Yamaha WR250F Owner's Service Manual page 64

Brake pad lining thickness (outer)
Limit
Master cylinder inside diameter
Caliper cylinder inside diameter
Recommended brake fluid
Rear brake
Type
Operation
Rear disc brake
Disc outside diameter  thickness
Brake disc thickness limit
Brake disc runout limit (as measured on wheel) 0.15 mm (0.0059 in)
Brake pad lining thickness (inner)
Limit
Brake pad lining thickness (outer)
Limit
Master cylinder inside diameter
Caliper cylinder inside diameter
Recommended brake fluid
Steering
Steering bearing type
Center to lock angle (left)
Center to lock angle (right)
Front suspension
Type
Spring/shock absorber type
Front fork travel
Fork spring free length
Limit
Fork spring installed length
Spring rate K1
Spring stroke K1
Inner tube outer diameter
Inner tube bending limit
Optional spring available
Recommended oil
Quantity
Rebound damping adjusting positions
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum
Compression damping adjusting positions
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum (hard)
CHASSIS SPECIFICATIONS
4.4 mm (0.17 in)
1.0 mm (0.04 in)
9.52 mm (0.37 in)
22.65 mm  2 (0.89 in  2)
DOT 4
Single disc brake
Right foot operation
245  4.0 mm (9.6  0.16 in)
3.5 mm (0.14 in)
6.4 mm (0.25 in)
1.0 mm (0.04 in)
6.4 mm (0.25 in)
1.0 mm (0.04 in)
11.0 mm (0.43 in)
25.40 mm  1 (1.00 in  1)
DOT 4
Taper roller bearing
43.0 °
43.0 °
Telescopic fork
Coil spring/oil damper
310.0 mm (12.20 in)
470.0 mm (18.50 in)
465.0 mm (18.31 in)
470.0 mm (18.50 in)
4.40 N/mm (0.45 kgf/mm, 25.12 lbf/in)
0.0–310.0 mm (0.00–12.20 in)
48 mm (1.9 in)
0.2 mm (0.01 in)
Yes
Suspension oil S1
3
540.0 cm (18.26 US oz, 19.05 Imp.oz)
20 click (s) out*
10 click (s) out*
Fully turned in
20 click (s) out*
11 click (s) out*
Fully turned in
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