2007 YAMAHA WR 450F oil

SPEC
2 - 11 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 28 2.8 20
Cylinder head (stud bolt) M8 × 1.25 1 15 1.5 11
(bolt) M10 × 1.25 4 Refer to NOTE.*
1
(bolt) M6 × 1.0 2 10 1.0 7.2
Cylinder head cover M6 × 1.0 2 10 1.0 7.2
Cylinder M6 × 1.0 1 10 1.0 7.2
Timing chain tensioner M6 × 1.0 2 10 1.0 7.2
Tensioner cap bolt M6 × 1.0 1 7 0.7 5.1
Timing chain guide (rear) M6 × 1.0 2 10 1.0 7.2
Exhaust pipe (nut) M8 × 1.25 1 20 2.0 14
(bolt) M8 × 1.25 1 20 2.0 14
Silencer M8 × 1.25 2 30 3.0 22
Silencer clamp M8 × 1.25 1 16 1.6 11
Exhaust pipe protector M6 × 1.0 3 10 1.0 7.2
Spark arrester M5 × 0.8 4 7 0.7 5.1
Silencer cap M5 × 0.8 6 5 0.5 3.6
Air induction pipe M6 × 1.0 2 10 1.0 7.2
Air cut-off valve assembly and bracket M6 × 1.0 2 10 1.0 7.2
Bracket (air cut-off valve) and frame M6 × 1.0 2 7 0.7 5.1
Carburetor joint M6 × 1.0 3 10 1.0 7.2
Carburetor joint clamp M4 × 0.7 1 3 0.3 2.2
Air filter case M6 × 1.0 2 8 0.8 5.8
Air filter joint clamp M6 × 1.0 1 3 0.3 2.2
Air filter joint and air filter case M5 × 0.8 1 4 0.4 2.9
Throttle cable adjust bolt and locknut M6 × 0.75 1 4 0.4 2.9
Throttle cable (pull) M6 × 1.0 1 4 0.4 2.9
Throttle cable (return) M12 × 1.0 1 11 1.1 8.0
Throttle cable cover M5 × 0.8 2 4 0.4 2.9
Hot starter plunger M12 × 1.0 1 2 0.2 1.4
Hot starter cable adjust bolt and locknut M6 × 0.75 1 4 0.4 2.9
Air filter element M6 × 1.0 1 2 0.2 1.4
Radiator stay M6 × 1.0 6 7 0.7 5.1
Radiator M6 × 1.0 4 10 1.0 7.2
Radiator hose clamp M6 × 1.0 8 2 0.2 1.4
Radiator pipe 1, 2 M10 × 1.0 2 10 1.0 7.2
Impeller M8 × 1.25 1 14 1.4 10
Water pump housing cover M6 × 1.0 3 10 1.0 7.2
Coolant drain bolt M6 × 1.0 1 10 1.0 7.2
Oil pump cover M4 × 0.7 1 2 0.2 1.4
Oil pump M6 × 1.0 2 10 1.0 7.2
Oil pump drive gear shaft M6 × 1.0 1 10 1.0 7.2
MAINTENANCE SPECIFICATIONS

SPEC
2 - 12
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
NOTE:
*1: Tighten the cylinder head bolts to 30 Nm (3.0 m  kg, 22 ft  lb) in the proper tightening sequence,
remove and retighten the cylinder head bolts to 20 Nm (2.0 m  kg, 14 ft  lb) in the proper tightening
sequence, and then tighten the cylinder head bolts further to reach the specified angle 180° in the
proper tightening sequence.Engine oil drain bolt (oil filter) M6 × 1.0 1 10 1.0 7.2
Oil filter cover M6 × 1.0 2 10 1.0 7.2
Oil check bolt (cylinder head) M6 × 1.0 1 10 1.0 7.2
Oil hose clamp—220.21.4
Clutch cover M6 × 1.0 7 10 1.0 7.2
Crankcase cover (right) M6 × 1.0 8 10 1.0 7.2
M6 × 1.0 2 12 1.2 8.7
Crankcase cover (left) M6 × 1.0 8 10 1.0 7.2
Idle gear cover (starter motor) M6 × 1.0 2 10 1.0 7.2
Crankcase M6 × 1.0 12 12 1.2 8.7
Clutch cable holder M6 × 1.0 1 10 1.0 7.2
Oil drain bolt (crankcase right) M10 × 1.25 1 20 2.0 14
(crankcase left) M6 × 1.0 1 20 2.0 14
Oil check bolt (crankcase) M6 × 1.0 1 10 1.0 7.2
Oil strainer M6 × 1.0 1 10 1.0 7.2
Crankcase bearing stopper M6 × 1.0 4 14 1.4 10
Crankcase bearing stopper M6 × 1.0 8 10 1.0 7.2
Drive axle oil seal stopper M6 × 1.0 2 10 1.0 7.2
Ratchet wheel guide M6 × 1.0 2 12 1.2 8.7
Kickstarter M8 × 1.25 1 33 3.3 24
Screw (kickstarter) M6 × 1.0 1 7 0.7 5.1
Starter clutch M6 × 1.0 6 16 1.6 11
Primary drive gear M20 × 1.0 1 110 11.0 80
Clutch boss M20 × 1.0 1 75 7.5 54
Clutch cable adjust bolt and locknut M8 × 1.0 1 4 0.4 2.9
Clutch spring M6 × 1.0 6 10 1.0 7.2
Balancer M10 × 1.0 1 45 4.5 32
Balancer driven gear M14 × 1.0 1 50 5.0 36
Balancer weight plate M6 × 1.0 3 10 1.0 7.2
Drive sprocket M20 × 1.0 1 75 7.5 54
Drive sprocket cover M6 × 1.0 2 8 0.8 5.8
Shift pedal M6 × 1.0 1 12 1.2 8.7
Shift guide M6 × 1.0 2 10 1.0 7.2
Stopper lever M6 × 1.0 1 10 1.0 7.2
Segment M8 × 1.25 1 30 3.0 22 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
MAINTENANCE SPECIFICATIONS

