Husqvarna 445 Chainsaw Chain Size (5 Pro Tips For Precise Fit)

Have you ever felt that sinking feeling when you’re ready to tackle a pile of logs, only to realize your chainsaw chain doesn’t quite fit? It’s happened to me more times than I’d like to admit. A properly fitted chain on your Husqvarna 445 is crucial, not just for efficient cutting, but also for your safety and the longevity of your saw. Over the years, I’ve learned that getting the right chain size is more than just looking at a number – it’s about understanding the nuances of your saw, the type of wood you’re cutting, and how to maintain everything for optimal performance. Let me share some pro tips I’ve picked up along the way to ensure you always get a precise fit for your Husqvarna 445.

Husqvarna 445 Chainsaw Chain Size: 5 Pro Tips for Precise Fit

Choosing the correct chainsaw chain for your Husqvarna 445 is essential for safe and efficient operation. A mismatched chain can lead to poor cutting performance, increased wear on your saw, and potentially dangerous kickback. These pro tips will guide you through the process of selecting the right chain, ensuring a precise fit, and optimizing your cutting experience.

1. Understanding the Essential Chain Specifications

Before diving into specific measurements, it’s crucial to understand the three key specifications that define a chainsaw chain: pitch, gauge, and drive link count. These parameters must match your Husqvarna 445’s requirements to ensure proper fit and function.

Pitch: The pitch is the distance between any three consecutive rivets on the chain, divided by two. It’s typically expressed in inches. For the Husqvarna 445, the most common pitch is .325 inches. This means the distance between those rivets, halved, equals .325 inches. Using the wrong pitch will prevent the chain from meshing correctly with the sprocket and guide bar.
Gauge: The gauge refers to the thickness of the drive links – the part of the chain that fits into the guide bar groove. The standard gauge for the Husqvarna 445 is .050 inches. This ensures the chain sits snugly within the bar groove without being too tight or loose. A gauge that is too small will cause the chain to wobble, while a gauge that is too large will bind and prevent smooth operation.
Drive Link Count: The drive link count is the total number of drive links on the chain. This number is specific to the length of the guide bar on your chainsaw. The Husqvarna 445 commonly uses guide bars ranging from 16 to 18 inches. For a 16-inch bar, you’ll typically need a chain with 66 drive links. For an 18-inch bar, you’ll usually need 72 drive links. Always confirm the correct drive link count for your specific bar length.

Why These Specs Matter: I once tried to save a few bucks by using a chain with the wrong gauge on my Husqvarna 445. The chain kept jumping off the bar, and the saw vibrated excessively. It was a frustrating and potentially dangerous experience. Stick to the recommended specs – it’s not worth the risk!

Takeaway: Know your pitch, gauge, and drive link count. These three specifications are the foundation for selecting the correct chain for your Husqvarna 445.

2. Locating the Chain Information on Your Chainsaw or Guide Bar

Finding the correct chain information can sometimes feel like a treasure hunt, but it’s usually readily available. There are several places to look for the specifications you need.

Owner’s Manual: The owner’s manual is your best friend. It will explicitly state the recommended chain pitch, gauge, and drive link count for your Husqvarna 445 and the various guide bar lengths you can use.
Guide Bar: Many guide bars have the chain information stamped directly onto them. Look for markings near the mounting end of the bar, indicating the pitch and gauge. Sometimes, the drive link count will also be listed, especially on Husqvarna bars.
Existing Chain: If you already have a chain that fits your saw, you can use it as a reference. However, be careful – if the previous owner used the wrong chain, you’ll be perpetuating the error. If you’re unsure, it’s always best to double-check with the owner’s manual or a reliable source.
Husqvarna Dealer: Your local Husqvarna dealer is an invaluable resource. They can quickly identify the correct chain for your saw based on the model number and guide bar length. They can also provide expert advice on chain types and maintenance.

My Experience: I remember inheriting an old Husqvarna chainsaw from my grandfather. The guide bar was worn, and the markings were barely legible. I took the saw to my local Husqvarna dealer, and they were able to identify the correct chain size in minutes. They even showed me how to properly tension the chain!

Takeaway: Consult the owner’s manual, check the guide bar, or visit a Husqvarna dealer to find the correct chain specifications.

3. Measuring Your Existing Chain (If Necessary)

If you can’t find the chain information on your saw or guide bar, you can measure your existing chain to determine its specifications. This requires a bit of precision, but it’s a valuable skill to have.

Measuring Pitch: Use a ruler or caliper to measure the distance between three consecutive rivets on the chain. Divide this measurement by two. For example, if the distance is .650 inches, the pitch is .325 inches (.650 / 2 = .325).
Measuring Gauge: Use a caliper to measure the thickness of a drive link where it fits into the guide bar groove. This measurement should be .050 inches for the Husqvarna 445.
Counting Drive Links: Carefully count the number of drive links on the chain. This is the most straightforward measurement, but it’s crucial to be accurate.

Tools You’ll Need:

Ruler or Caliper (digital calipers are highly recommended for accuracy)
Magnifying Glass (optional, for easier viewing of small markings)

Important Note: Measuring an old, worn chain can be tricky, as the dimensions may have changed slightly due to wear. If possible, compare your measurements with the specifications in the owner’s manual or consult a Husqvarna dealer to confirm your findings.

Takeaway: Learn to measure the pitch, gauge, and drive link count of your chainsaw chain. This skill will come in handy when you need to replace your chain and can’t find the original specifications.

