fatter36

I don't have it on me, but I called up Lycoming Tech support and they gave me the correct part number

Otto Instrument Service in Ontario, CA can repair these clocks

i just filed it square without adding more material. worked fine.

i had a starting continuity problem and found the issue by tracing the connections in all switch settings, L, R, Both, Start. removed switch from panel, removed upper avionics access panel - used multimeter and electrical diagram to diagnose all positions working correctly. based on your kickback and non-starting problem, you might have an issue with one of the connections being on the wrong terminal or grounded out somewhere along its path. there are lots of wires on the back of that switch and it is easy to get them mixed up. once the wires into the switch are positively identified, make your life easier and label all the wires for the next time you have to do some troubleshooting - paid lots of dividends for me.

$150 + shipping. Removed during interior refresh. Thanks, Chris

i ended up disassembling the caps, and sanding bottom edge of the tab flat using sandpaper. snaps over nice and tight now. pairing this with some built-up weld repair would probably be a superior solution - but the simple version ended up working well for me and was very easy to execute. new o-rings, fuel cap leak test, sign off by A&P - job done.

thanks for the feedback, i had adjusted the tension and it just makes it pop up more (and at a certain point, they can open easily). I might try the squaring off the corner by filing. logically it seems like this should work. i'll post the results.

relatively new owner and first time posting here. i tried searching as i am sure some others have the same issue. the tab on the shaw aero 431-9 fuel caps sit up proud from the surface of the wing - i think the years of use have rounded off the tab, so the downwards tension does pulls it slightly up. can't seem to find a ready supply of new - or newer caps. does anyone have a remedy? (or some nice new caps they wish to part with?) i read filing the corner of the tab back square may address the issue, but wanted some feedback before attempting. thanks