SPEC
2 - 13
EC212201
CHASSIS
Item Standard Limit
Steering system:
Steering bearing type Taper roller bearing ----
Front suspension: USA, CDN EUROPE AUS, NZ, ZA
Front fork travel 300 mm (11.8 in)← ←
Fork spring free length 460 mm (18.1 in)← ←
Spring rate, STD K = 4.5 N/mm
(0.459 kg/mm,
25.7 lb/in)← ←
Optional spring/spacer Yes← ←
Oil capacity 648 cm
3
(22.8 Imp oz,
21.9 US oz) 655 cm3
(23.1 Imp oz,
22.1 US oz) ←
Oil level 132 mm (5.20 in) 125 mm (4.92 in)←

(From top of outer tube with inner
tube and damper rod fully com-
pressed without spring.)95 ~ 150 mm
(3.74 ~ 5.91 in)← ←
Oil grade Suspension oil
“S1”← ←
Inner tube outer diameter 48 mm (1.89 in)← ←
Front fork top end Zero mm (Zero in)← ←
Rear suspension: USA, CDN EUROPE AUS, NZ, ZA
Shock absorber travel 130 mm (5.12 in)← ←
Spring free length260 mm (10.24 in)← ←
Fitting length 252.5 mm (9.94 in) 251.5 mm (9.90 in) 252.5 mm (9.94 in)
238.5 ~ 258.5 mm
(9.39 ~ 10.18 in)← ←
Spring rate, STD K = 54.0 N/mm
(5.50 kg/mm,
308.0 lb/in)← ←
Optional spring Yes← ←
Enclosed gas pressure
1,000 kPa
(10 kg/cm2, 142 psi)
← ←
Swingarm:
Swingarm free play limit
End ---- 1.0 mm
(0.04 in)
MAINTENANCE SPECIFICATIONS

SPEC
2 - 18
EC212300
ELECTRICAL
Item Standard Limit
Ignition system:
Advancer type Electrical ----
C.D.I.:
Pickup coil resistance (color) 248 ~ 372 Ω at 20 °C (68 °F)
(White – Red)----
CDI unit-model/manufacturer 5TJ-E0/YAMAHA (For USA)
5TJ-F0/YAMAHA
(Except for USA)----
----
Ignition coil:
Model/manufacturer 5TA-10/DENSO ----
Minimum spark gap 6 mm (0.24 in) ----
Primary winding resistance 0.08 ~ 0.10 Ω at 20 °C (68 °F) ----
Secondary winding resistance 4.6 ~ 6.8 kΩ at 20 °C (68 °F) ----
Charging system:
System type AC magneto ----
Model (stator)/manufacturer 5TJ 40/YAMAHA ----
Normal output 14 V/120 W at 5,000 r/min ----
Charging coil resistance (color) 0.288 ~ 0.432 Ω at 20 °C (68 °F)
(White – Ground)----
Lighting coil resistance (color) 0.224 ~ 0.336 Ω at 20 °C (68 °F)
(Yellow – Ground)----
Rectifier/regulator:
Regulator type Semiconductor short circuit ----
Model/manufacture SH770AA/SHINDENGEN ----
Regulated voltage (AC) 12.5 ~ 13.5 V ----
Regulated voltage (DC) 14.0 ~ 15.0 V ----
Rectifier capacity (AC) 12 A ----
Rectifier capacity (DC) 8 A ----
Electric starting system:
Type Constant mesh ----
Starter motor:
Model/manufacturer 5UM20/YAMAHA ----
Operation voltage 12 V ----
Output 0.48 kW ----
Armature coil resistance 0.0117 ~ 0.0143 Ω at 20 °C
(68 °F)----
Brush overall length 7 mm (0.28 in) 3.5 mm
(0.14 in)
Brash quantity 2 pcs. ----
Spring force 3.92 ~ 5.88 N
(400 ~ 600 g, 14.1 ~ 21.2 oz)----
Commutator diameter 17.6 mm (0.69 in) 16.6 mm
(0.65 in)
Mica undercut (depth) 1.5 mm (0.06 in) ----
MAINTENANCE SPECIFICATIONS

