I recently acquired a stripped down transmission/differential/wheel hub/brake from an old BCS 735 mower. This is a similar device (no engine, no wheels, no rear implement in my case):
I have managed to get the gearbox and differential assembled again from being completely scattered around. However the reverse idler gear is completely worn down. It still kind of works, but it will fail soon enough. I do know the part number, but I cant find a single thing about it. I would like to machine a new gear, but I only have some guesses based on the worn down existing gear how it should look like. Preferrably I'd like to get the actual specs of it.
In the service manual I can find the required parts information and it can be seen here:
I was wondering if anyone recognizes this type of machine and happens to know more details about the reverse idler gear or at least a compatible alternative that can still be ordered, because with the part number in the manual I was not able to find anything.