Chainsaw Fitting & Filing Guide

Chainsaw Fitting & Filing Guide

Chainsaw chains require proper fitting and maintenance to ensure optimal performance and safety. Whether you are a seasoned professional or just starting out, understanding the basics of chainsaw fitting and maintenance is essential. In this guide, we will walk you through the key steps to keeping your chainsaw in top condition.

Why is Proper Chainsaw Fitting Important?

Proper chainsaw fitting is crucial for both performance and safety. A well-fitted chain ensures efficient cutting and reduces the risk of kickback, which is one of the leading causes of chainsaw related accidents. A loose chain can also damage the chainsaw, resulting in costly repairs.

By following the manufacturer's guidelines, you can maximise the lifespan of your chainsaw and minimise the risk of accidents. Check out our free downloadable chain guide for ensuring you are using the correct guidelines for your chainsaw, to print out and keep on-hand.

CHAIN FITTING

How to Fit a Chainsaw Chain

When fitting a chainsaw chain, it is important to ensure that it is the correct size for your chainsaw model. Ensure you disconnect the spark plug to prevent any accidents.

  1. Start by removing the chain sprocket cover.
  2. Unscrew the tensioner and the chain spool cover with a screwdriver and a wing nut respectively.
  3. Locate the tensioner towards the end of the chainsaw bar and turn the wheel.
  4. Finally, place the chainsaw chain rail on the guide rail.
  5. Now you can take out the old chain, and place the new one in. Ensure the teeth are facing the correct direction, and insert it into the guide rail bar. Place the protective cover back onto the chainsaw. 
  6. Finally, check the tension by pulling the chain at the bottom of the guide bar - it should move freely without sagging. Make adjustments to the tension as necessary by rotating the tension screws. 

For further guidance, read our comprehensive step-by-step guide to putting a chain on your chainsaw. 

Rotatech Chainsaw Chain

Chainsaw Maintenance and Safety Tips

Regular maintenance is key to keeping your chainsaw at peak performance. Here are some essential maintenance tips to follow:

  • Keep your chain sharp by using a chainsaw file, preventing kickback and chainsaw damage. Check out our useful chain sharpening guide here.
  • Clean the air filter regularly to prevent dust and debris from clogging the engine.
  • Inspect the guide bar for any signs of wear or damage and replace as needed.
  • Use specialist chain oil to keep your chain lubricated, reduce friction and prevent wear and tear.
  • Wear the appropriate work gear including thick, PPE gloves to keep yourself safe.

chainsaw change oil

How Often Should You Sharpen a Chainsaw Chain?

The general rule of thumb is, sharpen every time you refuel, or after every few hours of cutting, but it depends on how and what you're cutting.

Here’s a quick breakdown:

Cutting Situation Sharpening Frequency
Clean, softwood logs Every 3–5 hours
Dirty or frozen wood After every session
Hitting soil, nails, or grit Sharpen immediately
Chains producing dust instead of chips Sharpen now!


Rotatech chainsaw bar

When to Seek Expert Guidance

While basic chainsaw maintenance can be done at home, there are certain tasks that are best left to professionals. If you encounter any issues with your chainsaw that you are not comfortable fixing yourself, it is best to seek the help of a certified technician. This will ensure that your chainsaw is repaired correctly and maintained for optimal performance.

By following these tips for chainsaw fitting and maintenance, you can ensure that you get the most out of your chainsaw. Remember, safety should always be your top priority when using a chainsaw, so always follow the manufacturer's guidelines and use PPE.

