Fixing That Fuel Petcock Leak
  • Back2-2
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    Fixing That Fuel Petcock Leak

    by Back2-2 » Fri Dec 08, 2017 1:28 pm

    Ok - here's a good one for all of you CRF guy's.
    When [ not if ] your fuel petcock starts leaking. Fuels dry out and crack the rubber internal disc and they also wear out from the pressure from the valve face depressing the disc. You will find that the internal petcock parts are not listed for the valve. Repair requires that the entire new petcock valve is replaced as a unit. So I have a easy way to fix it for about a quarter of the cost of the OEM full replacement petcock valve. What is leaking is the inner fuel gasket [ round rubber disc with four holes ]. You can buy a Honda OEM part number 16955-HA2-005 gasket. This is actually listed for the Honda CR250 MX bikes. The CR disc is exactly a direct replacement for the CRF disc that is not available. Easy repair, drain the fuel, two cross point screws on the valve face. Plug and play and off you go. :D I actually think many of the other bikes petcock valves use this same disc but not 100% sure on that. I do know it appears to be the same disc that is for the Kawasaki KX motocross bikes also.

    Anyone that needs the spec's on the discs size feel free to PM me. Hope this helps a few riders. ;)
    Neil
    Black Hills of SD
    Life without Motorcycles would just be boring, really boring
    Honda 450X. Yamaha Tracer GT900. HD Fat Boy. Triumph Bonneville. Yamaha Majesty 400. Yamaha Grizzly. Yamaha Wolverine. Yamaha TW200
  • Aussiecrf230
    Posts:1964
    Joined:Fri Jan 06, 2006 11:11 pm

    Re: Fixing That Fuel Petcock Leak

    by Aussiecrf230 » Fri Dec 08, 2017 4:49 pm

    Good one Neil, there is a lot of things that only come as an assemble now a days. Not good for tinkers like ourselves but probably good if you just want to make it work and have the cash to do it.
    Don't suppose you know much about the screens in the petcocks.
    Mine basic disolved/melted in the 230. Just wonder if it is the same as say the 250x or maybe old xr80? I can get a generic minibike one cheap but still want the reserve like the Honda tap.
    Ray
    Australia

    CRF230F 2004
    C30F Power Up needle
    Mains 132
    Idle 45
    2 turns out
    Baffle out, Screens In

    It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas
  • Back2-2
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    Re: Fixing That Fuel Petcock Leak

    by Back2-2 » Fri Dec 08, 2017 5:42 pm

    No, I have never had to replace a screen on a petcock. Most the Honda including the carbed street bikes use that same filter. Maybe a bike scrap yard ? Maybe check bike CRF's Only OEM parts site for an older CBR900RR filler they may have been available if I recall correctly.
    Neil
    Black Hills of SD
    Life without Motorcycles would just be boring, really boring
    Honda 450X. Yamaha Tracer GT900. HD Fat Boy. Triumph Bonneville. Yamaha Majesty 400. Yamaha Grizzly. Yamaha Wolverine. Yamaha TW200
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    crfsonly
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    Re: Fixing That Fuel Petcock Leak

    by crfsonly » Fri Dec 08, 2017 7:14 pm

    Nice work! Did you take any photos? If so, email them to me and I'll create a How-To for others to follow. If this something that is happening to a lot of others I'll get this part in stock and in our catalog.

    Ken
    OEM Parts for Honda - Yamaha - Suzuki - Kawasaki: http://yeltrik.com
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  • Aussiecrf230
    Posts:1964
    Joined:Fri Jan 06, 2006 11:11 pm

    Re: Fixing That Fuel Petcock Leak

    by Aussiecrf230 » Sat Dec 09, 2017 1:08 am

    And if we keep buying parts for older bikes that just happen to fit our newer bikes the manufacturers tend to still keep them available. Suzuki bits are still available for old ts series from 1974. It might be only the bits that keep them running but it makes it easier for us that like our old farm and bush bikes.
  • Back2-2
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    Re: Fixing That Fuel Petcock Leak

    by Back2-2 » Mon Dec 11, 2017 9:08 am

    Hey Ken, I did not take any photo's. I was so excited to see if my research had panned out I just threw the new disc in and filled that bad boy up with gas. :D My thinking on the disc replacement also was "It is so easy a cave man can do it" so I just buttoned it back up and "Bob's your Uncle" done. I could take pic's of the old & new disc's and the petcock assy. with some description but I don't know it would really help other than someone seeing it in the how to section if they were looking for how to fix their leaking valve ?
    Neil
    Black Hills of SD
    Life without Motorcycles would just be boring, really boring
    Honda 450X. Yamaha Tracer GT900. HD Fat Boy. Triumph Bonneville. Yamaha Majesty 400. Yamaha Grizzly. Yamaha Wolverine. Yamaha TW200
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    crfsonly
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    Re: Fixing That Fuel Petcock Leak

    by crfsonly » Mon Dec 11, 2017 4:10 pm

    Understand. Yeah, I'm sure it's an easy fix. Some don't dive in to something like this without some photo reassurance. ;-)
    OEM Parts for Honda - Yamaha - Suzuki - Kawasaki: http://yeltrik.com
    _________________
    CRF Parts and Accessories: http://crfsonly.com
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    JimDirt
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    Re: Fixing That Fuel Petcock Leak

    by JimDirt » Fri Dec 15, 2017 11:27 am

    Good Job Neil !!

    Were you just scouring the parts fiche till you found something ?? , or did you need one for a CR and found that it was the same after purchase ??

    Not a disassembly procedure picture Ken , but i happened to have a disassembled petcock picture from when Neil and I were talking about this a while back , so at least now everyone can see what sequence the parts are in , which should help with re-assembly

    NOTE: , this one is for the 450R *02* , but the X petcock is the same with the only difference being the valve detents and the holes actually used because of the Reserve position on the X , but the "gasket" itself is the exact same part for both models , so the X would use 3 of the 4 holes and the R only uses 2 of the 4 holes

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