Overview
This 20” guide bar and chain combo is a direct-fit aftermarket replacement designed for quick, hassle-free swaps on your chainsaw. It ships as a matched set so you get a properly paired bar and chain right out of the box, saving you the trouble of sourcing each piece separately. Ideal for homeowners who need a reliable spare or a fresh cutting setup without the OEM price tag.
Key specifications
- Bar length: 20”
- Drive links: 81DL
- Includes: guide bar and chain (matched set)
- Material: hardened alloy bar with chrome-plated chain
Compatibility
Engineered to fit Stihl MS271 saws and other models sharing the same bar-mount pattern. Always double-check your saw’s model number against the full compatibility list before ordering, since mount studs and oiler holes can vary between production years.
Installation notes
Remove the side cover, slide the old bar off the studs, and clean any sawdust from the bar-mount area and oil port. Seat the new bar on the studs, loop the chain around the sprocket and bar nose, then hand-tighten the cover nuts. Adjust chain tension until the chain pulls away from the bar bottom about 1/8 inch and snaps back, then torque the nuts securely.
Common questions
Q: Will this 20-inch bar and chain combo fit my Stihl MS271 without any modifications?
Yes, this combo is made to be compatible with the Stihl MS271, so it should mount properly with the correct bar studs, tensioner location, and drive fit for that saw. Before installing, it’s still smart to confirm your sprocket, chain pitch, and gauge match your current setup, especially if your saw was previously converted to a different bar length.
Q: Does switching my MS271 to this 20-inch guide bar affect chain tensioning or cutting performance?
A 20-inch bar is a common working length for the MS271, but proper chain tension becomes especially important because a longer chain has more opportunity to loosen as it warms up. Tension it so the drive links stay engaged in the bar groove while the chain still pulls around by hand, and keep the chain sharp to avoid making the saw feel underpowered in harder wood.
Q: What should I check when installing and maintaining this 20-inch bar and chain combo on my Stihl MS271?
When installing, make sure the chain is facing the correct cutting direction on the top of the bar, the tensioner pin is seated properly, and the bar oil hole is clean and aligned. For maintenance, regularly clean the bar groove, check oil flow before cutting, and flip the bar periodically to promote even rail wear.
