Steps To Use For Unclogging The Lawn Mower Fuel Line. There are many reasons that your fuel line may get clogged up and that fuel line tends to make your lawn mower to perform very poorly. You need to be very careful when trying to remove the clog from the line, so that you don’t damage it. Learning to unclog the lawn mower fuel line carefully, can help you to get your lawn mower back on track really quickly. We’re going to show you some of the things you need to do to have your lawn mower unclogged. Protect your eyes with safety glasses, so that if your fuel line is cleared, the fuel doesn’t spray out and into your eyes. Then, disconnect the sparkplug so that your lawnmower doesn’t turn itself on by accident, while you are working on it.. You need to unscrew your cap to the fuel tank and take a look at it to see if there has been a sealant or a plastic added. If there is something like that, it may cause a blockage. Try removing the object if there is one and if there isn’t one, then you need to drain the fuel from the tank.. See if there is a screen that should be placed over the outlet to the fuel line. Replace the screen if it looks like it is blocked.. Find the fuel filter (if equipped) and replace it. The fuel line and filter need to be replaced, because the blockage may prove almost impossible to find. You should then place your hand at the tank and blow through it so that you can see that the air can flow through it.. If your efforts to remove the blockage doesn’t work, then you need to contact the professionals.. If you are looking for small engine repair services in Ottawa, mobile car battery boosting, lawn mower and lawn tractor repairs and tune-ups, or snow blower repairs then give us a call to book your mobile small engine repair today.