2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 96Get this manual
ENGINE DISASSEMBLYASSEMBLY Engine Inspection Procedures Chain Tensioner
Verify chain tensioner function1Push tensioner into housing until flush with threaded housingTensioner should lock into place(6 audible clicks should be heard when tensioner is pushed in from fully extended position 2Once locked, push tensioner inwardTensioner should activate and spring outwardsFULLY EXTENDED
Replace tensioner assembly if tensioner will not lock, then engage when pushed inward from locked positionPUSH FLUSH TO LOCK PUSH PAST FLUSH TO ENGAGE