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Stiff petcock. (Read 136 times)

arteacher

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Stiff petcock.
05/09/11 at 15:39:33

I decided to run the bike to reserve to check the mileage, but when I went to put it on reserve it was really stiff. Through great good fortune I was able to coast into a gas station, right up to the pump.
How do I loosen it? Will WD40 damage anything? I was planning to WD40 it, work it loose, then put a drop or two of oil on it It will move, just not easily.
BTW 49 MPG combined.

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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28653 Tucson Az Gender:	Re: Stiff petcock. Reply #1 - 05/09/11 at 15:52:43 Quote: Stiff petcock,... Brag, brag, brag.... ... Yeah, some WD40... ...
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Stiff petcock. Reply #2 - 05/09/11 at 16:15:49 WD 40 is one of the lubes for petcocks.
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Stiff petcock. Reply #3 - 05/09/11 at 19:11:38 so you got a stiffy from doing what? this may help... Digger wrote on 05/23/10 at 21:20:18: verslagen1 wrote on 03/15/10 at 23:40:19: ....You remember what that gas proof lube was? I use Krytox RFE. You're not gonna like the price, though! I found an unopened tube of it on eBay for about 20 bucks a while back.
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ralfyguy Serious Thumper Offline Posts: 932	Re: Stiff petcock. Reply #4 - 05/09/11 at 19:19:15 Those petcocks are always hard to turn. I bought a brand new one last year, and after a few weeks it started moving tough almost the same way the old one was. I guess it's a design flaw.
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Boofer Serious Thumper Offline Nearly too old. Posts: 1760 N Ms Gender:	Re: Stiff petcock. Reply #5 - 05/09/11 at 21:30:42 I move mine from time to time to keep it from freezing up, but it's always been hard to turn.
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Routy Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2280 Winston Oregon Gender:	Re: Stiff petcock. Reply #6 - 05/10/11 at 07:08:21 Someone said you can take them apart......somehow, and clean and lube them. Mine used to turn hard, and heres what I did to make it now turn easier,.....nothing ! Figures !
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Stiff petcock. Reply #7 - 05/10/11 at 08:06:52 not rocket science unscrew the back to get at the diaphragm unsnap the faceplate and the lever comes off push the valve out from the diaphragm side, don't mess up the little spring, or prime/reserve won't work.
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ralfyguy

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Re: Stiff petcock.
Reply #8 - 05/10/11 at 10:34:09

It seems that the lube gets washed away from the gas. When I bought my new one last year, it turned just beautifully easy. I thought Cheesy

ang, how nice that turns now! And then after a few weeks it is almost down to as stiff as the old one was. Well at least one thing is good about a new petcock: The diaphragm is new also, so I expect several years without trouble from a ruptured diaphragm and the resulting vacuum problems.

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lukeduck Full Member Offline "Come to terms with the ass that bears you" Posts: 166 Ontario, Ca. Gender:	Re: Stiff petcock. Reply #9 - 05/10/11 at 15:08:50 Basic routine I try to follow-fill fuel tank-set petcock to reserve-ride 15-20 miles-switch back to run-exercises the petcock-keeps crap from building up in the fuel tank-don't know if this really works, but,petcocks on my bikes all work nice and smooth. Don,t forget to set back to run (you will only forget once)
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