RE: Stihl 65cc 4-mix on 30% Edge
there used to be a place on stihL's site where you could view an animation of the innerworkings of this engine while running. I got a good look at it about a week ago while at a friends' house. I was WRONG about the hose. it only operates the pump, just as tripp3d says. however, in the diagram, it shows the crankcase pressure being 'pumped' past the valve train, building pressure, then releasing into the intake valve. has anyone else seen this animation? past a link on here perhaps?