When does Stihl recommend swapping out fuel for our chainsaws?

When does Stihl recommend swapping out fuel for our chainsaws?

• A. Every 2 weeks
• B. Every 3 months
• C. Every 6 months
• D. Never

Answer: (B)

Fuel doesn’t stay fresh forever. Gasoline with ethanol can absorb moisture and the additives break down over time, leading to gum and varnish forming in the fuel system and carburetor. Replacing the fuel on a roughly three‑month cycle helps keep the mixture fresh and reduces the risk of deposits that can make starting hard or running poorly. If you can’t run the saw regularly, you can use a fuel stabilizer and plan to refresh the fuel every few months, or drain the tank and run the engine dry for storage. This approach minimizes fuel-related performance problems and supports reliable operation.

Fuel doesn’t stay fresh forever. Gasoline with ethanol can absorb moisture and the additives break down over time, leading to gum and varnish forming in the fuel system and carburetor. Replacing the fuel on a roughly three‑month cycle helps keep the mixture fresh and reduces the risk of deposits that can make starting hard or running poorly. If you can’t run the saw regularly, you can use a fuel stabilizer and plan to refresh the fuel every few months, or drain the tank and run the engine dry for storage. This approach minimizes fuel-related performance problems and supports reliable operation.