How to mix fuel for grass trimmers and brushcutters

Proper fuel mixing is essential for the performance and longevity of your Husqvarna grass trimmer or brushcutter.

Using the correct fuel-to-oil ratio not only keeps your machine running smoothly but also prevents costly engine damage.

In this guide, we’ll walk you through the right way to mix and handle fuel safely.

Safety first

• Do not smoke or place hot objects near fuel.
• Always switch off the engine before refuelling.
• Let the engine cool down for a few minutes before adding fuel.
• Mix and pour fuel outdoors, away from sparks and flames.
• Open the fuel cap slowly to release pressure safely.
• Tighten the fuel cap securely after refuelling.
• Move the product away from the refuelling area before starting the engine.

Step-by-step: How to mix fuel correctly

1. Use a clean fuel container. Always choose one designed for fuel storage.
2. Start with half the fuel. Fill the container halfway with unleaded fuel.
3. Add the oil. Pour in the recommended two-stroke oil.
4. Mix the fuel. Shake or swirl to blend the fuel and oil thoroughly.
5. Add the remaining fuel. Fill up the rest of the container and mix again.
6. Check the ratio. Use the manufacturer’s specific ratio—usually 50:1 (2 % oil mix).
7. Use only fresh fuel. Don’t mix more than a month’s supply at a time.

Recommended fuel mix ratio

For Husqvarna grass trimmers and brushcutters, the correct fuel mix ratio is:

50:1 (2 %) = 5 litres of fuel + 0.1 litres (100 ml) of two-stroke oil

We recommend using Husqvarna oil mixtures for the best performance and engine protection.

Pro tips for best results

• Always mix fuel in a ventilated outdoor area.
• Mix thoroughly before filling the product’s tank.
• Store leftover mixture in an approved fuel container, away from direct sunlight.
• Never use old or stale fuel—it can damage the engine.