Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Any make and model? Need to see what it uses for the 2nd stage. Either a leaking cylinder, or a valve is leaking, not letting the pressure raise .Can even be the pump, not capable of making the required pressure Do you see an adjustable relief valve? Valve tension would need to be increased to raise pressure.
The relief valve assembly is going to be bad, or the pump is not capable of making the maximum pressure. Located either on the hydraulc pump or part of the control valve. Parts book I see does not show it. Looks to be part of the pump!
OK> Relief valve is the valve hanging out the side of the pump, it may be adjustable.
No, all one price, unless you go for phone call, which I don't recommend.
Relief valve is likley the extended top piece on the pump body/ A valve with spring . the more spring tension, the more pressure.
Sure, there is not many things that I don't deal with.