Chainsaws, Pole Saws and Chain Sharpeners

Engine size, bar length and who holds the saw

Gas chainsaws are described by engine displacement in cc and bar length in inches, such as 62 cc with a 20 inch bar; bigger engines drive longer bars through thicker timber but weigh more and tire the user. Small displacement and short bars, like 25 cc, suit pruning and light work, and telescoping pole saws, such as 6.5 to 9 ft, reach branches without a ladder. Cordless mini saws, with 6 or 8 inch bars and 21 V packs, handle light limbing. Two-stroke saws need fuel mixed with oil at the maker's ratio.

Chains, files and milling rails that must match

A replacement chain must match the saw's bar and sprocket in three ways: pitch, gauge and number of drive links. These values are usually stamped on the bar near its base, so read them before you choose a chain. Sharpening needs a file or grinder suited to the chain: file diameter follows the pitch, and a bench or hand-crank sharpener should list the chain types it handles. A chainsaw milling rail guide helps cut straight boards from logs, but milling is slow and hard on a small saw, so use a saw with enough power.

Questions about Chainsaws, Pole Saws and Chain Sharpeners

How do I find my chainsaw chain size?

Look for stamped numbers on the guide bar near the base: they give the chain's pitch, gauge and drive-link count. Alternatively check the manual or the old chain's packaging. All three must match your bar, and the sprocket must suit the pitch.

Should I choose a gas or a cordless chainsaw?

Gas saws have more power and run as long as you refuel, which suits felling and large logs. Cordless saws are quieter, start instantly and need less maintenance, so they suit pruning, limbing and storm cleanup. Check battery voltage and capacity, and plan for spare packs on bigger jobs.

What safety gear do I need for a chainsaw?

Wear a helmet, eye and hearing protection, sturdy gloves, cut-resistant chaps or trousers and boots with good grip whenever you run a chainsaw. Keep the chain sharp and correctly tensioned, since a dull chain makes you force the cut.