock. If there is
any binding, remove the steer-
ing stem assembly and inspect
the steering bearings.
Install the washer
5, upper
bracket
6, washer
7, steering
stem nut
8, steering stem cap
9, handlebar
0, handlebar
upper holder
A and headlight
B.
NOTE:The handlebar upper holder
should be installed with the
punched mark
a forward.
Install the handlebar so that the
marks
b are in place on both
sides.
Insert the end of the fuel
breather hose
C into the hole in
the steering stem cap.
CAUTION:
First tighten the bolts on the
front side of the handlebar
upper holder, and then tighten
the bolts on the rear side.
T R..
Steering stem nut:
145 Nm
(14.5 m  kg, 105 ft  lb)
Handlebar upper holder:
28 Nm
(2.8 m  kg, 20 ft  lb)
Pinch bolt (upper
bracket):
23 Nm
(2.3 m  kg, 17 ft  lb)
Headlight (left and right):
7 Nm
(0.7 m  kg, 5.1 ft  lb)
Headlight (lower):
7 Nm
(0.7 m  kg, 5.1 ft  lb)
Dévisser d’un tour l’écrou de blo-
cage de la direction.
Resserrer l’écrou de blocage de la
direction à l’aide de la clé pour
écrou de direction.
AVERTISSEMENT
Eviter de serrer à l’excès.
T R..
Ecrou de blocage de la
direction (serrage final):
7 Nm
(0,7 m  kg, 5,1 ft  lb)
Contrôler la colonne de direction
en la tournant d’une butée à l’autre.
S’il y a la moindre gêne, démonter
la colonne de direction et contrôler
les paliers de la direction.
Monter la rondelle 5, le té supé-
rieur 6, la rondelle 7, l’écrou de
blocage de la direction 8, le capu-
chon de la colonne de direction 9,
le guidon 0, le demi-palier de gui-
don supérieur A et le phare B.
N.B.:
Le demi-palier supérieur du guidon
doit être monté avec son poinçon
a vers l’avant.
Monter le guidon de façon à ce que
les repères b soient en place des
deux côtés.
Introduire l’extrémité de la durit de
mise à l’air du réservoir de carbu-
rant C dans le trou du capuchon de
la colonne de direction.
ATTENTION:
Serrer d’abord les boulons situés à
l’avant du demi-palier supérieur
du guidon, puis les boulons situés à
l’arrière.
T R..
Ecrou de direction:
145 Nm
(14,5 m  kg, 105 ft  lb)
Demi-palier supérieur de
guidon:
28 Nm
(2,8 m  kg, 20 ft  lb)
Boulon de pincement (té
supérieur):
23 Nm
(2,3 m  kg, 17 ft  lb)
Phare (gauche et droit):
7 Nm
(0,7 m  kg, 5,1 ft  lb)
Phare (inférieur):
7 Nm
(0,7 m  kg, 5,1 ft  lb)
CHASSIS
CHASSIS