Did you know sometimes i you do not have a primer bulb you can turn the mower upside down. Count to 5 then turn it right side up and I guarantee you it will start. I it doesn't start. Then, drop your carburetor bowl, and clean the 1/2 inch carburetor bolt that you just took off. Grab a bread tie and clean the sides and there is a little hole at the top of the carburetor bowl nut clea that. Then, take your 2 + 2 carburetor cleaner and give it a ew good squirts o the side and the top. Any Questions please ask!!!!!