Self-Propelled Lawn Mower Stalls in Tall Grass

Are you trying to bush whack some really tall grass and your lawn mower is not cutting it? Does it start to bog down as you ease into that tall grass and then will die?

Well, the reality of this situation is that you are probably biting off more than you can chew! A self-propelled lawn mower is not a garden tractor that will cut down tall grass. You need to manage your lawn better and cut it on time. Yes, there are times when that is not possible, but it really is a lawn management problem and not necessarily a lawn mower problem.

The problem with tall grass is that it collects under the deck and starts to clog it up. When it clogs up, the blade will stop spinning and that is what stalls out the engine on your self-propelled lawn mower.

Yes, you could have an engine efficiency problem with the lawn mower if the grass is slightly taller than normal and that would need to be checked out. It could be a fuel or ignition problem or it could simply mean that your lawn mower blade needs sharpening.

By determining if the problem is with you or the lawn mower is the first step to resolving the mower stalling in tall grass.

My Lawn Mower Bogs Down in Thicker Grass

You care cruising along and cutting the grass when you hit a patch that is a little thicker than normal. All of a sudden the mower begins to bog down and may even die. You are now wondering why it does that?

If your lawn mower works well under normal conditions, it could be a mechanical, electrical or fuel problem. Each of these systems will need to be troubleshot to determine what the problem is. One by one is the best way to proceed.

Since you really cannot put a load on the engine unless you are cutting grass, let’s check some easy things first. Is the spark plug normal looking with a brownish appearance on the electrode? Is the fuel filter clogging up? Are the valves properly adjusted? Is one cylinder not getting spark or fuel?

Check each component to find out what exactly is causing the problem. Some things such as spark will require a spark tester to determine if the spark is good or not. The other items are a visual inspection to see if things are working as they should be.

If you find something wrong, adjust or change the component and retest to see what results you get to ensure that your lawn mower is not bogging down.

Should you need technical help with your lawn mower, check our Locations page for a lawn mower repair shop near you.