2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 74Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 74

ENGINE Tensioner Spring Free Length: 2.02" (5.13 cm) 4Measure free length of tensioner springReplace spring if excessively
assembly if any part is worn or damaged Rocker ArmShaft Inspection 5Measure I.Dof both rocker arm shaft supports and visually
inspect surfaceCompare to specifications 1Mark or tag rocker arms to keep them in order for assembly2Inspect each rocker
arm cam follower surfaceIf there is any damage or uneven wear, replace the rocker armNOTE: Always inspect camshaft lobe if