It sounds to me like your "lift" circuit is not working, and you are lifting the head with the "float" circuit. To float the head on the ground, you set the float pressure to just less than the weight of the head, allowing the head to go down and lightly sit on the ground. To raise the head, a separate valve (or cylinder) supplies full pressure to the lift cylinders. Some swathers have 2 sets of cylinders, one set is the "lift" and one set is the "float". Even if you only have one set, many swathers have a separate "Raise/Lower" valve and a "float pressure circuit". I think you have an electrical or valve problem preventing the raise valve from activating. You are raising the head by raising the float pressure above the carrying weight of the head, but that is not the actual "raise" valve or function.
Last edited by Jeff-C-IL; 07-16-2018 at 10:47 AM.