Mower Fuel Tap
They're usually plastic but older mowers may have a metal tap fitted. A fuel tap is also known as a fuel valve, shut off valve, or gas tap. It's sometimes marked with an arrow to show gas flow direction.
Some larger mowers will have a fuel valve solenoid which automatically shuts off fuel when the engine is shut off.
Where is it?
It's fitted between the gas tank and the carburetor, somewhere along the rubber fuel line.
The fuel valve isn't fitted to all mowers, and on others it may be incorporated into the carburetor.
What Is A Fuel Solenoid?
What's it do?
The fuel solenoid operates with the the ignition key.
Its job is to stop gas flow to the engine when you shut the mower off.
How to Use it?
The gas valve seen here in the off position.
Some valves will have an on/off symbol.
Gas seen here in the on position.
When to Use it?
When fuel floods the cylinder it can cause a few different problems:
Hydro-locking the engine - cylinder fills with gas which stops the engine cranking
Fuel can saturate the plug causing a no start
Fuel can spill onto the air filter preventing proper air flow
Fuel can seep into the crankcase causing a high oil level, and a smoky engine
Can I Fit a Valve?
Tools needed are gloves, rags, knife or sharp pliers, cable ties or fuel line clamps.
Go ahead and cut your fuel line any where you have good access to work.
If you fuel line is bad, now's the time to take care of it.
3 Push On
Finally fit your hose clamps or cable ties. I like cable ties - they're fast, but only single use.
Now turn fuel on and check for leaks. Nice work!