How To Put A Chain On A Chainsaw

Putting a chain on a chainsaw can be a daunting task, especially if you’ve never done it before. But don’t worry, it’s actually quite easy once you know the steps. In this article, we’ll walk you through everything you need to know, from choosing the right chain to properly tensioning it. So whether you’re a seasoned pro or a complete beginner, read on to learn how to put a chain on a chainsaw like a boss.

Before you start, you’ll need to gather a few tools. You’ll need a chainsaw, a new chain, a pair of gloves, and a wrench. You may also want to have a pair of safety glasses on hand. Once you have your tools, you’re ready to get started. The first step is to choose the right chain for your chainsaw. Chains come in a variety of sizes and types, so it’s important to choose one that is compatible with your saw. You can usually find the correct chain size in your chainsaw’s owner’s manual. Once you have the correct chain, you can start to put it on your saw.

To put the chain on your chainsaw, first, you’ll need to remove the old chain. To do this, loosen the chain tensioner and remove the chain from the bar. Once the old chain is removed, you can start to put on the new chain. Start by feeding the chain through the hole in the bar. Then, wrap the chain around the bar and connect it to the other end. Once the chain is connected, you’ll need to tension it. To do this, tighten the chain tensioner until the chain is snug but not too tight. You should be able to move the chain around the bar with your hand, but it should not be loose.

Gather the Necessary Materials

To put a chain on a chainsaw, you will need the following materials:

Chainsaw chain: The chain must be the correct size for your chainsaw. The chain size will be printed on the side of the chainsaw bar. You can also refer to the chainsaw manufacturer’s website to find the correct chain size.

* **Chain length:** Measured in “inches” or “drive links”. Longer chains are preferred for felling trees or bucking logs. Shorter chains offer better control and precision for smaller jobs.
* **Chain pitch:** Distance between drive links, in fractions of an inch (e.g., 0.325 in., 0.375 in.). A smaller pitch results in a smoother, less-aggressive cut, while a larger pitch provides increased power for challenging tasks.
* **Chain gauge:** Thickness of the drive links, measured in inches (e.g., 0.050 in., 0.058 in.). A thicker gauge offers greater durability, while a thinner gauge reduces weight and vibration.
Chainsaw bar: The bar must be the correct length for your chainsaw. The bar length will be printed on the side of the chainsaw bar. You can also refer to the chainsaw manufacturer’s website to find the correct bar length.

* **Bar length:** Determines the cutting capacity and maneuverability of the chainsaw. Longer bars enable you to cut through thicker materials, while shorter bars provide more control for delicate tasks.
* **Bar type:** Typically classified as “standard” or “low-profile.” Standard bars offer a more rugged design for demanding applications, while low-profile bars reduce weight and minimize kickback for increased safety.
Chain oil: Chain oil is used to lubricate the chain and the bar. Chain oil is typically available in a variety of formulations, each designed for specific operating conditions or chainsaw types.

* **Petroleum-based:** Most common and affordable option. Provides adequate lubrication for general-purpose cutting.
* **Biodegradable:** Environmentally friendly alternative that breaks down naturally. Ideal for sensitive areas or where environmental regulations apply.
* **Synthetic:** Offers superior lubrication, reduces wear and tear, and extends chain life. Recommended for heavy-duty or professional applications.
Wrench: You will need a wrench to tighten the chain tensioner.
Gloves: Gloves will protect your hands from the sharp chain.
Safety glasses: Safety glasses will protect your eyes from flying wood chips.

Tool	Description
Long-nose pliers	Used to hold small parts and manipulate the chain.
Flathead screwdriver	Helps release the tension and remove the side cover.
Phillips head screwdriver	Tightens or loosens screws on the chainsaw housing.

Determine the Correct Chain Size

Finding the correct chain size for your chainsaw is crucial to ensure optimal performance and safety. Chainsaws come with various bar lengths and chain sizes, so it’s essential to match them correctly.

To determine the correct chain size, follow these steps:

1. Measure the Bar Length:

Using a measuring tape, measure the distance from the tip of the bar to the base where it attaches to the saw. This measurement represents the bar length.

2. Consult the Chain Size Chart:

Refer to your chainsaw’s manufacturer’s specifications or the chain size chart typically printed on the saw body. The chart provides the recommended chain size for each bar length.

Bar Length (inches)	Chain Size (inches)
12	3/8″
14	.325″
16	.325″ or 3/8″
18	.325″ or 3/8″ or .404″
20	.325″ or 3/8″ or .404″

3. Consider Your Cutting Needs:

For heavy-duty cutting, such as felling trees, a larger chain size (e.g., 3/8″ or .404″) offers greater cutting power. For lighter tasks like limbing or pruning, a smaller chain size (e.g., .325″) provides better maneuverability.

