tire size YAMAHA WR 250F 2006 Owners Manual

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

7 - 23
TUNSETTING
EC72N000Drive and rear wheel sprockets
setting parts
* For AUS and NZ
Part name Size Part number
Drive sprocket
1 (STD) 13T
* 14T9383B-13218
9383B-14222
Rear wheel
sprocket
2
(STD)
* (STD)48T
* 48T
* 49T
50T
* 50T
* 51T
52T
* 52T
54T5GS-25448-50
1C3-25448-00
1C3-25449-00
5TJ-25450-80
1C3-25450-00
1C3-25451-00
5TJ-25452-80
1C3-25452-00
5PH-25454-50
EC721002Tire pressure
Tire pressure should be adjust to suit
the road surface condition of the cir-
cuit.
•Under a rainy, muddy, sandy, or
slippery condition, the tire pressure
should be lower for a larger area of
contact with the road surface.
•Under a stony or hard road condi-
tion, the tire pressure should be
higher to prevent a flat tire.
Standard tire pressure:
100 kPa
(1.0 kgf/cm
2, 15 psi)
Extent of adjustment:
60 ~ 80 kPa
(0.6 ~ 0.8 kgf/cm
2,
9.0 ~ 12 psi)
Extent of adjustment:
100 ~ 120 kPa
(1.0 ~ 1.2 kgf /cm
2,
15 ~ 18 psi)
Pièces de réglage du pignon
d’entraînement et de la couronne
arrière
* AUS et NZ
Nom de la pièce Taille Numéro de pièce
Pignon
d’entraînement 1 (STD) 13T
* 14T9383B-13218
9383B-14222
Couronne arrière
2

(STD)
*(STD)48T
* 48T
* 49T
50T
* 50T
* 51T
52T
* 52T
54T5GS-25448-50
1C3-25448-00
1C3-25449-00
5TJ-25450-80
1C3-25450-00
1C3-25451-00
5TJ-25452-80
1C3-25452-00
5PH-25454-50
Pression des pneus
Régler la pression des pneus en fonction
des conditions du terrain.
En cas de conduite sous la pluie, sur
terrain boueux, sablonneux ou glis-
sant, réduire la pression des pneus
pour une meilleure adhérence.
Sur route pavée ou sur surface dure,
augmenter la pression des pneus afin
d’éviter les crevaisons.
Pression des pneus
standard:
100 kPa
(1,0 kgf/cm
2, 15 psi)
Plage de réglage:
60 à 80 kPa
(0,6 à 0,8 kgf/cm
2,
9,0 à 12 psi)
Plage de réglage:
100 à 120 kPa
(1,0 à 1,2 kgf/cm
2,
15 à 18 psi)
REGLAGE