2007 Arctic Cat ATVs factory service and repair manual, Page 247Get this manual

2007 Arctic Cat ATVs factory service and repair manual, Page 247

1NOTE: If the existing rings will not be replaced with new ones, note the location of each ring for proper installationWhen
in the cylinder 2Using feeler gauge, measure each piston-ring end gapAcceptable ring end gap must be within specificationsMeasuring
Piston Skirt1 Cylinder Clearance 1Measure the cylinder front to back in six places 2Measure the corresponding piston diameter
at point 15 mm (0.6 in 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 Measuring Piston Pin (Outside Diameter)
and Piston-Pin Bore 1Measure the piston pin outside diameter at each end and in the centerIf measurement is not within specifications,
the piston pin must be replaced 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