What Gas Oil Ratio for Husqvarna Chainsaw? Optimal Mix Guide



Gas Oil Ratio for Husqvarna Chainsaw

The gas to oil ratio for Husqvarna chainsaws is 50:1. Mix 2.6 ounces of two-stroke engine oil per one gallon of gasoline for best performance.

For Husqvarna chainsaw owners, understanding the right gas to oil ratio is crucial for the performance and longevity of your chainsaw. This expert guide will walk you through the importance of the correct fuel mixture and provide a detailed breakdown of the ratios you should be using. Whether you are a professional lumberjack or a homeowner looking after your garden, knowing this mixture is the key to keeping your chainsaw running smoothly.

Understanding the Importance of the Correct Gas Oil Ratio

Husqvarna chainsaws operate on a two-cycle (or two-stroke) engine, which requires a specific mixture of gasoline and oil to lubricate the internal components while the engine runs. Using the correct gas oil ratio is important to:

  • Prevent engine damage.
  • Maximize the efficiency of your chainsaw.
  • Minimize exhaust emissions.
  • Avoid warranty voidance.
  • Reduce the risk of engine failure or breakdowns.

The recommended gas oil ratio for most Husqvarna chainsaws is 50:1. That means 50 parts of gasoline to 1 part of two-stroke oil. However, there are variations based on model and engine type, so it’s essential to consult your specific chainsaw’s manual for the exact ratio.Add more rows as needed

Chainsaw ModelRecommended Gas Oil Ratio
Husqvarna 455 Rancher50:1
Husqvarna 43550:1
Husqvarna T43550:1

Note: Older models may require a 40:1 ratio or others, always check your manual first.

How to Mix Gas and Oil for Your Husqvarna Chainsaw

To mix your fuel properly, follow these steps:

  1. Start by determining the capacity of your gas container.
  2. Use fresh, regular unleaded gasoline with a minimum of 89 octane.
  3. Choose a quality two-stroke oil that is designed for air-cooled engines, which many Husqvarna-branded oils are.
  4. Mix the gas and oil in a clean, approved container. For example, if you have a one-gallon container, you would mix 2.6 ounces of two-stroke oil with the gasoline for a 50:1 ratio.
  5. Shake the mixture well to ensure the oil is thoroughly blended with the gas.
  6. Always mix your fuel in a well-ventilated area and store excess fuel in a cool and dry location away from any sparks or flames.

Troubleshooting Tips for Fuel Mixture Issues

If you are experiencing problems with your chainsaw, it could be related to the fuel mixture.

  • Engine won’t start: Double-check the fuel mixture ratio and ensure there aren’t any blockages in the fuel system.
  • Excessive smoke: This usually indicates that the mixture is too rich in oil. Confirm that you have a 50:1 ratio mix.
  • Poor performance or overheating: This could mean the mixture is too lean. Make sure you haven’t accidentally added too much gasoline to the mixture.

Read more: Which Way Do Teeth Go on Chainsaw


Maintaining the right gas oil ratio for your Husqvarna chainsaw is vital for its performance and durability. Remember to reference your owner’s manual for the exact ratio required for your model, and always use quality gasoline and two-stroke oil. With the proper mixture, your chainsaw will serve you well through many wood-cutting tasks.

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