Yamaha 2009 Raptor 250, Service Manual

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ENGINE SPECIFICATIONS
2-8
Crankshaft
Width A 69.25–69.30 mm (2.726–2.728 in)
Runout limit C 0.03 mm (0.0012 in)
Big end side clearance D 0.350–0.650 mm (0.0138–0.0256 in)
Limit 0.50 mm (0.0197 in)
Big end radial clearance E 0.010–0.025 mm (0.0004–0.0010 in)
Balancer
Balancer drive method Gear
Clutch
Friction plate thickness 2.90–3.10 mm (0.114–0.122 in)
Limit 2.80 mm (0.110 in)
Plate quantity 6 pcs
Clutch plate thickness 1.50–1.70 mm (0.059–0.067 in)
Plate quantity 5 pcs
Clutch plate warpage limit 0.20 mm (0.0079 in)
Clutch spring free length 47.80 mm (1.88 in)
Limit 46.50 mm (1.83 in)
Spring quantity 5 pcs
Clutch release method Inner push, cam push
Push rod 2 bending limit 0.10 mm (0.004 in)
Transmission
Main axle runout limit 0.06 mm (0.0024 in)
Drive axle runout limit 0.06 mm (0.0024 in)
Main axle assembly width 102.2–102.4 mm (4.02–4.03 in)
Shifting mechanism
Shift mechanism type Shift drum and guide bar
Shift fork guide bar bending limit 0.05 mm (0.002 in)