Husqvarna recommends you use a 50:1 fuel mix ratio (gas to oil ratio) for all devices that use a 2-stroke engine with less than 75cc displacement and almost all the Husqvarna Gas-powered Leaf Blowers are below 75cc, therefore require a fuel mix ratio of 50:1.
The list of leaf blowers below 75cc includes – 125B, 125BVX, 150BT, 350BT, 360BT, or 570BTS and therefore they all utilize a fuel mix ratio of 50:1.
The only versions in which you might consider a different ratio are the 580BTS or 580BFS which can utilize either 50:1 or 33:1 fuel-mix ratio.
| Leaf Blower | Fuel Mix Ratio |
| 125B and 125BVx | 50:1 |
| 150BT | 50:1 |
| 350BT and 360BT | 50:1 |
| 570BTS | 50:1 |
| 580BTS and 580BFS | 33:1 or 50:1 |
What Fuel and Oil Should be Used in a Husqvarna Leaf Blower
Husqvarna leaf blower requires mixing gasoline and oil manually, and using the correct type of gasoline and oil is essential.
Premixed Fuel
Any type of premixed fuel won’t do! We recommend you use the Husqvarna alkylate premixed fuel for your leaf blower as it uses fewer harmful chemicals than regular fuel.
The advantage of using premixed fuel for your blower is harmful exhaust fumes will be minimized, maximizing the engine’s life.
Furthermore, premixed fuel will allow the engine to remain clean for longer as deposits after combustion will be low.
Gasoline
All Husqvarna leaf blowers require high-quality unleaded gasoline- gasoline without lead additives- to operate.
Your gasoline must not have an octane rating of less than 87. If your gasoline’s octane rating falls below 87, the engine’s temperature will increase, eventually causing an engine breakdown.
Obtaining gasoline with higher octane levels is advised only if you are working your Husqvarna leaf blower at high revs.
Two-stroke Oil
The Husqvarna Two-stroke oil has primarily been created for two-stroke engined Husqvarna products- and is recommended for the Husqvarna leaf blower below 75cc (which includes all the leaf blowers except 580BTS)
Alternatively, you may use high-quality synthetic oil to stimulate your engine life.
Moreover, ensure you do not use two-stroke oil for water-cooled outboard engines for your leaf blower. Also, avoid using oil meant for four-stroke engines.
What Is the Fuel Mix Ratio for 125B Husqvarna Leaf Blower?
The gasoline to oil ratio for a 125B and 125BVx Husqvarna Leaf Blower must always be 2% or in the ratio of (1:50). The following table provides some accurate measurements that you may follow.
| Gasoline is US Gallons | Two-stroke Oil in Fluid Ounce |
| 1 | 2 ½ |
| 2 ½ | 6 ½ |
| 5 | 12 ⅞ |
What Is the Fuel Mix Ratio for 150BT Husqvarna Leaf Blower?
The fuel mixing ratio for gasoline to oil is 2% (50:1). The table below will give you some accurate figures to follow.
| Gasoline in Liters | Two-stroke Oil in Liters |
| 2% (50:1) | |
| 5 | 0.10 |
| 10 | 0.20 |
| 15 | 0.30 |
| 20 | 0.40 |
| Gasoline is US Gallons | Two-stroke Oil in Fluid Ounce |
| 1 | 2 ½ |
| 2 ½ | 6 ½ |
| 5 | 12 ⅞ |
Fuel Ratio for Backpack Leaf Blowers (350BT, 360BT, 570BTS, 580BTS)
Except for the 580B series, which has a 75.6cc engine, every other backpack blower uses a 50:1 ratio. The 580B series can utilize either a 50:1 or 33:1 fuel ratio.
| Gasoline (Gallons) | TWO-STROKE OIL (Ounce) | |
|---|---|---|
| 50:1 or 2.00% | 33:1 or 3.03% | |
| 1 | 2.5 | 3.87 |
| 2.5 | 6.5 | 9.7 |
| 5 | 12.8 | 19.4 |
How To Mix the Oil and Fuel in a Husqvarna Leaf Blower?
Mixing the gasoline with oil must be done with utmost caution because even minor inaccuracies can create an imperfect mixture ratio which will drastically affect the performance of the leaf blower.
We have created a step-by-step guide for you to learn the safest way to create a fuel mix ratio and deposit it into the fuel tank.
Creating the Fuel Mix
- Measure the gasoline amount needed for the mixture.
- Pour half of the gasoline amount into a clean container.
- Measure out and add the entire quantity of oil into the same container.
- Securely shut the container and give the mixture a good shake.
- Pour in the other half of the gasoline quantity.
- Shut the container and give it another thorough shake.
- Ensure you do not use this fuel mix for more than a month.
Filling the Fuel Tank
- Shut the engine off and allow it to cool down fully.
- Wipe down the area surrounding the fuel tank cap.
- Give the fuel container another firm shake.
- Carefully remove the fuel tank cap to allow pressure to release.
- Pour in a small amount of the fuel mixture. Be careful not to overfill it because fuel expands when it is hot and requires adequate space.
- Secure the fuel lid back onto the leaf blower.
- Diligently wipe away fuel spillages on or around the Husqvarna leaf blower.
- Move 3m or 10 ft away from the refueling station before starting the engine.
How to Store Fuel in the Short and Long Term?
Fuel leakages or fumes can lead to serious, life-threatening accidents if they come in contact with sparks or open flames, for example, from electrical devices.
This is why immense care must be taken when handling fuel, and approved fuel containers must be used to store and transport the fuel mixture in the short term.
Furthermore, if you do not intend to use the Husqvarna leaf blower for 30 days, remember to empty the fuel tank at a nearby gas station.
Precautionary Measures To Follow When Handling Fuel Mixtures
Fire accidents can occur because of minor mistakes! By reading the following list carefully, you will know all the dos and don’ts of fuel handling.
- Do not start the Husqvarna leaf blower if you spot a fuel stain on the device or yourself.
- Do not create fuel mixtures indoors or near a heat source.
- Examine your Husqvarna device for fuel leaks regularly; if you identify one, do not start the leaf blower.
- Never breathe in fuel flames and ensure there is adequate airflow.
- Do not place the Husqvarna machine or fuel container near a pilot light, flame, or warm objects.
- Do not smoke near the fuel container.
