QT50 QT 50 YAMAHA YAMAHOPPER GAS FUEL VALVE MOPED SCOOTER PETCOCK

Description

GAS TANK NOT INCLUDED.  ONLY SHOWN TO SHOW YOU THAT PETCOCK FITS.
New aftermarket petcock for all Yamaha Qt50s.  On and off  positions.  Built-in fuel screen and o-ring.  This is not an OEM petcock and is not advertised as such.  This petcock works just fine and just as good as OEM.
You should run a separate inline fuel filter with any petcock as the built-in fuel screen can't trap really small particles.  Clear up fuel starvation problems with a more free flowing petcock or end that nasty gas leak with a new petcock.
Easy install.  Drain tank either by opening drain valve on carburetor or by removing fuel line from carburetor and draining into an appropriate container.  Detach fuel line from old petcock.  Unscrew old petcock and make sure none of it stayed in the fuel tank.  Old petcocks are known to disintegrate and break apart.  Screw in new petcock.  Do not use teflon tape or related products.  Do not over-tighten!  If your tank is old and rusty, over tightening petcock may damage your fuel tank.  Reconnect fuel line.  Add gas and GO!
You can remove the outer plastic straw and cut it at the base if you want to adjust the size.
Do not over tighten!
If you do, it will deform o-ring and leak.
Hand tighten and then snug up with 22mm wrench or crescent wrench.
If you have old/worn out 1/4" fuel line, it will probably fit loosely over the fuel nipple on the petcock.  I recommend 3/16" fuel line which will also fit over the carb fuel inlet just fine or using an adjustable fuel line hose clamp and tightening the clamp down on the fuel line.  I've had a petcock appear to be leaking and it was just gas leaking from the fuel line where the fuel line connects to the petcock.  With an adjustable fuel line hose clamp, I just snugged it down and the leaking stopped.
If you have trouble getting the fuel line over a fuel filter, soak it in hot water first and then stretch it out by inserting some needle nose pliers and working the fuel line.  I use small zip ties to secure the fuel line over the petcock, fuel filter and carb fuel inlet or use an adjustable fuel line hose clamp.
I've included a picture of 3/16" fuel line fitting just fine over the carb fuel inlet as some have questioned whether that would work.
I've since gone to the petcock in
the
second picture which is a better petcock.