Hey Burrhead my tractor is running away, to many rpm's

One thing besides the diaphram and tube leaking I have seen is they build up gunk in the diaphram breather and the fuel control rod that goes from the diaphram into the injector pump will stick wide open.

When you have the diaphram out the fuel rod should slide in and outwards of the injector pump easily with just a screwdriver and no prying, just using hand force.

If it's binding a little just slide it in and out a few times to knock the rust or crud off it..

The diaphram is just a flat rubber disc with a spring attached to one side and a stroke rod attached to the other. To get the diaphram out you need to take it off the stroke rod by taking out the cotter key in the rod.

The diaphram looks almost identical to a gasoline fuel pump diaphram. If it has rotted the holes may be too small to see.

Before I took the thing apart I would check the throttle plate inside the manifold again to be sure it's not binding or dirty, check the air cleaner in the diaphram housing bottom, and pull vacuum on the line to the manifold to see if the diaphram is leaking.

I use a hand operated vacuum pump like you use to do a one man brake bleeding job to check fuel and vacuum lines for leaks.

When I went back through what we had said I noticed I had made a mistake on the discription.

If the old diaphram is the original or a Ford replacement diaphram in it, the diaphram should be leather- it's not rubber unless somebody has replaced it before with and after market rubber diaphram.

You are right it fits into a groove in the housing like a seal. I use Vaseline on the diaphram to preserve and slick it a little bit, and a plastic tooth brush handle to seat it.

The only things I can think of to do when reinstalling is to rub the new diaphram down good with Vaseline Petro Salve, and you might take some super fine emery cloth and shine up the housing a little where the diaphram goes in it.

Sometimes the slot can be aggravating to hit, just be careful and make sure the new diaphram is seated good in the groove.

If you need a pic of any part of the tractor just holler and I'll either figger out how to use my new scanner, or I can fax a copy to you.

Wowee $140 for 1/2 a shoe tongue is 4 times too high. The $100 is still too high too but a little better.

The one we use does'nt have to have the reflector tape you just make a mark with chalk on the pully.

• Tach