How to Replace the Chain on a Husqvarna Chainsaw 450
The Husqvarna 450 chainsaw is possibly the most popular choice of homeowners and professionals in equal measure who need a powerful yet efficient balance. As with any chainsaw, its chain will inevitably wear out and need replacement. Knowing how to replace the chain on a Husqvarna chainsaw 450 will have your saw cutting effectively and safely.
When to Replace the Chain
A dull or broken chain makes cutting harder and less safe. You'll want to replace the chain if:
- The saw smokes while it's cutting.
- You need to push harder to cut through the woods.
- Cuts turn out uneven or rough.
- The chain teeth look worn out or broken, easily seen.
Sharpening can extend the life of a chain, but eventually, a new chain is in order.
Tools You'll Need
- To replace the chain on your Husqvarna 450, gather:
- A replacement chain (correct gauge and size for the 450).
- A scrench (hybrid screwdriver-wrench).
- Protective gloves.
Replacing Chain on Husqvarna Chainsaw 450: Step-by-Step
| Step | Description |
|---|---|
| Step 1: Prepare the Chainsaw | Make sure the chainsaw is turned off and at room temperature. Remove the spark plug to prevent it from turning on by mistake, and place the saw on a horizontal surface. |
| Step 2: Remove the Side Cover | Loosen the nuts securing the clutch cover with your scrench. Remove the cover and expose the guide bar and old chain. |
| Step 3: Relieve Tension and Remove the Old Chain | Pull the guide bar back about an inch to take tension off the chain. Remove the old chain slowly and carefully from the sprocket and bar. |
| Step 4: Install the New Chain | Place the new chain along the bar so the cutting teeth are facing the direction of travel at the top of the bar. Place it around the sprocket and ensure it is seated correctly in the guide bar groove. |
| Step 5: Adjust the Chain Tension | Pull the guide bar out to tension, then tighten the tensioning screw. The chain ought to rest tightly on the bar yet still be hand-pulled. |
| Step 6: Reassemble Chainsaw | Replace the side cover and nuts. Check the chain tension again before finally tightening the nuts. Replace the spark plug. |
| Step 7: Test the Saw | Start the chainsaw and let it idle. Check the chain to slide smoothly and not sag. Test cut to ensure the chain will cut cleanly without slipping. |
Tips on Extending the Life of Your New Chain
- Sharpen the chain on a regular basis and maintain it at a sharp level.
- Don't cut ice, rocks, and soil.
- Check the reservoir of oil and have the chain lubricated at all times.
- Ensure you check the guide bar and sprocket when replacing the chain.
Summary
Changing the chain on a Husqvarna chainsaw 450 isn’t hard, but it’s part of your maintenance that represents a healthy investment. Getting it right, again, is the safety, reliability, and longevity of your saw. The better shape your chain is in, the faster, safer, and more efficient your cutting tasks will be.
If you’re looking to keep your Husqvarna 450 running in peak condition, we’ve got you covered. Our store also offers genuine Husqvarna tune-up kits and replacement parts to help you extend your chainsaw's life. With all genuine parts and proper maintenance, your saw will always be equipped for the most demanding jobs.
Recent Posts
-
How to Replace the Chain on a Husqvarna Chainsaw 450
The Husqvarna 450 chainsaw is possibly the most popular choice of homeowners and professionals in eq …Sep 23rd 2025 -
What You Need to Know About Your Husqvarna Weed Eater: Restringing to Starting
If you're fortunate enough to be the owner of a Husqvarna weed eater, you probably have a pretty goo …Aug 25th 2025 -
Replacing the Pull Cord on a Husqvarna Chainsaw and Blower
The pull cord is one of the most utilized components of both chainsaws and blowers. It can wear or b …Aug 15th 2025