Farmall H hood

This probably applies to any letter series and maybe later. The H I have has a hole in the hood where I would expect the starter tank on a dual fuel.

Did every hood get this punch out? Or was this just a hood swap someone did before I got it?

I still want to pop the hood to look closer but I'm pretty sure it's not a dual fuel tractor. I haven't had much time to work on it since I got it but I was thinking I could weld the hood up and close that hole. But if every hood was cut that way maybe it's a leaver.

One of my H's has that hole in the hood, but no longer has the starter tank. I always figured if I got serious about restoring the tractor I'd just fill in the hole.

I'm not sure they're a knockout by looking at the hood on my other H. More likely two different versions of the hood.

Thanks and I think I used the wrong word when I said knockout. Sounds like there is two versions.

The hood(s) on my H(s) have smooth hoods with no hole.One is a 53 SuperH,the other,a 52 H.they are both gas only tractors.

There is a small round, brass tag on the
left top of the carburetor. 50981 is for gas
only, 45108 is for dual fuel. Both will run
gas.
These tractors are so old many parts have
been swapped. Many people removed the small
tank and valve for the dual fuel models and
just used gas.

I think all of the hoods were stamped on the underneath side, but obviously not all of them were actually knocked out. My '50 H does not have the hole, but I can see where it is stamped when the hood is removed.

Gas burners didn't have the hole in the hood for starter tank. I can't answere as to whether there was marks on
the underneath side for knocking it out at factory for a dual burner. Both of my H's are dual, so I don't have a
gas hood to look at for details. I know my M is a gas, and does not have the hole.

Thanks guys you gave me some things to look at.

I didn't know about the marks on the carb to look at.

Was there also something to look at on the manifold?

I know it has the shutter control for the radiator but I don't think it was connected. As I understood it, I thought the shutters got onto a lot of straight gas tractors too.

Might just be missing the starter tank but could be that the hood was swapped too.

Sounds to me like you are unsure that it is indeed a gas burner, just with wrong hood. The letters at end of
serial number would indicate what it was from factory. Dont quote me, but I thank X1 indicates a gas burner.
That's the way my M is, and I am just assuming the lettering was the same for an H, but I don't know that for
sure.
All dual burners were equipped with shutters, auxiliary tank, and a dual fuel burning manifold. Basicly those
manifolds just preheated the intake air when the air traveled through the manifold. It done this by using the heat
from the exhaust. The exhaust was channeled around the outside of the intake portion of manifold. These manifolds
had a lever to change this for when just burning gas. In the gas burning position the exhaust would just exit
directly out of the manifold. The gas burning manifolds had exhaust ports that didn't have any contact with the
intake.
Shutters were mandatory for dual burners. Otherwise they were an option on the gas burners. A gas burner may or
not have have shutters depending on how it was ordered from factory. Probly likely in northern US, but probly
unlikely in southern US. They were only needed on gas burners for winter time use.

redforlife,

When I started asking the question I was sure it was just the wrong hood. The comments got me thinking more and now I need to check some things just to be sure. Wish I lived where I store my tractors.

I am in Wisconsin so the shutters could just have been an option. Would be handy on a cold day.