I have a rap 350 and i have had it serviced and adjusted the valves,but there is a rattling noise on the left side of it, is this normal or could be the chain being that loud,or is it just the engine running and being that loud,its about as loud as my exhaust,which is stock.

 

Check any heat shields you might have, or loose body work, just go over and make sure everything is nice and tight.

 

yeah i checked everything and it seemed everything is tight.

 

does it only do it when your moving or stopped... or both?

 

it only does it when i'm moving,maybe its just how loud the engine sounds and i just noticed it.Does anyone elses chain make that much racket, that could be it.i don't know.

 

anyone else have a clue what this is,if any.

 

 

my 350 doesnt do it but i have noticed that my chain has been coming looser and if it is to loose it will rattle around like that and if it is hitting something when it bounces around it will make it that much louder

 

It could be the slack in the chain dragging on the skid plate or the rollers.

 

i think that was it,also i didn't lube for a about a week and my chain was real dry.