4. Choosing the Right Chain Type for Your Cutting Needs

Once you know the correct chain size, you can explore different chain types to optimize your cutting performance. Chains are designed with varying tooth geometries and materials to suit different applications.

Full Chisel Chains: These chains have square-cornered teeth that provide aggressive cutting and are ideal for clean wood. They cut faster but dull more quickly when used in dirty or abrasive conditions.
Semi-Chisel Chains: Semi-chisel chains have rounded corners on the teeth, making them more durable and less prone to dulling in dirty wood. They are a good all-around choice for general cutting tasks.
Low-Kickback Chains: These chains are designed with features that reduce the risk of kickback, a dangerous phenomenon where the saw suddenly kicks back towards the operator. They are a good choice for beginners or anyone concerned about safety.
Ripping Chains: Ripping chains are specifically designed for cutting wood parallel to the grain, such as when milling lumber. They have a different tooth geometry than cross-cutting chains and produce a smoother cut.

My Preference: For most of my firewood cutting, I prefer using a semi-chisel chain on my Husqvarna 445. It strikes a good balance between cutting speed and durability, and it holds up well when cutting through dirty or knotty wood.

Chain Brands: Reputable chainsaw chain brands include:

Oregon: Known for their wide range of chains and high quality.
Stihl: Stihl chains are designed to work optimally with Stihl chainsaws, but they can also be used on other brands.
Husqvarna: Husqvarna offers a variety of chains specifically designed for their chainsaws.

Takeaway: Consider the type of wood you’ll be cutting and your experience level when choosing a chain type.

5. Installing and Tensioning the Chain Correctly

Even with the correct chain size and type, proper installation and tensioning are critical for safe and efficient operation. A poorly installed or tensioned chain can lead to poor cutting performance, premature wear, and potentially dangerous situations.

Installation:
1. Safety First: Always wear gloves when handling a chainsaw chain, as the teeth are sharp.
2. Loosen the Bar Nuts: Loosen the bar nuts on the chainsaw to allow you to adjust the position of the guide bar.
3. Position the Chain: Place the chain around the guide bar, ensuring that the cutting teeth are facing in the correct direction (they should point forward on the top of the bar).
4. Align the Drive Links: Fit the drive links into the groove of the guide bar.
5. Mount the Bar: Position the guide bar onto the chainsaw, aligning the bar studs with the holes in the bar.
6. Adjust Tension: Use the chain tensioning mechanism (usually a screw on the side of the saw) to adjust the chain tension.
Tensioning:
1. Proper Tension: The chain should be snug against the underside of the guide bar, but you should still be able to pull it around the bar by hand.
2. Check for Sag: Lift the chain in the middle of the guide bar. There should be a slight sag, but the drive links should not come completely out of the bar groove. A good rule of thumb is that you should be able to pull the chain out about the thickness of a dime.
3. Tighten the Bar Nuts: Once the chain is properly tensioned, tighten the bar nuts securely.
4. Recheck Tension: After tightening the bar nuts, recheck the chain tension to ensure it hasn’t changed.

Common Mistakes to Avoid:

Over-Tensioning: An over-tensioned chain will bind and cause excessive wear on the bar and chain.
Under-Tensioning: An under-tensioned chain will be loose and prone to derailing.
Forgetting to Tighten Bar Nuts: Always double-check that the bar nuts are securely tightened before starting the saw.

Pro Tip: After installing a new chain, run the saw for a few minutes and then recheck the tension. New chains tend to stretch slightly during the initial break-in period.

Takeaway: Practice proper chain installation and tensioning techniques to ensure safe and efficient chainsaw operation.

Bonus Tip: Chain Maintenance for Longevity

Maintaining your chainsaw chain is just as important as selecting the right size. A sharp, well-maintained chain will cut faster, require less effort, and last longer.

Sharpening: Regularly sharpen your chain using a chainsaw file or a chain grinder. The frequency of sharpening will depend on the type of wood you’re cutting and the condition of the chain. I usually sharpen my chain after every few tanks of gas.
Cleaning: Keep your chain clean by removing sawdust and debris after each use. Use a brush or compressed air to clean the chain and guide bar groove.
Lubrication: Ensure that the chain is properly lubricated with chainsaw bar and chain oil. Check the oil level frequently and refill as needed. A dry chain will wear out quickly and can damage the guide bar.
Storage: When storing your chainsaw, remove the chain and clean it thoroughly. Store the chain in a container of oil to prevent rust.

Tools for Chain Maintenance:

Chainsaw File and Filing Guide
Chain Grinder (optional)
Brush for Cleaning
Chainsaw Bar and Chain Oil
Container for Storing Chain

My Routine: After each use, I clean my Husqvarna 445, sharpen the chain if needed, and lubricate the bar and chain. This simple routine helps to keep my saw in top condition and extends the life of the chain.

Takeaway: Regular chain maintenance is essential for maximizing the performance and lifespan of your chainsaw chain.

By following these pro tips, you can ensure that you always have the correct chain size for your Husqvarna 445, optimize your cutting performance, and maintain a safe working environment. Remember, a little bit of knowledge and effort can go a long way in extending the life of your chainsaw and making your wood-cutting tasks more enjoyable. Now get out there and start cutting!

Husqvarna 445 Chainsaw Chain Size (5 Pro Tips for Precise Fit)