2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 160Get this manual
FSFST Engine Cylinder HeadValve Train
12Remove the engine from the engine compartmentRemove the valve cover7Push the rocker arm pins out and remove the MAG rocker arms
834Remove the exhaust manifoldturbocharger assemblyRotate the engine so the engine bedplate is upRemove the bedplate from the crankcase
Rotate the engine in the direction of forward engine rotation until the PTO cylinder is at TDC-compression stroke9Push the rocker arm pins out and remove the PTO rocker arms10Remove the valve shims from each valve assemblyCollect each rocker arm, pin and valve shims as they were removed from the enginePlace each set in container or bag with accurate labeling noting where each component is used during assembly11Remove the chain tensioner plug using large pipe wrenchInstall the crankshaft arrestor tool, PN: PS-48039, on to the PTO shaftTurn the engine so the cylinder head is up