2007 Arctic Cat DVX/Utility 250 ATV Service Manual, Page 31Get this manual
CYLINDER, PISTON, AND RINGS Piston SkirtCylinder Clearance Cylinder Bore Piston Diameter 18 mm (0.71 in from Skirt End Piston Ring Free End Gap (min) Bore Stroke Cylinder Trueness Piston Ring End GapInstalled Piston Ring to Groove Clearance (max) (max) 0.12 mm (0.0047 in (max) 66.09 mm (2.602 in 65.880 mm (2.5936 in (1st) 6.0 mm (0.24 in (2nd) 7.2 mm (0.28 in 66 72 mm (2.60 2.84 in (max) 0.05 mm (0.002 in 0.25-0.50 mm (0.010-0.020 in (1st) 0.180 mm (0.0071 in (2nd) 0.150 mm (0.0059 in (1st) 1.01-1.04 mm (0.040-0.041 in (2nd) 1.22-1.24 mm (0.048-0.049 in (oil) 2.01-2.03 mm (0.079-0.080 in (1st) 0.97-0.99 mm (0.038-0.039 in (2nd) 1.17-1.19 mm (0.046-0.047 in (max) 16.05 mm (0.6318 in (min) 15.98 mm (0.6291 in Clutch Release Screw Drive Plate (fiber) Thickness Drive Plate (fiber) Tab Driven Plate (warpage) Clutch Spring Length Clutch Wheel Inside Diameter Starter Clutch Shoe Clutch Engagement Clutch Lock-Up Primary Reduction Ratio
18 turn back (min) 2.4 mm (0.094 in (min) 11 mm (0.43 in (max) 0.1 mm (0.004 in (min) 27.5 mm (1.08 in (max) Scuffing of contact surface No groove at any part RPM 2000 200 RPM 3400 300 3.250 (6520) 1.125 (1816) (front) 3.090 (3411) (rear) 3.647 (6217) (super low) 3.176 (1718 2511 3725) (low) 1.480 (3725) (high) 1.112 (1125 1817 4318) (1st) (2nd) (3rd) (4th) (5th) (reverse) 3.083 (3712) 1.933 (2915) 1.388 (2518) 1.095 (2321) 0.913 (2123) 2.833 (2912 3429) 0.10-0.50 mm (0.004-0.020 in 0.05-0.50 mm (0.002-0.020 in 0.10-0.50 mm (0.004-0.020 in