D4 with a seat fuel tank. How do I install/attach the backrest of the new seat?

Believe there should be two metal brackets with key hole slots to mesh with the buttons welded to the tank, they slide down to lock to position. If someone has a sketch with dimensions I would be interested in a copy.

I believe John Hahn has the metal straps in stock for the seat back that your tractor requires. (20😎-553-3787. [email protected]

Thank you, yes there are some welded up towards the top makes since to have a strap/bracket that locks on! I'll reach out to John Hahn.

There should also be two threaded blocks on the tank below the cushion where the straps bolt to.

I slide mine on but don't bolt them on, so that I can take the cushions home at the end of the day.

To attach the metal strips to the plywood backing, you can buy threaded washers with dogs that hammer into the wood to keep them from turning. Mock up where you want the strips and drill your holes. Put the threaded washer on the foam side of the wood over the predrilled holes. Bolt the strips to the seat and they will slide over the buttons welded to your tank. That way you can slide your seat up to remove it when necessary. I use 3/8 bolts and paint the wood with a good primer at least two times. It will last for years.

Hi Team,
T nuts are what were used in the plywood seat backs to attach the mounting strips with.

https://www.youtube.com/watch?v=HVfkxJiqLkA

Hope this helps.
Cheers,
Eddie B.

[quote="edb"]Hi Team,
T nuts are what were used in the plywood seat backs to attach the mounting strips with.

https://www.youtube.com/watch?v=HVfkxJiqLkA

Hope this helps.
Cheers,
Eddie B.[/quote]

You can get them from McMaster Carr in stainless steel

That is exactly what I use but didn't know the name...