arborist

Chainsaw Chain Identification Charts

Full Chisel Chains – Cross Reference

Pitch Gauge Rotatech Chain Carlton McCulloch Stihl Windsor Husqvarna EM Dolmar Tri-Link
0.325″ 0.050″ (1.3mm) B1SFT (Full Chisel) K1C, K1L PM320, SPR320 23 50J H22, H23 82 2B, 7B
0.325″ 0.058″ (1.5mm) B2SFT (Full Chisel) K2 SPR328 25 58J H25, H21, H38 S212 083, 686 2C, 7C
0.325″ 0.063″ (1.6mm) B3SFT (Full Chisel) K3 26 63J H28, H26 S28 2D, 7D
3/8″ 0.050″ (1.3mm) C1SFT (Full Chisel) A1 PM370, SPR370 33R 50A H51, H47, H46, H80, H82 S46 100 3B, 8B
3/8″ 0.058″ (1.5mm) C2SFT (Full Chisel) A2 SPR378 35R 58A H42, H48, H49, H52, H54, H81 S48, S49, S52 99 3C, 8C
3/8″ 0.063″ (1.6mm) C3SFT (Full Chisel) A3 PM373, SPR373 36R, 33R 63A H44, H45, H53, H50, H83 S45, S53 110 3D, 8D
.404″ 0.063″ (1.6mm) D3SFT (Full Chisel) B3S PM403, SPR403 46RS 63B H57, H64, H65 S64, S65 103, 108 4D


Semi Chisel Chains - Cross Reference

Pitch Gauge Rotatech Chain Carlton McCulloch Stihl Windsor Husqvarna EM Dolmar Tri-Link
1/4″ 0.043″ (1.1mm) E0 PM3
1/4″ 0.050″ (1.3mm) E1 (Semi Chisel) E1, K1NK 13RM 50K H00 S00
0.325″ 0.050″ (1.3mm) B1FT (Semi Chisel) H30, H37 S30
0.325″ 0.058″ (1.5mm) B2FT (Semi Chisel) K2 SPR328 25 58J H25, H21, H38 S212 083, 686 2C, 7C
0.325″ 0.063″ (1.6mm) B3FT (Semi Chisel) K3 26 63J H28, H26 S28 2D, 7D
3/8″ 0.050″ (1.3mm) C1FT (Semi Chisel) A1 PM370, SPR370 33R 50A H51, H47, H46, H80, H82 S46 100 3B, 8B
3/8″ 0.058″ (1.5mm) C2FT (Semi Chisel) A2 SPR378 35R 58A H42, H48, H49, H52, H54, H81 S48, S49, S52 99 3C, 8C
3/8″ 0.063″ (1.6mm) C3FT (Semi Chisel) A3 PM373, SPR373 36R, 33R 63A H44, H45, H53, H50, H83 S45, S53 110 3D, 8D
3/8″ 0.043″ (1.1mm) A0 (Semi Chisel) N4 61PMN 43RG 1A
3/8″ 0.050″ (1.3mm) A1 (Semi Chisel) N1 M370 63PM 50R H35, H36 S36 92 1B
.404″ 0.063″ (1.6mm) D3FT (Semi Chisel) B3S PM403, SPR403 46RS 63B H57, H64, H65 S64, S65 103, 108 4D


Recommended Tools

Keeping your chain in top condition doesn’t have to be complicated. At Rotatech, we stock all the essential tools you need to make chain maintenance quick, simple, and safe. Here are the products we recommend:

  • Files: Keeping your cutters sharp is essential for safe, efficient cutting. A good-quality file lets you quickly restore the edge on each tooth, reducing strain on your saw and improving performance.

  • File Kit: A complete kit gives you everything you need for accurate sharpening, including the correct file sizes, guides and handles. It helps you maintain the correct angles, making sharpening faster and more consistent.

  • Rotatech Chainsaw Tensioning Tool: Correct chain tension is crucial for safety and cutting accuracy. This tool allows you to adjust the chain quickly and precisely on the go, preventing premature wear and reducing the risk of derailment.

  • 2-Stroke Oil: Using a high-quality, correctly blended 2-stroke oil keeps your chainsaw engine running smoothly. It ensures proper lubrication, reduces carbon build-up and helps extend engine life.

  • Chainsaw Oil: Bar and chain oil keeps the chain running smoothly along the guide bar, reducing friction and heat. This prevents unnecessary wear, improves cutting performance, and helps your chain last longer.

  • Rotatech Chainsaw Gloves: Good grip and protection are essential when maintaining or sharpening your chain. Rotatech gloves offer enhanced dexterity and safety, helping you work confidently while reducing the risk of cuts or slips.

gloves chainsaw

For more expert guidance, visit the Rotatech blog or get in touch.