Hi there. I got airlocked on an 8111 despite the fuel gauge reading a half full tank. Visual inspection of the tank didnt tell me much as depth perception is difficult in a top down view. In my opinion the gauge is really only a toy as it oscillates wildly with the fuel sloshing around in the tank. Also what is the procedure for doing a full bleed on these tractors. I undid the screw above the fuel filters and hand pumped the plunger but there still appears to be a hint of Airlock it starts chugging every so often and I have to clutch and get the revs up again but it could work away the finest for a good while.