Some Of The Reasons Your Lawn Mower May Be Leaking Gas. If you realize that your lawn mower is leaking gas, a good idea would be to stop using it and immediately get it checked out. You may want to call professionals, like us or you may want to have a look at the problem yourself. In this article, we’re going to give you some of the most frequent reasons that your lawn mower may leak gas. Pay attention.. The carburetor bowl gasket at the bottom of the carburetor may be missing or may be dried out.. The float needle may not be properly shutting the fuel off, because it may be damaged or defective.. The primer bulb’s rubber may be cracked or brittle.. The fuel shut-off solenoid may be the source of the leaks or the fuel shut-off lines may have tiny cracks or holes.. The lawn mower’s float may be stuck open.. The float bowl gasket may be missing or dried out.. The fuel lines may be dried or cracked.. The fuel pump may have a leak, a crack or tiny holes.. The fuel shut-off valve may be leaking or they fuel lines may not be fitting tightly enough on the valves. 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. We fix, repair, and tune-up small engines such as lawn mowers and snow blowers and home generators. The best part is that we come to you so no more waiting in line or traveling back and forth to fix your small engine equipment. Also if you are looking for generator repair services in Ottawa to ensure that you have sufficient power for your home if the power goes out then give us a call to book your mobile power generator repair today. We fix, repair, and tune-up all major brands of home generators to keep your powered up during power outages. The best part is that we come to you so no more waiting in line or traveling back and forth to fix your power generator for your home in Ottawa.