By following these steps, you can accurately determine the correct chain size for your chainsaw, ensuring efficient and safe operation.

Inspect the Guide Bar for Damage

Before proceeding with the chain installation process, it’s crucial to thoroughly inspect the guide bar for any signs of damage. This step ensures that your chainsaw is safe and operates effectively. Any damage to the guide bar can compromise the chain’s performance and safety. Here’s a detailed checklist to help you perform a comprehensive inspection:

Chain Groove

Examine the chain groove, which is the track where the chain runs. Look for any excessive wear, cracks, or gouges. Excessive wear can cause chain derailment, while cracks or gouges can create friction and premature chain wear.

Tip

Pay special attention to the tip of the guide bar, where the chain sprocket is located. Any damage to the tip can affect chain alignment and cause premature wear. Repair or replace the guide bar if you find any significant damage.

Rails

Check the rails of the guide bar, which are the sides that guide the chain. Ensure there are no cracks or bends. Cracks can compromise the structural integrity of the guide bar, while bends can cause the chain to bind.

Bar Nose

Inspect the bar nose, which is the front end of the guide bar. Look for any damage that might hinder chain movement. A damaged bar nose can hinder cutting efficiency and increase the likelihood of chain jamming.

Lubricate the Guide Bar and Chain

Proper lubrication of the guide bar and chain is essential for the safe and efficient operation of your chainsaw. This process ensures that the chain moves smoothly along the guide bar, reducing friction and preventing premature wear. Here’s a detailed guide to lubricate the guide bar and chain:

Materials Required

Item	Description
Chainsaw bar oil	A special oil designed for lubricating chainsaws
Oiler cap	The cap on the chainsaw that covers the oil reservoir
Funnel	Optional, to prevent spills

Steps

1. Locate the Oil Reservoir

Identify the oil reservoir on your chainsaw. It is usually located on the side or back of the machine and is equipped with an oiler cap.

2. Fill the Oil Reservoir

Remove the oiler cap and insert the spout of a bar oil container. Use a funnel to prevent spills if necessary. Fill the reservoir to the appropriate level, as indicated by the manufacturer’s instructions.

3. Connect the Chain to the Guide Bar

If the chain is not already attached, connect it to the guide bar by aligning the drive links with the groove in the bar. Ensure the chain is properly tensioned according to the manufacturer’s specifications.

4. Lubricate the Chain and Guide Bar

Start the chainsaw and hold it at a slight downward angle. The automatic oiler system will start pumping oil onto the guide bar and chain. Allow the saw to run for a few seconds to ensure the lubrication is working properly. As you cut, the oil will continue to be distributed along the guide bar and chain, reducing friction and wear.

Mount the Chain on the Guide Bar

Now it’s time to mount the chain on the guide bar. Here’s a step-by-step guide:

1. Align the Chain:

Place the chain on the guide bar so that the cutting teeth are facing the correct direction. The teeth should point toward the front of the saw, away from the user.

2. Insert the Chain into the Bar Groove:

Start by inserting the chain into the groove at the end of the guide bar. Gently push the chain into the groove until it fits snugly.

3. Slide the Chain Around the Bar:

Continue sliding the chain around the guide bar, ensuring that all the teeth engage correctly with the groove. Make sure the chain is not too tight or too loose.

4. Tension the Chain:

Once the chain is fully seated, adjust the tension by rotating the tensioning screw located near the base of the guide bar. Tighten the screw until the chain has a slight amount of slack, allowing it to move freely but not sag.

5. Final Inspection:

Double-check the following before using the saw:

Chain Alignment:	Ensure the cutting teeth are facing the correct direction.
Chain Tension:	The chain should have slight slack but not sag.
Lubrication:	Fill the saw’s oil tank to lubricate the chain.
Safety Devices:	Make sure the chain brake is properly engaged.

Tension the Chain Properly

Proper chain tension is crucial for chainsaw safety and performance. Here’s a detailed guide to achieve the ideal tension:

Materials:

Gloves
Safety glasses
Chain adjustment tool (included with most chainsaws)

Steps:

Put on safety gear: Wear gloves and safety glasses.
Loosen the chain tensioner: Use the chain adjustment tool to loosen the tensioner screws on both sides of the chainsaw.
Pull the chain: Grip the chain at the midpoint and pull it away from the guide bar. The chain should move freely but not sag.
Tighten the tensioner: Gradually tighten the tensioner screws until the chain tension is correct (see below for proper tension).
Retighten the chain: After several minutes of use, recheck the chain tension and retighten as necessary.
Proper tension guidelines: The correct chain tension allows approximately 1/4 to 3/8 inch deflection when pulling the chain at the midpoint between the guide bar and the tip. Refer to the table below for specific values for different guide bar lengths.

