Wanted - Leaking pet cock

[Fuzz1961]

I have a 1977 XS 400 I’m trying to get running. It’s been sitting for several years and when I put gas in the tank the pet cock started leaking bad. Any advice where to get a rebuild kit?

 

[JPaganel]

K&L makes kits to rebuild petcocks

You can use part numbers to search for them.

XS400D/2E 1977 18-2697
XS400E/F/2F/G/H 78-81 18-2699
XS400SG/SH Special 80-81 18-2699


They are available lots of places, including eBay. Should cost $20-30.

 

[xschris]

You can replace it with a manual one and never have to worry about rebuilding it. https://www.ebay.com/itm/Yamaha-Petcock-Fuel-Gas-Tap-Valve-Right-or-Left-XS650-1978-84-SR-500-2FastMoto/201951225444?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649 I use these on all my bikes other than my 79 which is full factory restoration.

 

[Fuzz1961]

Thank you both. That's valuable info 2 me.