Yamaha YZ250R Service Manual

Contents

2-8MAINTENANCE SPECIFICATIONS SPECItem Standard LimitWheel:Front wheel type Spoke wheel …Rear wheel type Spoke wheel …Front rim size/Material 21 × 1.60/Aluminum …Rear rim size/Material 19 × 2.15/Aluminum …Rim runout limit:Radial … 2.0 mm (0.08 in)Lateral … 2.0 mm (0.08 in)Drive chainType/Manufacturer DID520DMA2 SDH/DAIDO …Number of links 113 links + joint …Chain slack 40~50 mm (1.6~2.0 in) …Chain length (10 links) … 152.5 mm (6.004 in)Front disc brake:Disc outside dia. × Thickness 250 × 3.0 mm 250 × 2.5 mm(9.84 × 0.12 in) (9.84 × 0.10 in)Pad thickness 4.4 mm (0.17 in) 1.0 mm (0.04 in)Master cylinder inside dia. 11.0 mm (0.433 in) …Caliper cylinder inside dia. 27.0 mm (1.063 in) × 2 …Brake fluid type DOT #4 …Rear disc brake:Disc outside dia. × Thickness 245 × 4.0 mm 245 × 3.5 mm(9.65 × 0.16 in) (9.65 × 0.14 in)Deflection limit … 0.15 mm (0.006 in)Pad thickness 6.4 mm (0.25 in) 1.0 mm (0.04 in)Master cylinder inside dia. 11.0 mm (0.433 in) …Caliper cylinder insdie dia. 25.4 mm (1.000 in) …Brake fluid type DOT #4 …Brake lever & brake pedal:Brake lever position 95 mm (3.74 in) …Brake pedal height Zero mm (Zero in) …(vertical height above footrest top)Clutch lever free play (lever end) 8~13 mm (0.31~0.51 in) …Throttle grip free play 3~5 mm (0.12~0.20 in) …