To pressure regulator when the screw into the lock nut loose, turbocharged clockwise direction, buck-clockwise, slowly turn the handle. Voltage regulator, you must screw locking nut tight. If the remote control of piping internal volume is too large, you may experience vibration, please use the 4mm diameter tube for piping piping inside the fuel tank back to not do research with the oil valve blocks - the other valve return pipe connections, but should be made directly back to tank. For the main valve of the process control, remote control valves all closed, the main system pressure valve set pressure.