rwork
Platinum Member
Without the risk of sounding stupid, I assume you turn it clockwise ?
That is correct. Clockwise to increase pressure, counter clockwise to decrease pressure.
Have you checked to see if it needs adjusting??
I plugged my test gauge into my rear remote, ran the engine up to pto speed, and checked gauge. IIRC the factory spec on the R3039H is 2422 psi. Mine was a bit low at 2250.