Yamaha Motor Co., Ltd. YFM7FGPW — ENGINE SPECIFICATIONS

EBS01002 ENGINE SPECIFICATIONS 2 - 5 ENGINE SPECIFICATIONS SPEC Item Standard Limit Cylinder head Maximum warpage ---- 0.03 mm (0.0012 in) Cylinder Bore Measuring point Maximum taper Out of round 102.000 ~ 102.010 mm (4.0157 ~ 4.0161 in) 50.0 mm (1.97 in) 102.080 mm (4.0189 in) ---- 0.05 mm (0.002 in) 0.05 mm (0.002 in) Camshaft Drive system Camshaft lobe dimensions A B Intake measurement “A” “B” Exhaust measurement “A” “B” Maximum camshaft runout Chain drive (left) 43.488 ~ 43.588 mm (1.7121 ~ 1.7161 in) 36.959 ~ 37.059 mm (1.4551 ~ 1.4590 in) 43.129 ~ 43.229 mm (1.6980 ~ 1.7019 in) 37.007 ~ 37.107 mm (1.4570 ~ 1.4609 in) ---- ---- 43.388 mm (1.7082 in) 36.859 mm (1.4511 in) 43.029 mm (1.6941 in) 36.907 mm (1.4530 in) 0.015 mm (0.0006 in)