2011 Arctic Cat 450/550/650/700/1000 ATV Service Manual, Page 27Get this manual
Specifications (550650700) VALVES AND GUIDES (intake) 31.6 mm (exhaust) 27.9 mm ValveTappet Clearance (cold engine) (intake) 0.1016 mm (exhaust) 0.1524 mm Valve GuideStem Clearance (intakeexhaust) 0.013 mm Valve GuideValve Stem Deflection (max) 0.35 mm (wobble method) Valve Guide Inside Diameter 5.000-5.012 mm Valve Stem Outside Diameter (intakeexhaust) 4.972-4.987 mm Valve Stem Runout (max) 0.1 mm Valve Head Thickness (min) 2.3 mm Valve Stem End Length (min) 3.97 mm Valve FaceSeat Width (intake) 2.25 mm (exhaust) 2.60 mm Valve Seat Angle (intakeexhaust) 45 15'-45 30' Valve Face Radial Runout (max) 0.2 mm Valve Spring Free Length (min) 38.7 mm Valve Spring Tension 31.5 mm (outer) 19.0 kg (42 lb) CAMSHAFT AND CYLINDER HEAD Cam Lobe Height (min) (intakeexhaust) 33.53 mm Camshaft JournalCylinder (max) 0.04 mm Head Clearance Camshaft Journal Holder (rightcenter) 21.98-22.04 mm Inside Diameter (left) 17.48-17.53 mm Camshaft Journal Outside (rightcenter) 21.96-21.98 mm Diameter (left) 17.47-17.48 mm Camshaft Runout (max) 0.05 mm Rocker Arm Inside Diameter 12.000-12.018 mm Rocker Arm Shaft Outside Diameter 11.97-11.98 mm Cylinder HeadCover Distortion (max) 0.05 mm CYLINDER, PISTON, AND RINGS Piston SkirtCylinder Clearance 0.045 mm Piston Diameter 15 mm from Skirt End (550650) 97.948-97.962 mm Piston Diameter 12 mm from Skirt End (700) 101.930101.949 mm Piston Ring Free End Gap (1st2nd) 12.5 mm Bore Stroke 92 82 mm550 98 85 mm650 102 85 mm700 Cylinder Trueness (max) 0.01 mm Piston Ring End GapInstalled (min) 0.36 mm Piston Ring to Groove Clearance (max) (1st2nd) 0.03 mm Piston Ring Groove Width (1st2nd) 1.202-1.204 mm (oil) 2.01-2.03 mm Piston Ring Thickness (1st2nd) 1.970-1.990 mm Piston Pin Bore (max) 23.0 mm Piston Pin Outside Diameter (min) 22.99 mm CRANKSHAFT Connecting Rod (max) 23.021 mm (small end inside diameter) Connecting Rod (big end side-to-side) 0.6 mm Connecting Rod 150 mm (max) 0.3 mm (small end deflection) Crankshaft (web-to-web) 71 mm Crankshaft Runout (max) 0.03 mm