20" replacement saw chain

§ Saw Chains · SKU B0F52YQMYW

20" replacement saw chain

$22 ★ 3.8

20" replacement saw chain for CRAFTSMAN CMXGSAMY462S S205 20-in. 46cc 2-Cycle Gas Chainsaw (S205) Model #CMXGSAMY462S Item #1028257

Bar length20"
Pitch3/8"
Gauge.050""
Drive links72DL
CategorySaw Chains
Part numberB0F52YQMYW
ConditionNew — aftermarket replacement

Fitment last verified:

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Overview

This aftermarket 20-inch replacement chain is designed to fit select Craftsman chainsaw models. When the factory chain wears out, loses its edge after multiple sharpenings, or stretches past the tensioner’s range, this chain gets you back to cutting without waiting for a dealer order. It’s built to OEM dimensions for a direct fit.

Key specifications

  • Bar length: 20”
  • Type: Semi-chisel (aftermarket replacement)

Compatibility

This chain is manufactured as a direct-fit replacement for select Craftsman chainsaws listed in the compatibility section above. Always cross-check the pitch, gauge, and drive-link count stamped on your current bar before ordering — even within the same brand, different models can require different chain specs.

Installation notes

Before swapping the chain, set the saw on a stable surface and let the engine cool if gas-powered — or remove the battery on cordless models. Loosen the bar nuts, slide the bar forward to slacken the old chain, and lift it off the sprocket and bar nose. When seating the new 20-inch chain, make sure the cutters point forward along the top edge of the bar. Snug the bar nuts, then adjust the tensioning screw until the chain pulls away from the bar about 1/8 inch and snaps back cleanly.

Common questions

Q: Will this 20” replacement saw chain fit my CRAFTSMAN CMXGSAMY462S S205 46cc chainsaw with the factory 20-inch bar?

Yes, this chain is intended for the CRAFTSMAN CMXGSAMY462S S205 using the stock 20-inch bar. If your saw still has the original bar setup, this is the correct replacement length; if the bar has been changed to a different size, match the new bar length and chain specs before installing.

Q: Do I need any special steps to install this chain on the CRAFTSMAN S205, or is it a standard chain swap?

It installs like a standard chain replacement: loosen the side cover, back off the chain tensioner, fit the chain around the clutch drum and bar, then reinstall and tension it correctly. Make sure the cutter edges on the top of the bar face forward, and recheck chain tension after the first few minutes of cutting since a new chain will usually stretch slightly.

Q: How should I maintain this 20-inch chain on my CMXGSAMY462S so it cuts properly and lasts longer?

Keep the chain properly tensioned, use clean bar-and-chain oil, and make sure the bar oiling hole and groove stay free of sawdust buildup. Touch up the cutters regularly instead of waiting until the chain is very dull, and inspect the drive links and depth gauges for wear each time you clean the saw.

Before you buy — how to verify fitment

  1. Find the bar stamp. Look on the side of your current guide bar for the pitch, gauge, and drive-link count.
  2. Match all three numbers. Pitch (3/8), gauge (.050"), and drive links (72DL) must all match.
  3. Check bar length. Measure cutting length from the tip to where the bar enters the saw body — this should match 20".
  4. Confirm your saw model against the compatibility list above. If your model isn't listed, the chain may still fit if pitch/gauge/DL match.

Frequently asked questions

How do I know this chain fits my saw?

Match three numbers: pitch, gauge, and drive-link count. All three must match the stamp on your current bar. If even one is off, the chain won't fit safely.

How do I measure pitch and gauge?

Pitch is the distance between any three consecutive rivets, divided by two. Gauge is the thickness of the drive links — measure with a caliper or check the bar stamp. Our guide covers both in detail.

How long does a replacement chain last?

With proper tension and occasional sharpening, an aftermarket chain lasts 3–5 cords of firewood or about 5 hours of active cutting — roughly the same as OEM.

Can I sharpen this chain or is it single-use?

Absolutely sharpen it. A quality replacement chain can be sharpened 3–5 times before the cutters are too short. Keep a round file matched to the cutter diameter.

Where to buy

This part is available through Amazon with free returns on most orders. We've verified the fitment listed above — check the live listing for current price, stock, and delivery options.

Check current price on Amazon

Affiliate disclosure: we may earn a commission when you purchase through this link, at no extra cost to you.

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