It was serviced befori got ?? / Think i will service all fluides & filters have a set of filters to have on hand / using Tractor sup. hyd oil only added about 2 quarts after third fun. install & grapple use / just a wow with little fork having same isue / same tractor ??
I know that Tractor supply says it's the same, but it's not, I've seen way too many issues because of that fluid, HST and GST's need really good fluid!
Spend a little more and get the right fluid and the right filter which is equally important!
I think you need to address both, Fuel delivery and fluid.
As it's not impossible to be fuel related and fluid related!
For the fuel issue remove to out put line off the filter and check flow then work your way back.
Also check that the jet start valve (bleeder on the side of the injection pump is closed and open bleeder will do exactly what your stating.