Trying to find a hydroulic pump break down for bobcat 3023 trencer

https://trupar.com/p/bobcat-construction-agricultural-pump-fuel-6512518
A possibility.

You might need to remove the fuel tank and clean the strainer at the bottom. I had this happen to a 773 skid steer. Damn workers wanted some time off of work so they pushed a couple of handfulls of leaves into the fuel tank. It was a nightmare getting them back out.

https://www.trutechtools.com/KTT881?gdffi=82d4608f40bc44b8876f395eb04c4801&gdfms=AA2E4FA24CF04FAE92078B35724EA6B2&gclid=CjwKCAjwm-fkBRBBEiwA966fZAsEuT-jqjQSUkqiCYKjFcJQEYD3TZy0wH-WBUAOMi6w1beJpe_4uBoCHfsQAvD_BwE

you can try out some guide from here reliable-store
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Might check the fuel pressure, might have a plugged screen in the pump inlet or a weak pump.

it may b a fuelpressure issue if electric connection pk

Check the fluid level.

it could be pump. ive also found that the pickup tube breaks off causing the pump to suck air. also hows the fuel filter? could be a problem also

it can be a number of things ac clutch idler pulley trencher alternator power steering water pump and belt most likely is an old belt because its stiff and slips when cold it warms up the belt is more flexible and it grabs beater the trencher can be weak and with the cold belt it can slip