2007 YAMAHA WR 250F wheel torque

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GEN
INFO
TORQUE-CHECK POINTS
Frame construction Frame to rear frame
Combined seat and fuel tank Fuel tank to frame
Exhaust system Silencer to rear frame
Engine mounting Frame to engine
Engine bracket to engine
Engine bracket to frame
Steering Steering stem to handlebar Steering stem to frame
Steering stem to upper bracket
Upper bracket to handlebar
Suspension Front Steering stem to front fork Front fork to upper bracket
Front fork to lower bracket
Rear For link type Assembly of links
Link to frame
Link to rear shock absorber
Link to swingarm
Rear Installation of rear
shock absorberRear shock absorber to frame
Rear Installation of swingarm Tightening of pivot shaft
Wheel Installation of wheel Front Tightening of wheel axle
Tightening of axle holder
Rear Tightening of wheel axle
Wheel to rear wheel sprocket
Brake Front Brake caliper to front fork
Brake disc to wheel
Tightening of union bolt
Brake master cylinder to handlebar
Tightening of bleed screw
Tightening of brake hose holder
Rear Brake pedal to frame
Brake disc to wheel
Tightening of union bolt
Brake master cylinder to frame
Tightening of bleed screw
Tightening of brake hose holder
Fuel system Fuel tank to fuel cock
Lubrication system Tightening of oil hose clamp
NOTE:Concerning the tightening torque, refer to
“MAINTENANCE SPECIFICATIONS” sec-
tion in the CHAPTER 2.
TORQUE-CHECK POINTS

MAINTENANCE SPECIFICATIONS
2 - 11
SPEC
NOTE:
- marked portion shall be checked for torque tightening after break-in. Hot starter cable adjust bolt and locknut M6 × 0.75 1 4 0.4 2.9
Air filter case M6 × 1.0 2 8 0.8 5.8
Air filter joint and air filter case M5 × 0.8 1 4 0.4 2.9
Exhaust pipe M8 × 1.25 2 20 2.0 14
Exhaust pipe protector M6 × 1.0 3 10 1.0 7.2
Silencer M8 × 1.25 2 30 3.0 22
Silencer clamp M8 × 1.25 1 16 1.6 11
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 1 10 1.0 7.2
Air induction pipe clamp M6 × 1.0 1 4 0.4 2.9
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
Crankcase M6 × 1.0 11 12 1.2 8.7
Crankcase bearing stopper M6 × 1.0 11 10 1.0 7.2
Crankcase bearing stopper (crankshaft) M6 × 1.0 4 10 1.0 7.2
Left crankcase cover M6 × 1.0 8 10 1.0 7.2
Idle gear cover (starter motor) M6 × 1.0 3 10 1.0 7.2
Idle gear plate M6 × 1.0 2 10 1.0 7.2
Right crankcase cover M6 × 1.0 6 10 1.0 7.2
Clutch cover M6 × 1.0 7 10 1.0 7.2
Crankcase oil drain bolt M10 × 1.25 1 20 2.0 14
Drive chain sprocket cover M6 × 1.0 2 8 0.8 5.8
Kick shaft ratchet wheel guide M6 × 1.0 2 12 1.2 8.7
Kickstarter crank M8 × 1.25 1 33 3.3 24
Primary drive gear M18 × 1.0 1 75 7.5 54
Clutch spring M6 × 1.0 5 10 1.0 7.2
Clutch boss M16 × 1.0 1 60 6.0 43
Clutch cable locknut M8 × 1.25 2 7 0.7 5.1
Push lever shaft M6 × 1.0 1 10 1.0 7.2
Drive sprocket M18 × 1.0 1 75 7.5 54
Drive axle oil seal stopper M6 × 1.0 2 10 1.0 7.2
Segment M8 × 1.25 1 30 3.0 22
Shift guide M6 × 1.0 2 10 1.0 7.2
Stopper lever M6 × 1.0 1 10 1.0 7.2
Shift pedal M6 × 1.0 1 12 1.2 8.7 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb

