Avoiding Fuel-Related Problems

Your Honda lawn mower is designed and manufactured to precise specifications to ensure years of troublefree operation. This includes the fuel system. However, the properties of gasoline can quickly lead to stale fuel causing starting or running problems and, in some cases, damage to the fuel system if precautions are not followed. The good news is most fuel-related problems can be avoided by following a few simple steps. The steps shown below are also recommended for Honda-powered lawn mowers.

Follow These Five Steps to Prevent Most Fuel-Related Problems

Step 1 Do not use gasoline containing more than 10% ethanol in your Honda lawn mower.

Reason Gasoline containing higher levels of ethanol is corrosive and attracts water, which can cause starting or running problems or, in some cases, damage to your lawn mower’s fuel system.

Step 2 Store your gasoline in a clean, plastic, sealed container approved for fuel storage. Close the vent (if equipped) when not in use and store the container away from direct sunlight. If it takes more than 3 months to consume the fuel in the container, we suggest adding a fuel stabilizer to the fuel when you fill the container.

Reason A clean, plastic container approved for fuel storage will help prevent rust and metallic contaminants from entering the fuel system. Gasoline will deteriorate faster when exposed to air and sunlight.

Step 3 Keep your lawn mower’s air filter properly serviced. Check it before each use.

Reason A properly maintained air filter will help prevent dirt from entering your lawn mower’s carburetor. Check the filter before each use. Replace it often when used in dusty conditions. Dirt entering the carburetor can be drawn into small passages in the carburetor and premature engine wear. These small passages can become blocked, causing starting or running problems. Always use a Honda Genuine air filter to ensure the air filter seals and performs as designed.

Step 4 When you’re finished mowing, turn the fuel valve OFF and leave it OFF until you’re ready to mow again. Fill the fuel tank to minimize air in the tank. If you do not intend to use your mower for 3 to 4 weeks, start the engine with the fuel valve OFF, and allow it to run until the engine runs out of gas.

Reason The small amount of gasoline in your lawn mower’s carburetor will deteriorate faster than the fuel in the fuel tank due to its small volume and proximity to residual engine heat. The fuel valve allows you to stop the fuel flow from the fuel tank to the carburetor for storing and transporting. Filling the fuel tank after each use (instead of before each use). If the fuel tank is partially filled, air in the tank will promote fuel deterioration.

Step 5 If you don’t plan to use your lawn mower for more than 30 days, follow the storage guidelines on the following page.

Reason Untreated gasoline (without a fuel stabilizer) left in the lawn mower’s fuel system will deteriorate, causing starting or running problems and, in some cases, damage to the fuel system.

Refer to your lawn mower’s Owner’s Manual for additional information.