How to Use an Earth Auger? | Post Holes Done Right

An earth auger takes the back-breaking swing out of digging fence post holes, deck footings, and planting pits. But the machine only works with you—not against you. The right technique is simple: let the bit do the digging, keep your body weight off the powerhead, and stop the moment you hit something hard. Used the wrong way, the auger will bind, stall, or yank itself sideways. Used right, it bores a clean hole in minutes.

Set Up The Work Area First

Before you pull the starter cord, mark every hole location and clear the surrounding area of rocks, roots, and loose debris. A clean work zone gives the bit a straight start and keeps you from tripping while you’re managing a running machine.

Have underground utilities marked before you dig. In the U.S., a single call to 811 gets every utility company to flag its lines for free. Striking a buried gas line or power cable is not a repair—it’s an emergency. This step is not optional.

The Step-By-Step Digging Technique

The core procedure is the same whether you’re running a gas-powered handheld auger or a similar earth-drilling tool. These steps follow the manufacturer guidance for this class of equipment:

• Start the engine on flat ground with the auger bit clear of the soil. Let it idle briefly.
• Set the bit tip at your marked hole location, holding the auger vertical.
• Engage the throttle at low speed and let the bit’s tip establish a starting cut. Gradually increase speed as the bit sinks in.
• Apply light downward pressure only. The machine’s weight and the bit’s edge do the work. One common manual puts it plainly: “While drilling holes, do not force body weight to auger powerhead.”
• Lift and clear spoil periodically. Pull the auger out of the hole to shed loose soil, then lower it back in. This prevents the bit from sticking and keeps the hole clean.

If the auger binds or stops cutting, shut it down, lift it out, and remove the obstruction manually. Never force the bit deeper into roots or rock—that’s how bits snap and handles kick.

Safety Rules That Keep You Out Of Trouble

An earth auger is a torque machine, not a toy. The manufacturer manuals that cover this equipment are consistent on what matters:

• Wear eye, hearing, hand, and foot protection. Steel-toed boots are the right call.
• Keep your feet and legs well back from the spinning bit at all times.
• Maintain a firm grip with both hands and keep solid footing—don’t brace yourself in a stance that can twist you if the bit catches.
• Never put your body weight onto the powerhead to force the auger down.
• Always turn off the engine switch and disconnect the spark plug wire before servicing a gas unit.

That last point is the one people rush past. Even with the engine off, a gas auger can fire accidentally if the plug is still connected. Pull the wire before you so much as look at the bit.

Common Mistakes To Skip

Most damaged holes and broken equipment trace back to a handful of errors. If you avoid these, you’ll have an easier day:

• Forcing the auger downward with your body weight instead of letting the bit cut.
• Starting at full throttle before the bit has a bite, which makes it walk.
• Digging near unmarked underground utilities.
• Continuing through roots or rocks instead of stopping to remove them.

One more planning note: for fence posts, Lowe’s guidance suggests a hole diameter roughly three times the width of the post. That gives you room to set the post plumb and pack concrete or gravel around it properly.

If you’re still choosing between gas and cordless models, our roundup of top-rated electric earth augers covers tested picks and what each one handles best.

FAQs

Do I need two people to run an earth auger?

Handheld augers are designed for a single operator, but a second person helps on hard ground or large-diameter bits. One person runs the throttle and handles the machine while the other guides the handlebars and pulls the auger out to clear spoil. On heavy 8-inch bits, a helper is the safer choice.

Why does my auger keep binding up?

Binding usually means too much downward force or wet, sticky soil. Ease off the throttle, lift the auger to clear the spoil, and let the bit cut at its own pace. If it still binds, stop and check for a root or rock wrapped around the flights that needs manual removal.

How deep can a handheld earth auger dig?

Most consumer handheld augers work best for holes in the 12-to-30-inch range, which covers fence posts and most plantings. Deeper holes require an extension rod or a tow-behind model. Check your owner’s manual for the rated depth, as exceeding it stresses the gearbox.