Yamaha YFM660RN Service Manual

Contents

2 - 8SPECCrankshaft:Crank width “A” 74.95 ~ 75.00 mm(2.9508 ~ 2.9528 in)----Runout limit C1 ---- 0.03 mm(0.0012 in)C2 ---- 0.03 mm(0.0012 in)Big end side clearance “D” 0.32 ~ 0.64 mm(0.0126 ~ 0.0252 in)1.0 mm(0.0394 in)Big end radial clearance “E” 0.010 ~ 0.025 mm(0.0004 ~ 0.0010 in)----Small end free play “F” 0.8 mm (0.0315 in) ----Balancer:Balancer drive method Gear ----Clutch:Friction plate 1Thickness 2.74 ~ 2.86 mm(0.108 ~ 0.113 in)2.6 mm(0.102 in)Quantity 6 ----Friction plate 2Thickness 2.94 ~ 3.06 mm(0.116 ~ 0.120 in)2.8 mm(0.110 in)Quantity 2 ----Clutch plateThickness 1.1 ~ 1.3 mm(0.043 ~ 0.051 in)----Quantity 7 ----Max. warpage ---- 0.2 mm(0.008 in)Clutch springFree length 42.8 mm (1.69 in) 40.7 mm(1.60 in)Quantity 5 ----Min. length ---- 40.8 mm(1.61 in)Clutch release method Outer pull, rack and pinion pull ----Item Standard LimitMAINTENANCE SPECIFICATIONS