Reply To: Petrol pump on 1978 Wheelhorse tractor Model C 121 8 speed

[urbanalfa]

This looks like one of the plastic Chinese fuel pumps available on a well known auction site. I can’t advise which fuel pump is correct for your engine, but it should be possible to test if the pump is working by manually using the lever while it’s not fitted to your machine.

If possible, I’d recommend getting the original fuel pump back from the mechanic and taking it apart swapping the new diaphragm into the old fuel pump body. It’s usually the diaphragm that fails and the diaphragm in the new pump should fit into the old pump.