Shortly after completing the rebuild of the carb for the pressure washer it became apparent that having left the hose connect to the pump for the last year, with no possible way for water to drain or dry out, a resulting negative outcome occurred. I already had my time invested in the engine, and didn't feel like quitting now, so since it was 10 years old, I figured it was time for a pump rebuild.

Given the water mineral content in Florida, the main issue expected was that of hard mineral deposits on diaphragms and moving parts within the unit; i was not disappointed.

After loosening components while still mounted to the engine, I then remove the pump from the pressure washer, and make this a pump only affair until the end of the project. This in turn splits into two halves, having no issue with the piston side, its cleaned up and put off to the side until the end.

The valves can not be conventionally removed, I use a special procedure to do so as described in the video. Check valves needed much work as they were completely frozen shut. All components are cleaned and inspected, the bore of the unit is cleaned with a drill and a .50 cal brass brush.

With Remoil and 327, the chick valves are reinstalled into the unit. All other pieces are then assembled by hand. 327 is used on all rubber parts.

The two halves are then brought together and retightened. I take this opportunity to do an oil change on the pump. The pimp is then reconnected to the pressure washer motor.

With that, a test run is conducted on a section of the sidewalk showing restored optimum performance.