Hi, I bought a used EXU 20 with 148hrs on it. The batteries are not great but before replacing I wanted to make sure all is working OK.

At the minute, the up and down work fine but when I try moving I can hear a noise but no movement. I have looked at the controller and the status LED is flashing - 4 quick flashes followed by a single flash. The flashing is happening with the machine key in the on position. (orange LED)

Can anyone point me in the right direction to get it moving? or know what the error is? IS there a workshop manual online?

Thanks for any help.