The BE PE-4013HWPSCOMZ is a great gas power washer for the serious do-it-yourselfer or contractor. This PowerEase washer is powered by a rugged 13 horse power Honda GX engine, so you are guaranteed to have the reliability when you need it. Included is a contractor grade triplex pump with oil sight glass and oil drain plug, this means easy maintenance and clear visibility when more oil is needed. A low pressure chemical injector is also included, so you are able to use chemicals to help lift any stubborn stains. The PE-4013HWPSCOMZ will spray at 4000 PSI and 4 gallons per minute, so there is plenty of power to operate a large Whirl-A-Way floor scrubber, water broom, or virtually any other pressure washer accessory.