ATLAS 56937 Chainsaw with 2PC 18 Inch Chainsaw Chain Set

ATLAS 56937 18” Chainsaw Chain Fitment Guide

This 2-piece 18-inch replacement chain set is made for the ATLAS 56937 chainsaw. If you have that exact saw model and it uses the original 18-inch bar, this set is the intended fit from the original listing.

The main benefit here is simple: you get two replacement chains, so you can keep one installed and have a second ready to go. That helps reduce downtime and makes it easier to swap in a fresh chain when the first one gets dull.

Will this chain fit your saw?

This chain set is specifically listed for the ATLAS 56937 chainsaw with an 18” bar. The most important match point given in the listing is the bar length: 18 inches.

To confirm fitment on your saw, check these four items:

• Bar length: your saw should have an 18” guide bar
• Pitch: match the chain pitch marked on the bar or in your saw’s manual
• Gauge: match the chain gauge to the bar groove specification
• Drive-link count: count the drive links on your old chain or verify the count from the bar/manual

Even if a chainsaw has an 18-inch bar, that alone does not guarantee the chain will fit. Chains with the wrong pitch, gauge, or drive-link count may not seat correctly on the bar and sprocket.

Compatible model/part number from the original listing:

• ATLAS 56937

If your current saw is not the ATLAS 56937, or if the bar has been changed from the original setup, verify all chain specifications before ordering. Since only the 18” bar length and ATLAS 56937 model number are provided in the source listing, the pitch, gauge, and drive-link count should be confirmed directly from your existing chain, guide bar stamp, or owner’s manual.

Replacing the chain

Before replacing the chain, shut the saw off completely and remove the battery if your saw is cordless. Wear gloves when handling the chain.

1. Let the saw cool down, then remove the battery and engage the chain brake if appropriate for safe handling.
2. Loosen the side cover and remove the bar/chain cover according to your saw’s normal service procedure.
3. Take off the old chain and inspect the bar groove, drive sprocket, and oil outlet for packed sawdust or wear.
4. Install the new chain on the bar and drive sprocket, making sure the cutter direction is correct along the top of the bar.
5. Reinstall the cover, set chain tension so the chain sits snugly on the bar but can still be pulled around by hand, then fully tighten the cover hardware.
6. Recheck tension after a short test run, since a new chain may settle in quickly.

A chain that is too loose can derail. A chain that is too tight can wear the bar, sprocket, and motor unnecessarily.

Keeping it sharp

A sharp chain cuts faster, throws larger chips, and puts less strain on the saw.

• Touch up the cutters regularly instead of waiting until the chain becomes very dull.
• Keep chain oil filled and flowing; poor lubrication increases heat and dulls the cutting edges faster.
• Avoid cutting into dirt, rocks, or embedded debris in logs, since that can dull a fresh chain almost immediately.

If the saw starts producing fine dust instead of chips, pulls to one side, or requires extra pressure to cut, it is usually time to sharpen or swap chains.

FAQ

Does this set include one chain or two?

It includes two 18-inch replacement chains, as stated in the original listing.

Will this fit any 18-inch chainsaw?

No. It is specifically listed for the ATLAS 56937. An 18-inch bar is only one part of chain fitment, so pitch, gauge, and drive-link count must also match your saw’s setup.