Filter is empty as I had to drain lines due to to contaminated gas. Now how do I prime the lines with gas again?

SOURCE: Contaminated fuel

most gas tanks don't have a drain plug.can eith try siphoning it out with a hose called a magic siphoning hose or disconnect the fuel line and put the line in a container to catch the bad gas.

other option is to drop the fuel tank and empty

SOURCE: 6 yr old mower starts, won't run

sounds like a plugged high speed jet in carb - you can attempt to prime again , push at least 7-8 times - once it fires continue to push primer to keep running - it may clear out the carb if this doesnt work the carb will need to be removed and cleaned

SOURCE: toro recycler will run until primed gas is consumed.

The problem is that the gas that sat in the carb all winter glazed it over and gummed it up. Begin by going to any auto parts store, like an aiutozone, and getting a bottle of carb. cleaner. Seafoam is one I use. Add it to your gas, one ounce per gallon of gas. Also, pick up a can of engine starting spray.

Remove the air filter and spray the engine starting spray into the air intake. Pull start the engine and give it additional squirts of engine starting spray until it runs smoothly.

SOURCE: Engine Cranks but no gas coming up the line. I

fuel filter pluged replace it first.

SOURCE: won't start

Remove the spark plug and check the spark--it should be blue and snappy. If weak or nothing at all, try a new plug and retest. If still poor, remove the left side cover to expose the flywheel and ignition module. Check and set the module to flywheel magnet pole gap using a thin business card for a gauge--place the card on the flywheel, loosen the mounting screws on the module and allow it to pull to the magnets, tighten the screws, and rotate the flywheel to remove the card. Recheck for spark. If still nothing, remove the wire from the module that goes to the stop switch and retest again. If still dead, the module is defective and needs to be replaced. If the first test produced good spark, then place a spoonful of fuel mix in the cylinder, install the plug and see if you get a few pops. If ok, then concentrate on the fuel system. Make sure the carburetor is tight to the engine. Are you using fresh gas and mixing 50:1 with full synthetic saw oil--not boat motor oil or other petroleum based oils? It's possible that something has become defective within the carburetor, but check the lower chamber diaphragm and the fuel metering valve that it controls. Go to: http://www.drystacked.com for a very good article on the workings of the Walbro carburetor. Hope some of this helps you!