1. GENERAL INFORMATION SUPER 9 50 SERVICE INFORMATION ENGINE Standard (mm) Service Limit (mm) Item SF10DA SH10DA SF10DA SH10DA Cylinder head warpage 0.10 0.10 Piston O.D.(5mm from bottom of piston skirt) 38.95538.970 38.95538.970 38.90 38.90 Cylinder-to- piston clearance 0.030.07 0.10 0.10 Piston pin hole I.D. 12.00212.008 12.00212.008 12.03 12.03 Piston pin O.D. 11.99412.0 11.99412.0 11.98 11.98 Piston-to-piston pin clearance 0.0020.014 0.03 Piston ring end gap (top/second) 0.100.25 0.100.25 0.40 0.40 Connecting rod small end I.D. 17.00517.017 17.00517.017 17.03 17.03 Cylinder bore 39.039.025 39.039.025 39.05 39.05 Drive belt width 18 18 17 17 Drive pulley collar O.D. 20.0120.025 20.0120.025 19.97 19.97 Movable drive face ID. 20.03520.085 20.03520.085 20.21 20.21 Weight roller O.D. 13.0 13.0 12.4 12.4 Clutch outer I.D. 107107.2 107107.2 107.5 107.5 Driven face spring free length 87.9 87.9 82.6 82.6 Driven face O.D. 33.96533.985 33.94 Movable driven face I.D. 34.034.025 34.06 Connecting rod big end side clearance 0.60 Connecting rod big end radial clearance 0.04 Crankshaft runout A/B L:0.15 R:0.10 CARBURETOR SF10DA SH10DA Venturi dia. 14mm 14mm Identification number PB058 C PB093 C Float level 8.6mm 8.6mm Main jet(Unlimited/limited speed) #92/#78 #92/#78 Slow jet #35 #35 Air screw opening 1 1 Idle speed 1900100rpm 2000100rpm Throttle grip free play 26mm 26mm Jet needle clip notch 1st notch 1st notch 1-12