2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 219Get this manual

2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 219

Measuring Piston Pin (Outside Diameter) and Piston-Pin Bore 1Measure the piston pin outside diameter at each end and in the
cleaner will result in severe damage to the piston Measuring Piston-Ring End Gap (Installed) 1Place each piston ring in the
wear portion of the cylinderUse the piston to position each ring squarely in the cylinder2Using feeler gauge, measure each
piston-ring end gapAcceptable ring end gap must be within specifications ATV-1069 Measuring Piston Skirt Cylinder Clearance
1Measure the cylinder front to back in six places2Measure the corresponding piston diameter at point 15 mm above the piston
skirt at right angle to the piston-pin boreSubtract this measurement from the measurement in step 1The difference (clearance)
must be within specificationsInstalling Piston Rings 1Install ring expander (4) in the bottom groove of the piston; then
install the thin oil rings (3) over the expander making sure the expander ends do not overlapStagger the end gaps of the
upper and lower thin oil rings according to the illustrationNOTE: Note the direction of the exhaust side of the piston (5)