Guide Bar Length	Deflection
12 inches	1/4 to 3/8 inch
14 inches	1/4 to 3/8 inch
16 inches	1/4 to 3/8 inch
18 inches	1/4 to 3/8 inch

Adjust the Side Plate Tension

The chain’s tension is crucial for the performance and longevity of your chainsaw. A too-tight chain can put unnecessary strain on the engine, while a too-loose chain can cause the chain to skip or snap, resulting in significant safety hazards.

Follow these steps to properly adjust the side plate tension:

1. Loosen the Chain Tension Knob

Locate the chain tension knob on the side of the chainsaw. Turn it counterclockwise to loosen it, allowing the chain to move more freely.

2. Tighten the Sprocket Cover Nut

Use a wrench to tighten the nut located in the center of the sprocket cover. This will pull the chain taut, but do not overtighten it.

3. Check the Chain Tension

With the sprocket cover nut tightened, pull the saw chain upwards with your hand. It should have about 1/2 to 3/4 inches of slack – enough to move freely without being too loose or tight.

4. Retighten the Chain Tension Knob

Once the desired tension is achieved, hold the handlebar and base of the chainsaw securely. Turn the chain tension knob clockwise to tighten it again, securing the chain in place.

5. Double-Check the Chain Tension

Recheck the chain tension as described in step 3 to ensure it has not changed during the tightening process.

6. Tighten the Sprocket Cover Nut Fully

Use the wrench to fully tighten the sprocket cover nut, holding the chainsaw securely.

7. Lubricate the Chain

Apply a small amount of chain lubricant to the chain to keep it properly lubricated and extend its lifespan. Recommended lubrication intervals vary depending on the chainsaw model and usage conditions. Consult the manufacturer’s instructions for specific recommendations.

Check the Chain Tension

Proper chain tension is crucial for the safe and efficient operation of your chainsaw. Follow these steps to check and adjust the chain tension:

Place the chainsaw on a flat surface. Ensure the chain brake is engaged.
Pull the chain upward in the middle of the guide bar. It should move approximately 3/16″ to 1/4″.
Adjust the chain tension if necessary. Use the tensioning screw located on the side of the chainsaw. Turning the screw clockwise will tighten the chain, while turning it counterclockwise will loosen it.
Re-check the chain tension. Repeat steps 2 and 3 to ensure the chain is at the optimal tension.
Hold the tip of the guide bar on the ground. The bottom of the chain should clear the ground by approximately 1/4″.
Tighten the chain tensioning knob. This will lock the chain in place.
Pull the chain again. The chain should now be at the correct tension.
Lubricate the chain. Use a bar and chain oil to lubricate the chain and guide bar. This will reduce friction and extend the life of the chain.

Table: Chain Tension Measurement

Chain Movement	Tension
Less than 3/16″	Too tight
More than 1/4″	Too loose

Secure the Chain Cover

Once the chain is placed on the bar, it’s time to secure the chain cover. This will help keep the chain in place and prevent it from coming off while you’re using the chainsaw. Here’s how to do it:

Place the chain cover over the chain and bar.
Align the holes in the chain cover with the holes in the bar.
Insert the bolts through the holes and tighten them using a wrench.
Make sure the chain cover is securely fastened.

Here are some additional tips for securing the chain cover:

Use the correct size bolts for the chain cover.
Tighten the bolts evenly to prevent the chain cover from warping.
Inspect the chain cover regularly for damage and replace it if necessary.

By following these steps, you can safely and securely attach the chain cover to your chainsaw.

Start the Chainsaw to Test the Chain

Once the chain is installed, it’s time to test it out. Follow these steps carefully:

10. Safety Precautions

Before starting the chainsaw, always ensure your surroundings are clear of any obstacles or people. Wear appropriate safety gear, including eye protection, earplugs, gloves, and sturdy boots. Make sure the chainsaw is on a stable surface and that you have a firm grip before starting it.

11. Start the Chainsaw

Locate the starter cord and pull it sharply to start the chainsaw. If the chainsaw does not start right away, repeat the process. Once the engine is running, allow it to idle for a few minutes to warm up.

12. Test the Chain

Slowly engage the chainsaw’s blade by squeezing the throttle trigger. Observe the chain’s movement and listen for any unusual noises or vibrations. If everything appears to be functioning smoothly, you can proceed to use the chainsaw as needed.

| Step | Action |
|—|—|
| 1 | Ensure safety precautions |
| 2 | Locate the starter cord |
| 3 | Pull the starter cord sharply |
| 4 | Allow the engine to warm up |
| 5 | Squeeze the throttle trigger |
| 6 | Observe the chain’s movement and listen for any abnormalities |