18V ONE+ 3.8L Air Compressor - Tool Only (R18AC-0)

All RYOBI Air Compressors come fitted with Nitto-compatible quick release couplers. To ensure they provide and maintain a high-strength air seal, these are bonded into place and are not designed to be removed - never attempt to remove a couple, as…

Check that the couplings on the compressor hose and the tool are matching. If your compressor has a regulator for outlet pressure, you can reduce the pressure to the fitting to make it easier to attach.

Learn the easy process of connecting and disconnecting a hose or tool to your RYOBI Air Compressor.

The Drain Valve is used to drain the stored compressed air moisture inside the tank, which is built up over the time. The more frequently you use your Air Compressor, the more moisture builds up, and failure to drain can lead to corrosion inside the…

Over time, moisture builds up inside the tank from the stored compressed air, which needs to be drained. The more frequently you use your compressor, the more moisture builds up, which can lead to corrosion inside the tank. See: How to drain…

RYOBI Compressors require a synthetic oil SAE-30, commonly found in small petrol engines such as lawn mowers. You require less than 1 litre for topping up. Ensure your unit is secure, sitting on a level surface. The Oil Fill Hole Cap can be found at…

Refer to the reset label to find the button to reset your RYOBI Air Compressor.

Compressors should only be turned on and off from their power button. Switching an Air Compressor off from the power outlet won’t allow for unloading to occur, which will then lead to stalling the Compressor’s electric motor the next time you try to…

The ‘Reset Button’ resets the motor after the circuit breaker has ‘tripped it’, which protects the electric motor from burn out or any time it’s under extreme load. Once tripped, the motor will not run.

That noise is normal and occurs each time the pump automatically turns off once the tank is full or is switched off via the compressor’s on/off switch. The release of air is the pump unloading the built-up air in the system ready for the next time…

This may be because the Air Compressor’s circuit breaker has tripped due to the unit being turned on from the power/wall outlet rather than the On/Off Power Button on the Compressor. The circuit breaker protects the Compressor’s electric motor from…