Overview
Packaged as a set of 2, this chain is a direct replacement for Portland 57436 models. A sharp chain means less effort, cleaner cuts, and safer operation compared to pushing through wood with worn teeth.
Key specifications
- Bar length: 18”
- Quantity: 2 chains per pack
Compatibility
This replacement chain works with Portland 57436. Double-check your model number against the listing to ensure a correct match before installation.
Installation notes
Power down the saw and disconnect the battery or spark plug lead. Remove the side cover and release bar tension. Take the old chain off the bar and sprocket, then thread the new chain into the bar groove, confirming the cutting edges face forward on the top rail. Set the tension so the chain pulls freely without sagging away from the bar, and do a brief test run to verify everything tracks correctly.
Common questions
Q: Will this 2-pack of 18 inch chains fit my Portland 57436 chainsaw, or do I need to match anything else besides the bar length?
Yes, these chains are made for the Portland 57436 with an 18 inch bar, so they are intended to fit that saw. It’s still smart to confirm your current chain’s drive link count, pitch, and gauge against your saw or old chain before installation, since those specs must all match for proper fit and safe operation.
Q: I’m replacing the chain on my Portland 57436 for the first time—do I need to do anything special when installing one of these 18 inch chains?
Make sure the cutting teeth on the top of the bar face forward, then set the chain tension so it sits snugly against the bar but can still be pulled around by hand with gloves on. After a few minutes of cutting, recheck the tension because a new chain will usually stretch slightly during initial use.
Q: Since this comes with 2 chains for an 18 inch Portland 57436, how should I maintain them to make them last longer?
Keep the chain properly tensioned, make sure the bar oil reservoir stays filled, and clean sawdust from the bar groove and sprocket area regularly. Rotating between the two chains and sharpening each one before it gets overly dull will help reduce wear on the bar and improve cutting performance.
