You don't really need to drain it but you want to release the pressure. Makes it easier to coil. If you're worried about freezing, blow it out with an air compressor.Just put a butterfly valve on a qc and plug it in. But I don’t see why you need to drain the water hose.
Or as Lee said put an open QC on each end and suck it out with the machine.If you're worried about freezing, blow it out with an air compressor.
I just push the male pin down on a flat surface and the water will release
Yes on tools. Hold tool so that when you squeeze trigger water drains.I just push the male pin down on a flat surface and the water will release