How much oil do you put in a troy bilt 4 cycle weedeater?

For a Troy-Bilt 4-cycle weed eater, you typically use a 40:1 gas-to-oil ratio, which means you don't need to mix oil with gasoline. Instead, you should check the owner's manual for the specific model, as it may vary slightly. Generally, you will add oil directly to the designated oil reservoir, usually around 2.6 ounces of 4-cycle engine oil for the initial fill. Always ensure to use the recommended type of oil for optimal performance.