2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 265Get this manual
1Wash the valve cover in parts-cleaning solvent2Place the valve cover on the Surface Plate (pin 0644-016) covered with #400 grit wet-or-dry sandpaperUsing light pressure, move the valve cover in figure eight motionInspect the sealing surface for any indication of high spotsA high spot can be noted by bright metallic finishCorrect any high spots before assembly by continuing to move the valve cover in figure eight motion until uniform bright metallic finish is attained
CAUTION
Table of Contents
(Servicing Components)
Do not remove an excessive amount of the sealing surface or damage to the camshaft will resultAlways check camshaft clearance when resurfacing the valve cover
Servicing Top-Side Components 3-221 Valve Assembly 3-221 Piston Assembly 3-225 CylinderCylinder Head Assembly 3-227 Servicing Left-Side Components 3-230 Recoil Starter 3-230 Servicing Right-Side Components 3-234 Inspecting Starter Clutch Shoe 3-234 Inspecting Starter Clutch Housing 3-234 Inspecting Primary One-Way Drive 3-234 Inspecting Oil Pump 3-234 Servicing Center Crankcase Components 3-234 Secondary Gears 3-234 Crankshaft Assembly 3-236 Countershaft 3-237