Mixing the correct fuel for your Husqvarna chainsaw is crucial for its performance and longevity. The precise ratio of gasoline to two-stroke oil ensures the engine is properly lubricated.
Understanding the Correct Fuel Mix
According to Husqvarna information, the correct mixing ratio for your specific product is detailed in your chainsaw's owner's manual. Always refer to your manual for the most accurate information tailored to your model.
However, as a general guide, a fuel-to-oil ratio of 50:1 is recommended for Husqvarna products up to and including 75cc. This is a common standard for many two-stroke outdoor power equipment engines.
The 50:1 Ratio Explained
A 50:1 ratio means you mix 50 parts unleaded gasoline with 1 part two-stroke engine oil.
Based on the general guide provided, this 50:1 ratio comes out to 2.5 fluid ounces of oil per 1 gallon of gas.
Here's a simple breakdown of common volumes using the 50:1 ratio:
| Gasoline Volume | 2-Stroke Oil (50:1) |
|---|---|
| 1 Gallon | 2.5 fl oz |
| 2 Gallons | 5.0 fl oz |
| 2.5 Gallons | 6.4 fl oz |
| 5 Liters | 100 ml |
Note: Always use measuring containers specifically designed for fuel mixing to ensure accuracy.
Steps for Mixing Fuel
Mixing fuel correctly is a straightforward process:
- Gather Supplies: You will need fresh, unleaded gasoline (typically 89 octane or higher, follow manual recommendations), high-quality two-stroke engine oil designed for air-cooled engines (like Husqvarna's own brand or a quality equivalent meeting ISO EGD or JASO FD standards), and an approved fuel container with volume markings.
- Determine the Ratio: Check your owner's manual first. If not readily available, use the general 50:1 ratio for models up to 75cc, which is 2.5 fl oz of oil per gallon of gas.
- Measure Accurately: Measure the required amount of two-stroke oil using a dedicated measuring cup or the markings on the oil bottle designed for mixing.
- Add Oil to Gas: Pour the measured oil into the fuel container before adding the gasoline. This helps the oil mix more effectively as the gas is added.
- Add Gasoline: Carefully pour the correct amount of fresh unleaded gasoline into the container.
- Mix: Securely close the container and gently shake it to ensure the oil and gasoline are thoroughly mixed.
Important Tips for Fuel Mixing
- Use Fresh Fuel: Always use gasoline that is fresh, preferably less than 30 days old. Stale fuel can cause starting and running problems.
- Use Quality Oil: Do not use automotive engine oil (like 4-stroke oil) or marine two-stroke oil. Use only high-quality two-stroke oil specifically designed for air-cooled engines like those found in chainsaws.
- Avoid Ethanol: Gasoline containing high levels of ethanol (e.g., E15 or E85) can damage engine components. Use gasoline with no more than 10% ethanol (E10) or, ideally, ethanol-free gasoline if available.
- Mix Small Batches: Only mix the amount of fuel you expect to use within 30 days. Mixed fuel degrades over time.
- Proper Storage: Store mixed fuel in an approved, airtight fuel container in a cool, dry place away from ignition sources.
Always prioritize the information in your specific Husqvarna chainsaw's owner's manual for the most accurate and recommended fuel mixture for your model.
