Hi, Maintenance Brian. We are glad to see you have been happy overall with the quality & performance of your new 4000 PSI pressure washer. If you would like to give our team a call directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com, we would be happy to do a little troubleshooting to see if we can resolve the throttle issue for an even better experience. We appreciate you sharing your feedback and hope you will be in touch!

It's great to hear your 4000 PSI pressure washer has proven enjoyable to operate, and it has performed for a five-star cleaning experience worthy of your recommendation. Show off your results any time by tagging #simpsonclean on social media and we'd love to see your before/after photos. Thanks for taking the time to review, Taylor M!