What Size Chain Does a Stihl MS 311 Take? – The Answer!

The Stihl MS 311 is a popular mid-range chainsaw designed for a variety of tasks, from firewood cutting to tree felling. Known for its power, reliability, and durability, the MS 311 is a versatile choice for professional arborists and homeowners.

A Stihl MS 311 chainsaw uses a 3/8 inch pitch, .050 gauge chain with 72-drag links to fit a 20-inch guide bar. Stihl uses this most common chain and bar configuration on the MS 311.

Find the correct chain HERE ON AMAZON.

This combination provides the best balance of cutting speed, power, and smooth operation for a wide range of tasks, especially cutting hardwoods.

Key Features of the Stihl MS 311

The Stihl MS 311 features an efficient 4.2 bhp engine with a displacement of 59.0 cc. This powerful chainsaw has an advanced anti-vibration system, which reduces user fatigue, and an easy-to-use chain tensioning system that makes maintenance a breeze.

Understanding Chainsaw Chain Sizing

To ensure optimal performance and safety, choosing the right chain for your chainsaw is crucial. Chainsaw chain sizing depends on three key factors: chain pitch, chain gauge, and chain length.

Chain Pitch

Chain pitch refers to the distance between three consecutive chain rivets divided by two. This measurement affects the chain’s speed, power, and smoothness. Common chain pitches include 1/4 inch, .325 inch, 3/8 inch, and .404 inch.

Chain Gauge

Chain gauge is the thickness of the chain’s drive links, which fit into the guide bar. Matching the chain gauge with your chainsaw’s guide bar is essential for a proper fit. Common chain gauges include .043 inch, .050 inch, .058 inch, and .063 inch.

Chain Length

Chain length refers to the number of drive links in the chain. The correct chain length depends on the length of your chainsaw’s guide bar and the sprocket’s size.

The Right Chain for Stihl MS 311

Now that you understand the basics of chainsaw chain sizing let’s look at the right chain for your Stihl MS 311.

Recommended Chain Specs

A Stihl MS 311 chainsaw most commonly uses a 3/8 inch pitch, .050 inch gauge chain with a 72-drag link length to fit a 20-inch guide bar. This combination provides the best balance of cutting speed, power, and smooth operation for a wide range of tasks.

Alternative Chain Options

While the 3/8 inch pitch, .050 inch gauge, and 72 drag link length are the most common chain specs for the Stihl MS 311, it’s possible to use alternative chain options based on your specific needs. For example, if you require a smoother, faster cut, you can opt for a .325-inch pitch chain. However, keep in mind that changing the chain pitch may also require changing the sprocket and guide bar to ensure compatibility.

Maintaining and Replacing the Chain

To keep your Stihl MS 311 chainsaw performing at its best, it’s essential to maintain and replace the chain when necessary.

Signs That Your Chain Needs Replacing

Several signs indicate it’s time to replace your chainsaw chain:

1. Excessive wear or damage to the chain’s cutter teeth
2. Difficulty cutting even with a sharp chain
3. Chain constantly slipping off the guide bar
4. Cracks or breaks in the chain links

How to Replace the Chain

To replace the chain on your Stihl MS 311:

1. Turn off the chainsaw.
2. Remove the nuts securing the sprocket cover and remove the cover.
3. Loosen the chain tension by turning the tensioning screw counterclockwise.
4. Remove the old chain from the guide bar and sprocket.
5. Place the new chain on the guide bar, ensuring the cutter teeth face forward.
6. Reattach the sprocket cover and tighten the nuts loosely.
7. Adjust the chain tension until the chain fits snugly against the guide bar.
8. Tighten the sprocket cover nuts completely.

Proper Chain Tensioning

Ensuring the correct chain tension on your Stihl MS 311 is vital for optimal performance and safety.

How to Adjust Chain Tension

1. Turn off the chainsaw.
2. Loosen the nuts securing the sprocket cover.
3. Turn the tensioning screw clockwise to tighten the chain or counterclockwise to loosen it.
4. The chain should fit snugly against the guide bar without sagging but still be able to move freely.
5. Tighten the sprocket cover nuts and reconnect the spark plug.

Wrapping Up

Understanding the proper chain size and maintenance for your Stihl MS 311 chainsaw is essential for optimal performance, safety, and longevity. A Stihl MS 311 typically uses a 3/8 inch pitch, .050 inch gauge chain with a 72-drag link length to fit a 20-inch guide bar.

Regularly inspect your chain for signs of wear and replace it when necessary to keep your chainsaw running smoothly.

I hope this article answered your questions.

Have a great day, and be safe out there.

Steven R.

FAQs

What size chain is on a STIHL MS310?

The STIHL MS310 chainsaw commonly uses a 3/8 inch pitch, .050 inch gauge chain with a 72 drag link length to fit a 20-inch guide bar.

How do I know what size chain is on my STIHL chainsaw?

Refer to your chainsaw’s user manual for the recommended chain size, or measure the chain pitch, gauge, and length to determine the chain size.

There is also an area on the guide bar that lists the proper chain specifications to fit it. This area is usually located at the base of the guide bar right next to where it inserts into the chainsaw’s engine.

Is .325 the same as 3/8 chainsaw chain?

No, .325 and 3/8 inch are different chain pitches. The .325 pitch is smaller and offers a smoother, faster cut, while the 3/8 inch pitch provides more power and is suitable for heavy-duty tasks.

What size file for a STIHL 3/8 chain?

For a STIHL 3/8 inch chain, you’ll need a 7/32 inch (5.5 mm) round file to sharpen the cutter teeth.

How often should I replace the chain on my Stihl MS 311?

The frequency of chain replacement depends on usage and maintenance. Inspect your chain regularly for signs of wear or damage, and replace it when necessary.

With proper maintenance, a chainsaw chain can last for several months to a year or more, depending on the frequency and intensity of use.