SPEC
2 - 19
NOTE:
Tighten the rotor nut to 65 Nm (6.5 m  kg, 47 ft  lb), loosen and retighten the rotor nut to 65 Nm
(6.5 m  kg, 47 ft  lb). Starter relay:
Model/manufacturer 2768090-A/JIDECO ----
Amperage rating 180 A ----
Coil winding resistance 4.2 ~ 4.6 Ω at 20 °C (68 °F) ----
Starting circuit cut-off relay:
Model/manufacturer ACM33221 M06/MATSUSHITA ----
Coil winding resistance 75.69 ~ 92.51 Ω at 20 °C (68 °F) ----
Fuse (amperage × quantity):
Main fuse 10 A × 1 ----
Reserve fuse 10 A × 1 ----
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Stator M5 × 0.8 2 7 0.7 5.1
Holder (AC magneto lead) M5 × 0.8 2 10 1.0 7.2
Rotor M12 × 1.25 1 Refer to NOTE.
Neutral switch M5 × 0.8 2 4 0.4 2.9
Starter motor M6 × 1.0 2 10 1.0 7.2
Starter relay terminal M6 × 1.0 2 4 0.4 2.9
Pick-up coil M6 × 1.0 2 10 1.0 7.2 Item Standard Limit
MAINTENANCE SPECIFICATIONS

SPEC
2 - 14 Roue:
Type de roue avant Roue à rayons ----
Type de roue arrière Roue à rayons ----
Taille/matériau de la jante avant 21 × 1,60/Aluminium ----
Taille/matériau de la jante arrière 18 × 2,15/Aluminium ----
Limite de voilage de la jante:
Radial ---- 2,0 mm
(0,08 in)
Latéral ---- 2,0 mm
(0,08 in)
Chaîne de transmission:
Type/fabricant DID520VM/DAIDO ----
Nombre de maillons 113 + attache ----
Jeu de la chaîne 48 à 58 mm (1,9 à 2,3 in) ----
Longueur de la chaîne (15 maillons) ---- 239,3 mm
(9,42 in)
Frein à disque avant:
Diamètre extérieur du disque × Epais-
seur250 × 3,0 mm (9,84 × 0,12 in) 250 × 2,5 mm
(9,84 × 0,10 in)
Epaisseur de plaquette 4,4 mm (0,17 in) 1,0 mm
(0,04 in)
Diamètre intérieur du maître cylindre 11,0 mm (0,433 in) ----
Diamètre intérieur du cylindre d’étrier 27,0 mm (1,063 in) × 2 ----
Type de liquide de frein DOT n°4 ----
Frein à disque arrière:
Diamètre extérieur du disque × Epais-
seur245 × 4,0 mm (9,65 × 0,16 in) 245 × 3,5 mm
(9,65 × 0,14 in)
Limite de déflexion ---- 0,15 mm
(0,006 in)
Epaisseur de plaquette 6,4 mm (0,25 in) 1,0 mm
(0,04 in)
Diamètre intérieur du maître cylindre 11,0 mm (0,433 in) ----
Diamètre intérieur du cylindre d’étrier 25,4 mm (1,000 in) × 1 ----
Type de liquide de frein DOT n°4 ----
Levier et pédale de frein:
Position du levier de frein 95 mm (3,74 in) ----
Hauteur de la pédale de frein
(distance verticale au-dessus du som-
met du repose-pied)10 mm (0,39 in) ----
Garde du levier d’embrayage
(à l’extrémité du levier)8 à 13 mm (0,31 à 0,51 in) ----
Jeu de la poignée des gaz 3 à 5 mm (0,12 à 0,20 in) ---- Elément Standard Limite
CARACTERISTIQUES D’ENTRETIEN

2 - 21
SPECLUBRICATION DIAGRAMS
LUBRICATION DIAGRAMS
1Oil filter element
2Oil pump
3Drive axle
4Main axle
5Crankshaft
6Connecting rod
ÈFrom cylinder
ÉTo oil tank

2 - 22
SPECLUBRICATION DIAGRAMS
1Intake camshaft
2Exhaust camshaft
ÈTo main axle
ÉFrom oil pump