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Gen-2 Aftermarket Fuel Pump Install

3/6/2025

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PictureClick on image for the eBay link
UPDATE: Not Recommended!
At 50 miles the pump began to seep fuel and very soon after the pump motor operated but no pumping action. Stick with K&L:

https://www.ebay.com/itm/335825276242

The OEM fuel pumps for our carbureted VFRs have been unavailable for years. When Project 41 was found to be in need of a pump replacement, I had to come up with a solution. Checking my stash of old OEM pumps I found nothing useable, and didn't want to experiment with the Chinese replacements, but I thought this eBay pump might be worth a try. A seller in Poland offers these for $61, including shipping. The brand is MTM, from Germany, and they've been making fuel pumps since 1989. The size and shape looked right in the photos, the fuel tubes have the needed 90° curves, and there's a 2-wire connector. I ordered one and it arrived within ten days.

(Below) Looking it over, I noted two installation issues. The MTM has a male electrical connector and the Gen-2 needs a female (you'll find the same issue if you're adapting a later model VFR fuel pump to the Gen-2). No worries, I snipped off the correct connector from my selection of junk OEM pumps and soldered in place. Note that the MTM's black wire is ground and Honda's grounds are always green. I add some heat shrink and later wrap it all in electrical tape.

(Below) The second thing I will need to address are the smaller fuel tubes found on the MTM pump; 8mm (5/16") vs 10mm (3/8"). This is quickly solved with the 5/16" Motion Pro fuel line I use on all my carburetor rebuilds. This Tygon line easily stretches over the 3/8" filter outlet and I then use an in-line adaptor, available on eBay or Amazon, to make the connection to the 3/8" carb supply line. The MTM pump conveniently labels the inlet tube, which is on the same side as the Honda OEM pump.
(Below) I was very pleased to find that the OEM "shock rubber," as Honda calls it, fit the MTM perfectly. The rubber is still available from Honda (16711-KAF-305, $16.44). The completed assembly is installed on the bike and tested with a relay jumper wire to activate the pump. It flows well and the pump slows to a stop as the float bowls fill, just as it should. I'm calling this fix a success and hope it's a long-term solution.
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