20 Inch Chainsaw Chain for Stihl 23RS3 78

20-inch replacement chain fitment overview

This 20-inch chainsaw chain is a replacement option for saws using a 20-inch guide bar with a .325” pitch, .050” gauge, and 78 drive links. It is listed as a fit for Stihl 024, 026, 026P, 028, 029, 030, 031, 032, 034, 036, MS 260, MS 270, and MS 271 chainsaw models when equipped with the matching bar and chain spec.

It also replaces chain references including Stihl 23RS3 78, Husqvarna 501 84 08-78, H23 78, H78, and 20LPX078G. The package includes 1 20-inch full chisel saw chain.

Will this chain fit your saw?

To confirm fitment, match all four chain specs on your current setup:

• Bar length: 20”
• Pitch: .325”
• Gauge: .050”
• Drive link count: 78

If even one of those measurements is different, the chain will not fit correctly. Bar length alone is not enough to confirm compatibility, since many 20-inch bars use different pitch, gauge, or drive-link counts.

This chain is listed as a replacement for these OEM part numbers or chain references:

• Stihl 23RS3 78
• Husqvarna 501 84 08-78
• H23 78
• H78
• 20LPX078G

This chain is also listed for these Stihl chainsaw models:

• 024
• 026
• 026P
• 028
• 029
• 030
• 031
• 032
• 034
• 036
• MS 260
• MS 270
• MS 271

Important: those saw models can sometimes be fitted with different bar and chain combinations. Before purchasing, verify your guide bar is 20” and .050” gauge, and confirm the chain uses .325” pitch and 78 drive links. The most reliable method is to read the markings on the guide bar or compare the specs from your current chain packaging or owner information.

Replacing the chain

Use basic chainsaw safety practices and make sure the saw cannot start during service.

1. Turn the saw off, let it cool, and disconnect the spark plug wire if applicable.
2. Remove the clutch cover, then back off the chain tension so the old chain can be lifted off the bar and drive sprocket.
3. Clean the bar groove, oil hole, and clutch cover area before installing the new chain.
4. Fit the new chain around the drive sprocket and along the guide bar, making sure the cutter edges on the top of the bar face forward.
5. Reinstall the clutch cover and adjust chain tension until the chain sits snugly in the bar groove but can still be pulled around by hand with a gloved hand.
6. Tighten the bar nuts securely, then recheck tension after a short test run, since a new chain can stretch slightly during initial use.

Keeping it sharp

• Keep the chain properly tensioned. A chain that is too loose can derail, while an overtight chain wears the bar, sprocket, and engine components faster.
• Maintain chain lubrication. Check bar oil level often and make sure oil is reaching the chain, especially with a full chisel chain that is intended to cut efficiently.
• Touch up the cutters regularly instead of waiting until the chain is very dull. A sharp chain cuts faster, runs cooler, and reduces strain on the saw.

FAQ

Does this chain fit every Stihl MS 271?

No. It is listed for the MS 271 only when the saw is using a 20” bar with .325” pitch, .050” gauge, and 78 drive links. Always confirm the bar and chain specs before ordering.

What does 23RS3 78 mean?

On this listing, 23RS3 78 is one of the replacement chain references for this fitment. The key specs to match are still 20” bar length, .325” pitch, .050” gauge, and 78 drive links.

Is this a full chisel chain?

Yes. The listing identifies it as a 20-inch full chisel saw chain. Full chisel chains are typically chosen for fast cutting performance in clean wood, but they need to be kept sharp for best results.