Can I rebuild the petcocks on my 73?

Both of my petcocks have full flow in the off position, mega PITA when trying to work on carbs. Is there parts available to rebuild these or do I have to go aftermarket? Thanks guys.

It appears Yamaha still sells the 4 hole rubber disc that fits behind the arm and Mike's used to have rebuild kits. That petcock was used on all 650s up to '77 so is rather common.

http://www.boats.net/parts/search/Yamaha/Motorcycle/1973/TX650/FUEL TANK/parts.html

Hey Saggs- I just ordered my re-build kits for my 75-650B from Mike's, they should be here on Monday. I also ordered the gaskets for the petcock screws that mount the petcocks to the tank as one of mine has sprouted a leak. I'll let you know how I make out if you wish.

Thanks for the encouraging response. Hey Thunderbutt, please let me know how you make out with the stuff from Mike's that would be very helpful!

Saggs- The rebuild kits for the fuel petcocks purchased from Mike's just arrived yesterday. The kits look very complete including everything you will need for the rebuild. It even includes the fiber washers for the screws holding the petcocks to the tank, and the o-ring between the tank and petcocks. Part numbers for my 75-B are 20-0014. I also purchased a new horn and float needle/valve seats. Shipping was ridiculous costing $13.90 !!!!!!! It could have been shipped thru US Mail for half that. Other than the shipping, the kits look good so far, I plan on installing them this afternoon. Hope this helps

Jerry

Mike's shipping is a bit steep, that's why most try to order enough to get free shipping. Most times you don't have to try hard to spend $150.
Leo