MAINTENANCE SPECIFICATIONS
2 - 14
SPEC
NOTE:
1. First, tighten the steering ring nut approximately 38 Nm (3.8 m  kg, 27 ft  lb) by using the steer-
ing nut wrench, then loosen the steering ring nut one turn.
2. Retighten the steering ring nut 7 Nm (0.7 m  kg, 5.1 ft  lb). Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Upper bracket and outer tube M8 × 1.25 4 21 2.1 15
Lower bracket and outer tube M8 × 1.25 4 21 2.1 15
Upper bracket and steering stem M24 × 1.0 1 145 14.5 105
Handlebar upper holder and handlebar lower
holderM8 × 1.25 4 28 2.8 20
Handlebar lower holder and upper bracket M10 × 1.25 2 34 3.4 24
Steering stem and steering ring nut M28 × 1.0 1 Refer to NOTE.
Front fork and front fork cap bolt M51 × 1.5 2 30 3.0 22
Front fork and base valve M30 × 1.0 2 55 5.5 40
Front fork cap bolt and damper rod M12 × 1.25 2 29 2.9 21
Front fork bleed screw and front fork cap bolt M5 × 0.8 2 1 0.1 0.7
Front fork and front fork protector M6 × 1.0 6 7 0.7 5.1
Front fork protector and brake hose holder M6 × 1.0 2 7 0.7 5.1
Throttle grip cap M5 × 0.8 2 4 0.4 2.9
Front brake master cylinder M6 × 1.0 2 9 0.9 6.5
Brake lever mounting bolt M6 × 1.0 1 6 0.6 4.3
Brake lever mounting nut M6 × 1.0 1 6 0.6 4.3
Brake lever position locknut M6 × 1.0 1 5 0.5 3.6
Front brake hose guide and front brake hose
guide bracketM5 × 0.8 1 4 0.4 2.9
Front brake hose guide and lower bracket M6 × 1.0 1 4 0.4 2.9
Clutch lever holder M5 × 0.8 2 4 0.4 2.9
Clutch lever mounting nut M6 × 1.0 1 4 0.4 2.9
Hot starter lever holder M5 × 0.8 2 4 0.4 2.9
Hot starter lever mounting nut M5 × 0.8 1 2 0.2 1.4
Front brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Front brake hose union bolt M10 × 1.25 2 30 3.0 22
Front brake caliper M8 × 1.25 2 23 2.3 17
Front brake caliper and brake hose holder M6 × 1.0 1 10 1.0 7.2
Pad pin plug M10 × 1.0 2 3 0.3 2.2
Front brake caliper and pad pin M10 × 1.0 1 18 1.8 13
Rear brake caliper and pad pin M10 × 1.0 1 18 1.8 13
Brake caliper and bleed screw M8 × 1.25 2 6 0.6 4.3
Front wheel axle and axle nut M16 × 1.5 1 90 9.0 65
Front wheel axle holder M8 × 1.25 4 21 2.1 15
Front brake disc M6 × 1.0 6 12 1.2 8.7
Rear brake disc M6 × 1.0 6 14 1.4 10
Brake pedal M8 × 1.25 1 26 2.6 19
Rear brake master cylinder M6 × 1.0 2 10 1.0 7.2
Rear brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Rear brake hose union bolt M10 × 1.25 2 30 3.0 22
Rear wheel axle and axle nut M20 × 1.5 1 125 12.5 90

MAINTENANCE SPECIFICATIONS
2 - 15
SPEC
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Nipple (spoke)—72 3 0.3 2.2
Rear wheel sprocket M8 × 1.25 6 50 5.0 36
Rear brake disc cover M6 × 1.0 2 10 1.0 7.2
Rear brake caliper protector M6 × 1.0 2 7 0.7 5.1
Drive chain puller adjust bolt and locknut M8 × 1.25 2 19 1.9 13
Engine mounting:
Engine and engine bracket (front) M10 × 1.25 1 53 5.3 38
Engine and frame (lower) M10 × 1.25 1 53 5.3 38
Upper engine bracket and frame M8 × 1.25 4 34 3.4 24
Lower engine bracket and frame M8 × 1.25 4 34 3.4 24
Engine and engine bracket (upper) M10 × 1.25 1 55 5.5 40
Engine guard M6 × 1.0 3 7 0.7 5.1
Regulator M6 × 1.0 2 7 0.7 5.1
Pivot shaft and nut M16 × 1.5 1 85 8.5 61
Relay arm and swingarm M14 × 1.5 1 70 7.0 50
Relay arm and connecting rod M14 × 1.5 1 80 8.0 58
Connecting rod and frame M14 × 1.5 1 80 8.0 58
Rear shock absorber and frame M10 × 1.25 1 56 5.6 40
Rear shock absorber and relay arm M10 × 1.25 1 53 5.3 38
Rear frame (upper) M8 × 1.25 1 38 3.8 27
Rear frame (lower) M8 × 1.25 2 32 3.2 23
Swingarm and brake hose holder M5 × 0.8 4 2 0.2 1.4
Swingarm and patch M4 × 0.7 4 2 0.2 1.4
Upper drive chain tensioner M8 × 1.25 1 16 1.6 11
Lower drive chain tensioner M8 × 1.25 1 16 1.6 11
Drive chain support M6 × 1.0 3 7 0.7 5.1
Seal guard and swingarm M5 × 0.8 4 6 0.6 4.3
Fuel tank M6 × 1.0 2 9 0.9 6.5
Fuel cock M6 × 1.0 2 4 0.4 2.9
Seat set bracket and fuel tank M6 × 1.0 1 7 0.7 5.1
Fuel tank bracket and fuel tank M6 × 1.0 4 7 0.7 5.1
Air scoop and fuel tank M6 × 1.0 6 7 0.7 5.1
Air scoop and radiator guard (lower) M6 × 1.0 2 6 0.6 4.3
Front fender M6 × 1.0 4 7 0.7 5.1
Rear fender (front) M6 × 1.0 2 7 0.7 5.1
Rear fender (rear) M6 × 1.0 2 11 1.1 8.0
Side cover M6 × 1.0 2 7 0.7 5.1
Seat M8 × 1.25 2 23 2.3 17
Multi-function display bracket and upper
bracketM6 × 1.0 2 7 0.7 5.1
Multi-function display M5 × 0.8 2 4 0.4 2.9
Plate 1 and front fork protector M5 × 0.8 2 4 0.4 2.9
Plate 2 and front fork protector—2 0.5 0.05 0.36

