a904 and carb help!

Do some diagnostics on the transmission first. I’m guessing it “worked when parked” so let’s start with a fluid and filter change. Some material in the pan is normal over the life of the transmission.

Get a service manual and a pressure gauge kit, you can do everything you need just like a shop can and you learn while you go.

So, fluid and filter change, adjust the bands, filled and checked warm in neutral and make sure the throttle linkage is adjusted correctly and then see what get.

Cliff Ramsdell