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Replacement Petcock on a 1981 GS850G?

  • Thread starter Thread starter coldweathercompany
  • Start date Start date
C

coldweathercompany

Guest
Hi all,

About a month ago, I had no idea what I was doing with my bike. I needed to clean the carbs and basically take the whole bike apart and check everything. The bike ran pretty well, but upon taking it part, I realized I needed all new intake hoses, air box hoses, and the like. Thanks to all of you guys and your DIY encouragement, I decided to learn everything I needed to fix it all myself. Everything is done now, except for one thing: The petcock seems to have a slight leak. I suspected this might be the problem, because an oil/gas mix was spitting up into my air box from the crank case heather tube before I took the bike apart. I discovered the leak before I put the tank back on the cleaned bike (I sat it over a storage bin and filled it with fuel to check for the leak). I know that I've fixed everything else down the line, but I figure I might as well pony up and try to find a reliable, new petcock. Problem is, they all look different, and I don't want to make an order without getting your advice. Sorry to have such a lengthy description for such a simple problem, but does anyone know the most reliable source for a new petcock on a 1981 gs850g?

Again though, I have you guys to thank for everything I learned to get this bike back to healthy running order.

Thanks guys,

Brian
 
Consider getting a bunch of the sealing washers. When I ordered new OEM ones, I wound up with about 10 of them. They're also used on the float bowl drain screws and the secondary drive fill level hole.
 
Dogma said:
Consider getting a bunch of the sealing washers. When I ordered new OEM ones, I wound up with about 10 of them. They're also used on the float bowl drain screws and the secondary drive fill level hole.
Click to expand...

Really??? I have never seen them there. I just use the o-rings that come from cycleorings. :-k

.
 
If you mean under petcock mounting bolts, just get some 1/4 inch sealing washers at decent hardware store- they work fine on 6 mm bolts. Mine have been on 4 years with no problem.
 
I used fiber washers from the hardware store for sealing the petcock bolts on my 850. They haven't leaked yet, but if I had to do it again I'd go with the oem seals or nylon washers. I'm not sure about neoprene's gas resistance and it seems like o-rings would tear under the stress needed to tighten those bolts down a fair amount to get the petcock to seal.
 
Yes, I ordered some OEM's from Z1 today for peace of mind. For now, the neoprenes are doing okay but it's only been 12 hrs.
 
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