My Honda powered lawn mower stalls after 2-3 minutes of mowing. It coughs, sputters then blows air filter off
Yes, it literally blows the air filter cover and filter off the engine. So far I have replaced the spark plug 3 times, cleaned the gas bowl, verified the gas line is not blocked, operated with and without the grass catcher bag, changed blades and drained
Sounds like there is a problem with the intake valve not closing, or not closing all the way. Take it to a qualified mechanic and have them check compression. If there is little or no compression, you can be pretty sure it is the valve sticking.
