We stock replacement parts for every final drive we sell. In the event you do need a part, you won't be waiting for replacements shipped from other parts of the world. We aim to get you repaired or replaced and back to work fast. Talk to a Parts Specialist: 800-333-0650. John Deere . 155 Main St Prince Frederick, MD 410.535.0442 Get Directions. MENU ... The 673 Loader features the high-mast parking system. ... that the parking stands do. Check the fuel pick up lines and the return lines for holes or cracks even switched these to make sure. replaced the transfer pump that runs off the cam temp bypass the filter and fuel water seperator checked the check valve (fixing to replace) Unplugged the fuel pressure sensor Put a solid hose into a clean 5 gal bucket of fuel Any Ideas? W.