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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » BodyParts-Seats, Fairings,Lights,Pegs,Rear Sets, Bars, Grips, Clip ons, Mods » Stuck gas cap « Previous Next »

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Mrgrumpy
Posted on Monday, October 01, 2007 - 05:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Any one quote me vrebatum the instructions for removing the blast's gas cap? Mine has been sitting for quite some time and I tried to take the cap off and it won't come off. It seems to be sticking on the leading edge. Any thoughts on why this is and how to work around it.
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Ezblast
Posted on Monday, October 01, 2007 - 06:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dis-assemble the tank top filler with allens, then move with a screwdriver - don't know why it stuck, had simular problems with the locking, fixed it.
GT - JBOTDS! EZ

(Message edited by ezblast on October 02, 2007)
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Gearheaderiko
Posted on Friday, September 12, 2008 - 08:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I learned a lot about why the caps go bad and its not a bad cap to start with.
Problem is that the fuel cap boot starts to shrink with age or non use. Then it clamps itself tightly around the gas cap. The gas cap wasnt designed for this kind of friction, so when you turn the 'lock' to open the gas cap, the plastic locking piece of the cap stays put. So the cap is loose but you cant remove it. The plastic lock piece of the cap is 'keyed' (like "0", a flat sided zero), so when you turn the lock/tab the "0" gets rounded out into a perfect circle. The gas cap is now 'broken' and you cant get it off without pulling all the allen screws and rollover valve out of the filler. If its not gotten bad enough, some can just tighten the gas cap nut and fix it (a loose nut can also cause the same stuck cap problem, but the more plausible cause is the shrunken boot).

The solution seems to be to keep the fuel cap boot lubricated with gasoline. If storing the bike, manually lubricate the boot with something else (I'm not sure what would be safest-suggestions?).Replace the fuel cap boot (but since I dont have a new boot to compare too, I dont know if there is any difference).
The old fuel cap boot (not to be confused with "Das Boot") can be stretched out with a can or bottle, but pulling the boot off is more effective and storing the bike with a bottle sticking out of the tank is inconvenient!

New fuel cap is $45. New "boot" is $12. Unless they've improved the cap (dont think so, I dont have an updated part #), sticking will happen again if the boot isnt 'repaired'.

The gas cap can also get stuck from the top o-ring sticking, but once pried up it should come off.
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Andymnelson
Posted on Saturday, October 04, 2008 - 12:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Mine used to stick all the time- use or no use. I took a bench grinder to the 2 large tabs on the cap...ever so slightly. Works great now!
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