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Read articles →A one-minute hands-on clip showing exactly how to perform a fuel screw adjustment on a TYM 2515 injection pump, covering cover removal, the 13mm procedure, screwdriver placement, and a half-turn increase to address bogging issues. It's a quick how-to rather than a tested result, since the owner hasn't yet confirmed improvement. Most useful to TYM 2515 owners already familiar with the fix who want a visual reference.
Posted by the Kevocopter channel, apparently an owner documenting their own repair attempt with no confirmed outcome yet.
Remove the cover on the back of the injection pump, use a 13mm tool to loosen the nut while keeping a screwdriver in place, rotate it a half turn, then lock it back down.
A 13mm tool worked for loosening the nut on the injection pump.
The owner had bogging issues, made a half turn adjustment based on what others online were doing, and planned to report back on results.
