2011 Arctic Cat 350/425 ATV Service Manual, Page 81Get this manual
Honing Cylinder 1Using slide gauge and dial indicator or snap gauge, measure the cylinder bore diameter in three locations from top to bottom and again from top to bottom at 90 from the first measurements for total of six measurementsThe trueness (out-of-roundness) is the difference between the highest and lowest readingMaximum trueness (out-of-roundness) must not exceed specifications CC283D
2Rotate the camshaft and note runout; maximum tolerance must not exceed specificationsMeasuring Camshaft Lobe Height 1Using calipers, measure each cam lobe height
2Wash the cylinder in parts-cleaning solvent3Inspect the cylinder for pitting, scoring, scuffing, and corrosionIf marks are found, repair the surface using #320 grit ball honeNOTE: To produce the proper 60 cross-hatch pattern, use low RPM drill (600 RPM) at the rate of 30 strokes per minuteIf honing oil is not available, use lightweight petroleum-based oilThoroughly clean cylinder after honing using soap and hot waterDry with compressed air; then immediately apply oil to the cylinder boreIf the bore is severely damaged or gouged, replace the cylinder