Farmall H sputters and loses power when worked ho

6V. Magneto. Clean fuel filters.

When mowing the field and working it till hot, the ol' girl sputters and loses power. After it cools down she will run fine until working hard in the pasture.

I'm asking this for my 80 year neighbor who still mows the pasture but he's getting tired too.

I'm thinking it's one of these things:

Vacuum leak or crack in manifold?

Tank not venting when hot?

Magneto getting tired.

Any ideas that will help my tired old neighbor down the road.

I suspect that when he gets too tired I'll be running his H and mowing the field so it will be good for me to get to know this old girl before that happens. Tom

He said that it is not red-lining, but just doing the usual working and hogging a field.

What did you use to insulate the fuel line?

I'll ask him to vent the cap, and I will install the insulation on the line.

To me, it sounds more like a coil issue, but will try the other easy fixes first...

Tom

• Hobby farm

If it gets to the boiling point it needs service to the cooling sys befor it gets dammaged.
JimN