Conclusion: If you don't use a good stabilizer in your small engine, you are looking for carb trouble.
Conclusion: Don't forget to check your oil level every time before running your machine. And change the oil, at least once a season, depending on how often you use it. Click here to see: How to change your lawn mower oil.
Issue #3: Air filter. In lawn mowers, blowers, and trimmers, this is a common issue I run into. The owner simply forgets or doesn't know how to check and clean the air filter. So dust, dirt and grass builds up until the machine can no longer breath. Then it won't start, or becomes very hard to start and will not idle properly. Fortunately, the solution is simple. Just remove the air filter cover, remove the filter and blow it out with compressed air.
IMPORTANT: When removing and cleaning the air filter, be very careful not to let any of the dirt and dust from the filter get inside the carburetor. So clean the filter well away from the carb, and cover the carb with a clean cloth while the filter is off.
Conclusion: If you are having trouble starting your machine or keeping it running, check the air filter. Click here to see: How to change your lawn mower air filter for a common push mower.