Yamaha RAPTOR YFM125RA, Service Manual, Page: 30 / 300

ENGINE SPECIFICATIONS
2-7
2nd ring
Ring type Taper
Dimensions (B
×
T) 1.00
×
2.10 mm (0.04
×
0.08 in)
End gap (installed) 0.30–0.45 mm (0.012–0.018 in)
Limit 0.55 mm (0.0217 in)
Ring side clearance 0.020–0.060 mm (0.0008–0.0024 in)
Limit 0.120 mm (0.0047 in)
Oil ring
Dimensions (B
×
T) 2.00
×
2.25 mm (0.08
×
0.09 in)
End gap (installed) 0.20–0.70 mm (0.008–0.028 in)
Crankshaft
Width A 46.95–47.00 mm (1.848–1.850 in)
Runout limit C 0.030 mm (0.0012 in)
Big end side clearance D 0.15–0.45 mm (0.0059–0.0177 in)
Limit 0.50 mm (0.0197 in)
Big end radial clearance E 0.010–0.021 mm (0.0004–0.0008 in)
Balancer
Balancer drive method Gear
Clutch
Friction plate thickness 3.00 mm (0.12 in)
Wear limit 2.80 mm (0.11 in)
Plate quantity 4 pcs
Clutch plate thickness 1.60 mm (0.06 in)
Plate quantity 3 pcs
Clutch plate warpage limit 0.05 mm (0.0020 in)
Clutch spring free length 31.7 mm (1.25 in)
Limit 30.1 mm (1.19 in)
Spring quantity 4 pcs
Clutch release method Inner push, cam push
Push rod bending limit 0.5 mm (0.02 in)
Transmission
Main axle runout limit 0.03 mm (0.0012 in)
Drive axle runout limit 0.03 mm (0.0012 in)
Main axle assembly width 83.25–83.45 mm (3.278–3.285 in)