Hi have put a Millers Falls 13hp engine onto a spare ride-on i am doing up. Was given thge motor, never even heard of them before. Problem, engine will idle and rev out to full throttle without air filter attached, as soon as i attach airfilter the governor will go off, as in rev out fully back to idle back to rev out fully. Have had to reset valves, which i have checked a couple of times still all good, carby/ fuel tank/ hoses are clean and free of dirt and a new spark plug and new airfilter.
First photo is engine before fitment. Photo 2 is how the engine wants to run , nice and smooth. Photo 3 & 4 is when engine will start to play up quiet hard. [Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]
Wondering if anyone can answer why or has had this problem before. Any help or advice appriciated.
Thanks Paul.