A dirty air filter will prevent air from going into the engine, so combustion will not occur, and the lawnmower will not start. The engine may also fail to work if the air filter is damaged or fitted improperly, or if the gasket has a fault.
Can you run a mower without an air filter?
Do not operate the mower without an air filter or pre-cleaner as serious engine damage can occur. … Without one of these components your engine will never start. So, if your air filter isn’t providing the right amount of air flow into the mixture, your equipment will stall, surge, and sputter as it gasps for air.
Can a dirty air filter cause a lawn mower not to start?
Dirty or Clogged Air Filter
Before the incoming air enters the carburetor, it passes through an air filter to remove dust and dirt. When the filter is doing its job, it may get clogged up with debris removed from the air and not allow a sufficient amount of air into the carburetor and prevent the engine from starting.
What happens if I run my lawn mower without an air filter?
It isn’t good for the lawn mower to keep running it with the filter removed, however, because the engine actively draws air through the intake port, and without the filter, the piston cylinder can be quickly contaminated by particles that can damage the piston seals.
Can lawn mower air filters be washed?
The first thing to do is make sure the lawn mower is off. Then pull the spark plug cord off to prevent any kind of accidents while you’re working on it. Next, remove the air filter housing. Once removed, wash the air filter in hot water and use liquid soap as its good for cutting through grease.
What is the first thing to check if a lawn mower won’t start?
If you run into problems getting your lawnmower ready for spring, try the following:
- Use fresh gas. Old gasoline can cause starting difficulties. …
- Check the spark plug. …
- Use the choke. …
- Prime the mower. …
- Check the air filter. …
- Check the cables. …
- Check for water in the fuel tank.
- Clear the starter cord of blockages.
Why does my lawnmower start then die?
If your lawn mower starts, runs briefly, then dies these are the four most common reasons that’s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
Why do I have oil in my lawn mower air filter?
An air filter consistently clogged with oil is most likely the result of turning the mower over the wrong way when you work on the blades underneath the mower deck. If you turn the mower over with the air filter down, the engine oil will leak out and into the filter, clogging it.