BMW F650GS Fuel Pump Wrench

BMW F650GS - Fuel Pump Wrench

This wrench is designed to loosen/tighten the ring on a BMW F650GS motorcycle (single cylinder model) that holds the fuel pump to the fuel tank. The wrench may work on other models but I cannot confirm.

The wrench is designed to engage four nubs on the plastic ring and accepts a 1/2" drive ratchet as a means of rotation (although rotating by hand appears to be enough to loosen the ring).

NOTE: I provided two versions of the tool here as v1 did NOT hold up to the torque applied by my 1/2" ratchet. I created v2 of the tool to address this shortcoming (however it is harder to print).

DISCLAIMER: Use this tool at your own risk. The BMW factory service manual states the Union nut to fuel tank should be tightened to 36 Nm (~26.5 ft-lbs) for my F650GS Dakar. It's up to you to look this spec up for your model and make sure that torque is reached using this tool or any other. If in doubt, buy a genuine fuel tank tool.

"Fuel leaks are bad." -Captain Obvious