I just bought this machine. The problem I am having is when I want to curl the bucket the engine stalls. I have changed the hydraulic filter, (cut open and no metal) Fuel filters, engine oil. The machine walks fine, climbs up steep hills, does every function with no problem except for curling the bucket.. When it stalls a little black smoke comes out exhaust. The machine has 5,500 hours on it..
have you found out what was causing the issue?