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 does my lawn mower only run for a few seconds then dies?
You Need to Replace Old Fuel
If the gas in your lawn mower has been there for a while, evaporation can change the consistency of the liquid. The gasoline won’t move smoothly through the machine, creating a restricted gas flow and leading to an engine that runs for a few seconds and then dies.
Why does my lawnmower start but not stay running?
The carburetor might be clogged and dirty.
One inconvenient reason a lawn mower won’t stay running is a problem with the carburetor, which mixes the air and fuel for internal combustion. The carburetor bowl may be clogged, or the inlet and outlet ports are slimy from fuel residue.
Why does my mower run then die?
If your lawn mower starts, runs for a while, then dies, check the ignition coil, gas cap, and spark plug. … If your lawnmower starts up but then dies in the middle of mowing your lawn, you could have a bad spark plug. The spark plug works with the ignition coil to create a timed spark in the cylinder, causing combustion.
Why does my lawn mower shut off while mowing?
One of the most common reasons that a lawn mower might stall while it is cutting grass is that it is being overworked. This is a mechanism that is intentionally incorporated into the mower to prevent the motor from being blown.
How do you clean a carburetor on a lawn mower without removing it?
How To Clean A Carburetor On A Lawn Mower Without Removing It
- 5.1 Step 1: Turn off the lawnmower.
- 5.2 Step 2: Do an initial check-up.
- 5.3 Step 3: Remove air filter then clean it.
- 5.4 Step 4: Closely look at the insides with a flashlight or a headlamp.
- 5.5 Step 5: Look at the connecting wires in the carburetor.
How do you clean a clogged carburetor on a lawn mower?
Detailed Guide on How to Clean Lawn Mower Carburetor
- Remove the Outer Casing and Air Filter. …
- Removing the Carburetor. …
- Unbolt the carburetor’s bowl and clean the nut. …
- Use a carburetor cleaner to get rid of dirt deposits within the carburetor. …
- Replace the gasket. …
- Check its settings. …
- Reassemble and reattach.