Adjust Ninja PCP Regulator

If you are mechanically inclined you should be able to do it without issue as long as you have a pressure tester and there are both bellevilles and a couple of shims in it.

1) Degas bottle

2) Remove bonnet set screws and then remove bonnet.

3) Remove piston and remove one of the shims. If different thickness start with thinnest one

4)Reassemble - pressurize and check pressure

5)If pressure is still too high repeat process

You may have to purchase some really thin shims for fine adjustment