How To Measure a Chainsaw Bar

Are you thinking of replacing the chainsaw bar of your unit? If yes, then you most definitely need to learn how to measure a chainsaw bar. For that, you can rely on us.

Learning the measurement of the chainsaw bar is essential when replacing one. This not only points to the tool working effectively, but it also has a lot to do with safety. Attaching a chainsaw bar that is not the right size, after all, will most likely lead to the blade falling off.

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How to Measure a Chainsaw Bar

In order for you to prevent chainsaw accidents from happening, you need to learn how to properly measure a chainsaw bar. For that, we are going to take a look at the two important factors in measuring a chainsaw bar.

Effective Length

First and foremost, keep in mind that the effective cutting length is much shorter than the actual length of the entire bar. This can also be referred to as the length of the chainsaw. For this, all you need is a tape measure.

Now, since you’re going to handle the chainsaw, make sure that you follow safety precautions. One obvious thing to do beforehand is to ensure that the chainsaw is turned off. Here’s what you should do next:

  • Take hold of the rubber boot that covers the plug. Then, remove the wire from the spark plug with a gentle but firm force until it completely pulls out. If done correctly, the chainsaw will not be turned on by accident.
  • Next, lay down the chainsaw and take out the tape measure. Put it against the ends of the body of the chainsaw, which is the part where tha bar sticks out from its casing.
  • Stretch out the tape measure up to the very end of the bar. You then have to measure the cutter tip, which is the farthest one from the top of the bar.
  • If the chain is not there, just estimate 1/2 inch farther from the bar tip. Make sure to round off the measurement to the nearest inch.

And there you have it! You now have your effective length measurement.

True Length

The true length refers to the actual length of the bar, which includes the measurement of the bar from one end to the other end. What you need in order to measure the true length is a wrench or a socket driver so that you can remove the bolts that are holding the chainsaw cover.

  • Use your tool to remove the cover and set it aside. You are now left with an exposed chainsaw bar. Do not be alarmed when it is lying loosely because that is normal.
  • Lift the bar of the interior bolts and lay it down flatly.
  • Place the end of the tape measure from one end of the bar and stretch it to the other end. Read the measurement and make sure not to round it off as, again, that is the true length of the bar.
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Do you now see how easy it is to learn how to measure a chainsaw bar? It is actually very easy; you just need a number of tools, and you are well on your way in choosing the right replacement bar.

You now know the effective length and the true length. Take note of these two measurements because these are what you will need to purchase the right replacement bar. Also keep in mind that if one or neither of these two lengths correspond to your chosen bar, it will not fit and it will effectively break down your chainsaw.

Lastly, even if you’re just out to take measurements of a chainsaw, always remember to practice safety tips when handling one! Good luck!