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INSP
ADJ
2. Inspect:
Bearing free play
Exist play
→ Replace.
EC36U013STEERING HEAD INSPECTION
AND ADJUSTMENT
1. Elevate the front wheel by plac-
ing a suitable stand under the
engine.
2. Check:
Steering stem
Grasp the bottom of the forks
and gently rock the fork
assembly back and forth.
Free play
→ Adjust steering
head.
3. Check:
Steering smooth action
Turn the handlebar lock to
lock.
Unsmooth action
→ Adjust
steering ring nut.
4. Adjust:
Steering ring nut
Steering ring nut adjustment
steps:
Remove the headlight.
Remove the handlebar and
upper bracket.
Loosen the steering ring nut
1
using the steering nut wrench
2.
Steering nut wrench:
YU-33975/90890-01403
Tighten the steering ring nut
3
using steering nut wrench
4.
NOTE:Apply the lithium soap base
grease on the thread of the
steering stem.
Set the torque wrench to the
steering nut wrench so that they
form a right angle.
Steering nut wrench:
YU-33975/90890-01403
T R..
Steering ring nut
(initial tightening):
38 Nm
(3.8 m  kg, 27 ft  lb)
2. Contrôler:
Jeu des roulements
Il y a du jeu → Remplacer.
CONTROLE ET REGLAGE DE LA
TETE DE FOURCHE
1. Surélever la roue avant en plaçant
un support adéquat sous le moteur.
2. Contrôler:
Colonne de direction
Saisir les bras de fourche par le
bas et secouer doucement la four-
che d’avant en arrière.
Jeu → Régler la tête de fourche.
3. Contrôler:
Fonctionnement régulier de la
direction
Tourner le guidon de butée à
butée.
Fonctionnement irrégulier →
Régler l’écrou de blocage de la
direction.
4. Régler:
Ecrou de blocage de la direction
Etapes de réglage de l’écrou de blo-
cage de la direction:
Déposer le phare.
Déposer le guidon et le té supé-
rieur.
Desserrer l’écrou de blocage de la
direction 1 à l’aide de la clé pour
écrou de direction 2.
Clé pour écrou de
direction:
YU-33975/90890-01403
Serrer l’écrou de blocage de la
direction 3 à l’aide de la clé pour
écrou de direction 4.
N.B.:
Appliquer de la graisse à savon de
lithium sur le filet de la colonne de
direction.
Adapter la clé dynamométrique à
la clé pour écrou de direction de
manière à ce qu’elles forment un
angle droit.
Clé pour écrou de
direction:
YU-33975/90890-01403
T R..
Ecrou de blocage de la
direction (serrage initial):
38 Nm
(3,8 m  kg, 27 ft  lb)
CHASSIS
CHÂSSIS

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ENGAC MAGNETO AND STARTER CLUTCH
AC MAGNETO AND STARTER CLUTCH
Extent of removal:
1 Starter clutch/wheel gear removal
2 Rotor removal
3 Pickup coil/stator removal
Extent of removal Order Part name Q’ty Remarks
AC MAGNETO AND STATOR REMOVAL
Preparation for removal Drain the engine oil. Refer to “ENGINE OIL REPLACEMENT” section in
the CHAPTER 3.
Seat and fuel tank Refer to “SEAT, FUEL TANK AND SIDE COVERS”
section in the CHAPTER 3.
Disconnect the AC magneto lead.
1 Shift pedal 1
2 Cover (torque limiter) 1
3 Torque limiter 1 Do not disassemble.
4 Crankcase cover (left) 1
5 Gasket 1
6 Dowel pin 2
31