Stihl FC 83 Instruction Manual
![Stihl FC 83 manual cover](/images/13b03933736c98c84a0c82ae/thumbs/thumb175x175.webp)
To start the Stihl FC 83, ensure the fuel tank is filled, set the choke to the closed position, press the fuel pump bulb at least 5 times, set the throttle to the start position, and pull the starter cord until the engine fires. Once it fires, open the choke and pull the starter again to start the engine.
Use a high-quality 89 octane unleaded gasoline mixed with a 2-cycle engine oil at a 50:1 ratio. Stihl recommends using their own brand of 2-cycle engine oil for optimal performance and longevity.
Check the air filter after every 10 hours of operation. Clean it with warm, soapy water and let it dry completely before reinstalling. Replace the air filter annually or whenever it shows signs of wear or damage.
Ensure the fuel is fresh and properly mixed. Check the spark plug for wear or fouling, and replace it if necessary. Make sure the air filter is clean, and inspect the fuel lines for blockages or leaks. If the problem persists, consult a Stihl technician.
To adjust the cutting depth, loosen the wing nut on the depth wheel, move the wheel to the desired height, and then tighten the wing nut securely. