Here's a quick video of what I did to replace the fuel tank check valve quick disconnect o-rings on my fuel injected 2012 Harley Dyna Wide glide. It should be similar on 2000 and newer fuel injected Harley's. I used the Fuel Tool rebuild kits. One kit for the hose and one for the check valve. I don't recommend using the lower oring that comes with the check valve kit. All of the other orings fit fine. Instead use a 10mm x 14mm x 2mm for the lower oring, if you have access to Viton orings those are preferred since they are fuel resistant. I also used dental picks for removal and a 9/32 socket as a tool to push in the parts. From what ive read the hose oring is .37" OD x .19" ID .09" thickness, which is roughly the same as a 3/8" OD x 3/16" ID. For the hose oring I just used what was in the kit. Fuel Tool sells a tool for rebuilding it but it is $100, the socket trick is much cheaper. I bought the 2 rebuild kits from J&PCycles website for about $30 total. The Fuel Tool part numbers are MC300 for the check valve and MC700 for the fuel line.
On an after thought, the resistance that I was feeling may be that the valve needs to be aligned to get it to pop in. If you run into the same problem you may just need to rotate the valve part until its aligned and its should all pop right in using the socket. I hope this video helps someone. Good luck!

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