2001 Polaris SLX, PRO 1200, Virage TX, Genesis, Virage TXi, Genesis i Personal Watercraft Service Manual, Page 120Get this manual
EngineCooling Engine AssemblyAll 1200 ModelsContinued
14Install each piston with arrow facing exhaust sideRing locating pins should be facing intake side15Install remaining circlips into pistons using circlip installation toolAgain verify that gap is either upward or downward and clip is fully seated