Briggs and Stratton 675 (190cc) engine. The motor stopped working due to a hung up intake valve.
Breakdown revealed a piece of plastic was stuck inside.
Removed plastic and bolted engine back together. Started on first pull and left to run for 15 minutes. All is well on the engine rebuild!!!
I assume the plastic was supposed to be fixed somewhere just under the intake manifold to deflect fuel.
Local small engine mechanics didn’t recognize the “mystery plastic part”….
Thoughts and comments welcome.