Hey Guys I'm new here and could use some help.My 1995 175 Ocean runner[<500 hrs.]ALWAYS maintained to the Max.Decarbon evey 50 hrs.,Use Ring-Free every tank or so etc.I am an Auto Tech and am very familar with Engines,BUT not a lot of experience with 2-strokes.<br /><br />Now that I have laid a little background,Heres what I have.<br /> She has been running great,but at the end of last year I thought I heard a very small knocking noise,this year I took Her out in March,surely was a knocking in the Engine.Did not go out again until Memorial Day weekend and no dought seemed to be getting louder.<br /><br /> I Fished for 3 days,knocking away!WHEN you come off idle,maybe to about 1.5-2 K rpms you can hear it.Rev it up in neutral,you can hear it [knocking]when you go up in rpm and when it comes down also.<br /><br /> I pulled the Flywheel[bolts tight]Pulled the Throttle Plates and Reeds.From what I can see the Cylinders and Pistons look damn near new.Still have cross hatch pattern on the walls,Piston skirts have virtually no scuff marks,nothing dry.<br /><br /> What I DID find and I don't know if it should be this way or not.Is I grabbed the top of the Crankshaft and yanked it back and forth[now,now Guys]and can feel the Crank move a hair,BUT when I do this,I can ALSO hear a Knock!!I would not think it should move,but like I said I am not real familar with 2-strokes.I will be after this for sure.Any help would be appreciated!!!THANKS![Mike] 
