Measuring the bar length of a chainsaw is an important step in maintaining and replacing parts of your chainsaw. Below is a step-by-step guide to help you accurately measure the bar length.
Preparation
Before you start measuring the bar, ensure safety by doing the following:
– Disable the Chainsaw: Make sure the chainsaw is turned off and completely cool.
– Engage the Chain Brake: Engage the chain brake to prevent the chain from moving.
– Wear Safety Gear: Put on gloves to protect your hands from the sharp chain.
Locate Starting Point
The starting point for measuring the bar length is where the bar exits the chainsaw’s body:
– Find the Point: Look at where the bar comes out of the chainsaw’s casing; this is typically at the base, or the “heel” of the guide bar.
Measure the Bar Length
Now you’re ready to measure the bar length:
1. Stretch a Tape Measure: Lay a tape measure from the starting point (the heel of the bar) straight down the length of the bar to the tip of the bar (also known as the “nose”).
2. Measure to the Tip: Measure from the starting point to the furthest point out on the bar which is usually at the very end of the tip.
3. Round Up: Chainsaw bar lengths are typically sold in even-inch lengths. If your measurement is not an even number (for example, 16.5 inches), round it up to the nearest even number (in this case, 17 inches). Manufacturers generally round up the bar measurement, so a bar that measures 16.5 inches is typically called a 16-inch bar.
Understanding Bar Measurement
Manufacturers often refer to the bar length in two ways:
– Effective Cutting Length: This is the actual usable length of the saw blade from its tip to the point where it enters the housing of the chainsaw, which gives the effective cutting area.
– Overall Length: Sometimes, the overall length from tip to the end of the bar is also provided, but it’s not the standard for replacement parts.
Make sure when purchasing a replacement bar or chain that you use the effective cutting length for compatibility.
Tips for Accuracy
When measuring the bar:
– Ensure the tape measure is straight and not bent, as this could lead to an incorrect measurement.
– Take note of other dimensions such as the bar groove size and the pitch of the chain since these are also important when fitting new chains to a chainsaw.
– If possible, reference the chainsaw’s model number or existing bar and chain size as additional confirmation when purchasing replacements.
Conclusion
By following these steps, you can accurately measure your chainsaw’s bar length and ensure that you purchase the correct size of replacement parts. Always keep safety in mind, and refer to your chainsaw’s manual for specific details related to your model.