.....pull cable... The bucket itself does not have any hydraulics on it. To actually dump the bucket, you have to pull a cable that connects to a mechanical catch with a lever that opens the catch. If you are lucky you can pull on another cable that is attached to the bucket itself and snap it back into the catch while it swings/rocks back and forth empty....if not, you have to lower the bucket/loader to the ground to snap it back in place ...or get off the tractor and do it by hand... so, this is the primary incentive to get the darn thing to lower quicker than it does.... about as basic of a loader as you can get...absolutely no markings on it any were except for the controller being a Gresen 550 and possible made 8/12/68....do not think it is factory, but has lasted some 45 years and appears to have taken some serious abuse.