How to Use a Chainsaw? | Safety and Technique Guide

Using a chainsaw safely requires full PPE, proper starting on firm ground, a firm two-handed grip, and cutting at waist level at full throttle.

How to use a chainsaw safely comes down to a handful of non-negotiable steps: the right gear, the right starting procedure, and the right cutting posture. This guide walks through each one in the order you’ll actually use them, from gearing up to shutting down. Chainsaw injuries are almost always preventable — the rules aren’t complicated, but they have to be followed every single time.

What Safety Gear Do You Need Before Starting?

Full personal protective equipment is not optional for chainsaw operation. The standard setup includes a hard hat with face guard and mesh visor, safety glasses or goggles worn under the visor, hearing protection (ear muffs or plugs), chainsaw chaps or pants with cut-resistant fibers, heavy gloves with a non-slip grip, and steel-toe boots with good traction. OSHA requires this combination for professional logging, and residential users should hold themselves to the same standard — one mistake without chaps can cost you a leg.

Chainsaw chaps are the piece most beginners skip and the one that matters most. They’re designed to stop the chain within milliseconds of contact by jamming the saw’s sprocket with loose fibers. Wear them every time, no exceptions.

How Do You Start a Chainsaw?

Starting a chainsaw follows either a cold-start or warm-start procedure. Cold-start is for an engine at room temperature; warm-start is for one that was recently running. Both begin with the saw on flat, firm ground with the chain brake engaged forward until it clicks. For battery or corded electric models, the start procedure is simpler — insert the battery or plug in, engage the safety lock, and squeeze the trigger — but the PPE and ground rules stay the same.

Cold-start procedure for gas saws (STIHL method applies to most brands):

• Set the saw on level ground and push the chain brake forward until it locks.
• Pull the choke control fully out to the cold-start position (marked ON or with a snowflake symbol).
• If your saw has a decompression valve, press it to release piston pressure. Then press the primer bulb six times to push fuel into the carburetor.
• Grip the front handle firmly with your left hand. Place the toe of your right foot into the rear handle — the C-shaped grip at the back — to brace the saw against the ground.
• Pull the starter handle with your right hand until you feel resistance, then give one sharp, brisk pull. The saw should sputter or fire once.
• Push the choke control in to the run position. Pull the starter again until the engine runs steadily. Once it starts, squeeze the throttle trigger quickly to disengage the high-idle setting, and the saw will idle normally.
• Before cutting, pull the chain brake backward to disengage it, then squeeze the throttle to confirm smooth chain movement.

Warm-start procedure: If the saw was running recently, set the master control to the warm-start position (choke partially engaged instead of fully closed). Skip the primer and decompression valve. Pull once or twice — the saw should start within two pulls.

Using a Chainsaw Safely: Rules That Apply Today

Safe cutting comes down to grip, stance, and knowing where the saw is dangerous. The left hand grips the front handle with the thumb wrapped under the handle — this is the single most important grip detail, because a thumb resting on top of the handle can’t counter the upward force of a kickback. The right hand grips the rear handle. Stand with feet apart and the left foot slightly forward of the right for balance.

Cut at waist level or below. Never cut above shoulder height, where you lose leverage and control. Run the engine at full throttle through the entire cut — partial throttle increases the chance of the chain catching and jerking the saw. Let the saw’s weight and chain speed do the work; pushing harder doesn’t cut faster, it increases kickback risk.

The guide bar tip is the kickback zone. If that upper corner of the bar contacts wood, the saw can kick up and back toward your face in a fraction of a second. Keep the bar tip clear of branches, logs, and the ground. Avoid contact with mud or dirt — an embedded chain digs in and stops instantly, which also triggers kickback. Per the Canadian Centre for Occupational Health and Safety, keep bystanders at least 10 to 16 feet away during ground cuts and farther during tree felling. Shut off the engine and engage the chain brake before setting the saw down for any reason. CCOHS chainsaw safe-use guidelines cover these rules in full detail.

Common Chainsaw Mistakes and How to Fix Them

The table below shows the most frequent errors beginners make, why they’re dangerous, and what to do instead.

Chainsaw Cutting Technique — The Right Way

Good technique starts before the chain touches wood. Plan the cut so the log or branch won’t pinch the chain as it falls — cut from the top on a supported log and from the bottom on a cantilevered log. Let the saw reach full throttle before it contacts the wood, then maintain steady, even pressure without forcing. The saw should throw square chips, not dust. If you see dust, the chain is dull and needs sharpening.

For limbing, work from the base of the trunk toward the tip, cutting branches one at a time. Stand on the uphill side of the log when cutting on a slope so the log can’t roll toward you. For bucking a felled tree into sections, use a sawbuck or sturdy supports to keep the log off the ground and stable. Never cut with the saw between your legs or while straddling a log. And never cut a branch under tension — a limb under spring load can whip when released and pull the saw with it.

Choosing the Right Chainsaw for the Job

The right chainsaw depends on what you’re cutting. Light pruning and small firewood are well served by a 12 to 14-inch bar on a battery or corded electric model. For tree felling and larger firewood, an 18 to 20-inch bar on a gas or high-torque battery saw gives you the reach and power to finish the job without fighting the tool. If you’re in the market, our tested roundup of the best chainsaws for cutting trees compares top models by task and budget so you can pick the right one the first time.

Chainsaw Maintenance Checklist

A saw that’s maintained correctly is safer and starts easier. Run through this checklist before every session and after every tank of fuel — it takes about two minutes and prevents the most common equipment failures that lead to kickback or stalling.

• Check chain tension — it should be snug against the bar rail with no sag. Adjust if it’s loose.
• Inspect the chain for dull or damaged cutters. A sharp chain produces square chips, not sawdust.
• Fill the bar-oil reservoir and confirm the oiler is working. Running dry destroys the bar in minutes.
• Clean the air filter and the cooling fins around the cylinder. Dust buildup causes overheating and power loss.
• Test the chain brake — engage it and squeeze the throttle. The chain should not move while the brake is locked.
• Top off the fuel mix before you start so you don’t run dry mid-cut, which can overheat the engine.