Ariens Pro 21 Owners Manual - Page 24

FUEL SYSTEM Gasoline left in the fuel system for extended periods without a stabilizer will deteriorate, resulting in gum deposits in the system. These deposits can damage the carburetor and the fuel hoses, filter and tank. Prevent deposits from forming in the fuel system during storage by adding a quality fuel stabilizer to the fuel. Follow the recommended mix ratio found on the fuel stabilizer container. To treat the fuel system for storage: 1. Add fuel stabilizer according to manufacturer's instructions. 2. Run engine for at least 10 minutes after adding stabilizer to allow it to reach the carburetor. NEVER store the engine with fuel in the fuel tank inside of a building with potential sources of ignition. TROUBLESHOOTING PROBLEM Engine will not start Engine is difficult to restart Cut is poor Grass does not disperse evenly Mower does not bag clippings PROBABLE CAUSE 1. Fuel tank empty or low. 2. Fuel shutoff valve closed. 3. Spark plug wire loose or off. 4. Engine/Blade control cable detached, broken, or not adjusted properly. 1. Mower clogged with grass. 1. Worn blade. 2. Too much grass is being removed per cutting. 3. Grass is too wet. 4. Mowing speed is too fast. 5. Uneven deck. 1. Too much grass is being removed per cutting. 2. Grass is too wet. 3. Mowing speed is too fast. 1. Grass bag is overfilled. 2. Mulching plug is installed. CORRECTION 1. Check fuel level. Fill tank if necessary (see FILLING THE FUEL TANK on page 12). 2. Open fuel shutoff valve. 3. Check connection. 4. Check cable. Adjust, repair or replace as necessary. 1. Clear clippings from under mower. (Allow the mower to clear clippings before shutting off engine.) 1. Check blade (see CHECK MOWER BLADE on page 17). 2. Raise cutting height. 3. Allow grass to dry. 4. Mow slower. 5. Set level deck height. 1. Raise cutting height. 2. Allow grass to dry. 3. Mow slower. 1. Empty grass bag and do not allow it to overfill. 2. Remove mulching plug. GB - 24