The required fuel mixture for the McCulloch Power Mac 320 chainsaw is:
- Gasoline (petrol): Unleaded gasoline with an octane rating of 89 (mid-grade) or higher.
- 2 Stroke Engine Oil: 40:1 ratio of unleaded gasoline to two-stroke engine oil (e.g., mix 1-gallon gasoline with 3.2oz of 2 stroke engine oil)
Additional Considerations:
- For best performance and engine longevity, always use fresh fuel. Old or stale fuel can clog the carburetor and cause issues.
- If you plan on storing the chainsaw for an extended period, empty the fuel tank and carburetor and run the engine until it's out of fuel to avoid any residual buildup.
- If using gas with 10% of Ethanol content use a mix ratio of 32:1 to prevent potential lubrication related failures
- To mix fuel and oil properly, use a mixing container and shake it thoroughly before filling up the chainsaw's fuel tank.
Please Note: The fuel mixture ratio specified above is important to ensure proper lubrication of the engine components. Using an incorrect ratio can result in engine damage.
