Combines ladder actuator

Surplus Center has linear actuators that may work. Don't know the length that you need. Maybe someone with a service manual might know.

If you happen to have a powered for_aft adjustment for your reel on you head, measure it. I believe they may be the same as the one for the ladder. I cant imagine carrying two different ones in stock for the dealers. The ones in Surplus Center look the same as on the machine. I saw them in person.