Yamaha YZ250F(D), Owner'S Service Manual

Page: 34 / 198

2-8
MAINTENANCE SPECIFICATIONS
CHASSIS
Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less (0.0047 in or less) 0.20 mm (0.008
in)
Side clearance 0.09–0.17 mm (0.0035–0.0067 in) 0.24 mm (0.009
in)
Housing and rotor clearance 0.03–0.10 mm (0.0012–0.0039 in) 0.17 mm
(0.0067 in)
Cooling:
Radiator core size
Width 121.4 mm (4.8 in) ----
Height 235 mm (9.3 in) ----
Thickness 28 mm (1.1 in) ----
Radiator cap opening pressure 110 kPa (1.1 kg/cm
2
, 15.6 psi) ----
Radiator capacity (total) 0.64 L (0.56 Imp qt, 0.68 US qt) ----
Water pump
Type Single-suction centrifugal pump ----
Item Standard Limit
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 454 mm (17.9 in) ← 449 mm (17.7
in)
Spring rate, STD K = 4.5 N/mm (0.459 kg/
mm, 25.7 lb/in)
←
----
Optional spring Yes ← ----
Oil capacity 543 cm
3
(19.1 lmp oz,
18.4 US oz)
←
----
Oil grade Suspension oil "S1"
←
----
Inner tube outer diameter 48 mm (1.89 in) ← ----
Front fork top end 5 mm (0.20 in)
←
----
Rear suspension: USA, CDN EUROPE, AUS, NZ, ZA
Shock absorber travel 132.0 mm (5.20 in)
←
----
Spring free length 260 mm (10.24 in) ← ----
Fitting length 250 mm (9.84 in)
←
Preload length
<Min.–Max.>
1.5–20 mm (0.06–0.79
in)
←
----
Spring rate, STD K = 52.0 N/mm (5.30 kg/
mm, 296.8 lb/in)
←
----
Optional spring Yes
←
----
Enclosed gas pressure 1,000 kPa (10 kg/cm
2
,
142 psi)
← ----