Mountfield RV150 problem

elliesgramps

Hi all. Got a bit of a dilemma. Have an RV150 Lawnmower engine which is hunting. I've ultra sonic cleaned carb  replaced gasket and O ring.  Checked inlet manifold for leaks. Tested coil. And put new plug in. But still hunting. Any ideas or advice please. Am I missing something.

BobTheGardener

Have you checked the fuel and air filters?

elliesgramps

Yes I've put a new air filter and drained and put new fuel in

steephill

https://repairlawnmowersforprofit.com/how-to-service-a-mountfield-petrol-lawnmower/ may be useful if you haven't seen it before. Main advice is only use genuine gaskets not third party versions.

ColinA

It may be useful to contact the manufactures technical dept for informationalso

elliesgramps

Thanks I will give it a view. And I've emailed manufacturers twice with no reply.