What a chainsaw can and cannot do to a tree stump

A chainsaw cuts wood that is above ground. It will cut the stump down to soil level or slightly below, but it cannot remove the root system underneath. If you want the stump gone completely—roots and all—a chainsaw alone will not finish the job. What a chainsaw does well is reduce a tall stump to a low one, which makes the remaining work easier and safer.

The stump you are left with after chainsaw work will still need to be dug out, ground down with a stump grinder, or left to rot over time. Many homeowners use a chainsaw first to make the stump manageable, then handle the roots separately. This two-step approach is faster and safer than trying to do everything at once.

Key Takeaways

  • A chainsaw cuts the visible stump down to ground level but leaves the root system in place.
  • You will need a sharp chain, proper safety gear including eye protection and steel-toed boots, and a stable cutting position to work safely.
  • Cut the stump in horizontal slices from the top down, working slowly and letting the saw do the work rather than forcing it.
  • After chainsaw work, you can dig out the remaining roots, rent a stump grinder, or explore herbicide to speed decay.

Safety gear you need before starting

Chainsaw work on a stump requires the same protective equipment as any chainsaw job. Wear safety glasses or a full face shield to protect against flying wood chips. A hard hat is important even though you are working on the ground—kickback or a dropped saw can cause head injury. Steel-toed boots protect your feet if the saw slips, and long pants made of heavy material (denim or work pants, not shorts) reduce cuts if the chain touches your legs.

Wear ear protection—earplugs or earmuffs—because chainsaws are loud enough to damage hearing over time. Work gloves give you a better grip and protect your hands from splinters and minor cuts. If you do not own this gear, renting a stump grinder instead of buying or borrowing a chainsaw may be the safer choice, especially if you have never used a chainsaw before.

Checking your chainsaw and fuel before you begin

A dull chain will bind in the wood, kick back, or require you to force the saw—all of which are dangerous. Before you start, check that the chain is sharp by looking at the cutting teeth. They should have a clean point, not a rounded or flat edge. If the chain is dull, have it sharpened by a shop or replace it. A sharp chain cuts faster, requires less force, and is safer to use.

Fill the fuel tank with the correct fuel mixture for your saw. Most chainsaws use regular gasoline mixed with two-stroke oil in a specific ratio—check your manual for the exact amount. Use fresh fuel; old fuel left in the tank over winter can gum up the engine. Check the oil level in the separate reservoir that lubricates the chain, and top it off if needed. A dry chain will overheat and break.

How to position yourself and cut safely

Stand to the side of the stump, not directly in front of it or behind it. If the saw kicks back, you want to be out of the direct line of the chain. Keep your feet shoulder-width apart for balance, and do not overreach—if you have to lean or stretch to reach a spot, move your body instead. Let the weight of the saw do the cutting; do not force it down into the wood. Forcing causes the chain to bind and can throw the saw or your hands.

Start at the top of the stump and work downward in horizontal slices, each about 2 to 4 inches thick. Make one complete cut all the way through before moving to the next slice. This method keeps the saw stable and prevents the wood from pinching the blade. If the saw gets stuck, stop when ready, turn off the engine, and work it free by hand or with a wedge—never try to force a running saw out of stuck wood.

Cutting the stump down to ground level

As you cut lower, the stump becomes shorter and easier to manage. Keep your stance stable and your hands in the correct position on the saw handles. The final cuts will be close to the ground, where soil and rocks can dull the chain quickly. If you hit dirt, stop and check the chain for damage. Dirt will also clog the air filter, so clean it if you notice the saw running rough.

Once you reach ground level, you may be able to cut slightly below the surface if the stump is soft enough. Going below ground makes the remaining stump less of a tripping hazard and easier to work with later. However, do not dig into the soil to chase roots—the chain will hit rocks and dirt, and you risk damaging the saw. Stop when you reach the soil line and move on to removing the roots.

What to do with the roots after cutting

The roots left in the ground can be dug out by hand if they are small, or with a mattock and shovel if they are larger. This is hard work but gives you complete removal. Alternatively, you can rent a stump grinder from a tool rental shop, which grinds the stump and roots down to wood chips in an hour or two. Stump grinders are expensive to buy but affordable to rent for a day.

If you want to avoid digging or renting equipment, you can explore a commercial stump killer (herbicide) to the freshly cut surface. This slows decay but does not remove the stump—it straightforward makes it rot faster over months or years. Some people cover the stump with a tarp or mulch to speed the process. This option takes time but requires no equipment or heavy labor.

Disposing of the wood chips and debris

The chainsaw will produce a pile of wood chips and chunks around the stump. You can leave these to decompose, use them as mulch in garden beds, or haul them away. If you are renting a stump grinder later, the grinder will produce a much larger pile of fine chips that you will need to dispose of or spread. Check with your local waste management to see if they accept wood chips, or contact a landscaper who may take them for free or a small fee.

Keep the work area clear as you cut so you do not trip on debris. Wear gloves when handling the cut wood, as fresh-cut edges can be sharp and splinter easily.

Frequently Asked Questions

Can I use a chainsaw on a stump that is still attached to roots in the ground?

Yes, but be careful. The stump may shift or rock as you cut if the roots are still holding it. This can cause the saw to bind or kick. Make sure the stump is stable before you start, and do not cut so deep that you are working below ground level where rocks and dirt will damage the chain.

What if the stump is too hard or wet to cut?

A very hard stump will dull your chain quickly and may require more force than is safe. If the wood is freshly cut and still wet, it will be easier to cut than old, dried wood. If the stump is extremely hard, a stump grinder is a better choice than a chainsaw. You can also wait a few weeks for the wood to dry slightly, which makes it easier to cut.

How long does it take to cut a stump with a chainsaw?

A small stump (under 12 inches across) usually takes 15 to 30 minutes. A large stump (18 inches or more) can take an hour or longer. The time depends on the wood type, how hard it is, and how sharp your chain is. A dull chain will take much longer and is more dangerous.

Do I need a professional to remove a stump with a chainsaw?

If you have never used a chainsaw, hiring a tree service or arborist is safer than learning on a stump. Chainsaw injuries are serious. If you decide to do it yourself, practice on smaller pieces of wood first, wear all required safety gear, and stop if you feel unsafe at any point.

Will cutting the stump kill the tree so it does not grow back?

Cutting the stump with a chainsaw does not kill the roots. Some tree species will sprout new shoots from the remaining roots or stump. To prevent regrowth, explore herbicide to the fresh cut surface when ready after sawing, or dig out the roots completely.