7394
Lawn Addict
- Joined
- Sep 5, 2014
- Threads
- 84
- Messages
- 4,721
There should is a pressure relief valve, dumps the head pressure, so the motor can start when the tank gets low. It is part of the pressure switch that cuts the motor off when full pressure is reached.
They are cheap 30 bucks or so. If you can take a picture of the area behind
X 2.....