Hi, your 544 has a German D-239 Diesel engine. The Bosch pump has no bleed screws, just loosen one of the injector lines at the rear of the pump and start engine. Becareful not to come in contact with the high pressure Diesel fuel from the injector line. If after re-tightening the injector line, engine is still not running properly, check fuel flow from tank to fuel filters, then filters to injection pump. Some models had a steel braided fuel line between the injection pump inlet and the last fuel filter. This line can collapse inside and restrict fuel flow to pump. Another problem can be a blocked return fuel line.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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