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  #1  
Old 12th January 2019
Len PA Len PA is offline
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Default Fuel Petcock

Is the stock petcock (Fuel Valve Assembly 62125-55B) on a 71 XLCH 3/8NPT?
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  #2  
Old 12th January 2019
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mine was on 74ch
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  #3  
Old 12th January 2019
Popgadget Popgadget is offline
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My 74 XLH IS 3/8.
The parts manual calls out the 62125-55B for mine, so I would think it’s safe to say that it’s 3/8 NPT.
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  #4  
Old 13th January 2019
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yes its 3/8 npt. i actually used fittings and a ball valve from the hardware store briefly to replace a leaker and get back on the road once.
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  #5  
Old 13th January 2019
Len PA Len PA is offline
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Default Fuel petcock

Thanks everyone, are the rebuildable/repairable? Am I better off buying a new one?
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  #6  
Old 13th January 2019
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which style you got? stock 2 flapper or later single (jap style) i dont have a parts book with me but off the pn you posted id say stock. non rebuildable unfortunately, i pick up any good ones i see at meets normally for 3 or 4 bucks out of random parts boxes
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  #7  
Old 13th January 2019
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They can be shimmed to allow more flow, but I think that's the extent of any repair. I've not seen much good posted about the repops. Seems like Simeli claimed blowing through them with compressed air would salvage most leaky petcocks, but I can't find the thread.
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Old 14th January 2019
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Be very careful with the after market twin tap valves, it’s a while ago but I can still remember most of what ended as quite a bad experience. I had one that gave up a short time after fitting it. The bike kept shutting down but would start up again after about 10-12 kicks and take me maybe 100 yards, after repeating this 7 or 8 times I was getting really hot and tired, this got to me so much that I lost my temper, I wound her up too tight, dumped the clutch leaving a long black line down the road and I just held her at it, (if I was angry at that point I was a lot worse when I had to strip and fix the top end). When I eventually got home I traced the problem to the new petcock putting out an extremely low volume of fuel. The internals had just degraded or broke up and were restricting flow.
I was an idiot......Davi.
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