Overview
This aftermarket 20-inch replacement chain is designed to fit select Remington chainsaw models. It serves as a drop-in replacement when the original chain becomes dull past the point of resharpening, develops a damaged cutter, or has stretched beyond the tensioner’s adjustment range. Having a spare on the shelf eliminates trips to the dealer mid-project.
Key specifications
- Bar length: 20”
- Pitch: .325
- Drive links: 78DL
- Type: Semi-chisel (aftermarket replacement)
Compatibility
Engineered to match the specifications of select Remington chainsaw models, this chain drops in without modification. Before ordering, verify the three critical numbers — pitch, gauge, and drive-link count — against the stamp on your guide bar. A mismatch in any one dimension means the chain won’t fit safely.
Installation notes
On a longer 20-inch bar, proper tension is critical. Power down the saw and loosen the bar-retaining nuts. Push the bar toward the engine to create slack, then remove the old chain. Route the new chain around the bar nose and sprocket with cutters facing forward on top. Pull the bar back to take up slack, tighten the nuts, and fine-tune tension with the adjuster screw. The chain should lift slightly off the bar and snap back without drooping.
Common questions
Q: Will this Morocca 2PC 20” chain fit my Remington RM4620, or is it only for the RM4618 and RM5520?
Yes, this chain is made to fit the Remington RM4620 and is also listed for the RM4618 and RM5520 when the saw is using a 20-inch bar with .325 pitch and 78 drive links. Before installing, it’s still smart to confirm your current chain markings or owner’s manual so the bar length, pitch, and drive link count all match.
Q: My current chain is a 20-inch chain, but how do I know if this 78DL .325 chain is the correct replacement?
A 20-inch length alone is not enough, because chains also have to match the pitch and drive link count for your bar and sprocket setup. If your existing chain is .325 pitch with 78 drive links and your saw is a Remington RM4620, RM4618, or RM5520 setup that uses those specs, this replacement should fit properly.
Q: Any tips for installing and maintaining this replacement chain on my RM4620?
When installing, make sure the cutting teeth on the top of the bar face forward, then set chain tension so the chain pulls slightly away from the bar but the drive links still stay engaged. After the first few cuts, recheck tension because a new chain can stretch slightly, and keep the chain oiled and sharpened regularly to reduce wear on the bar and clutch.
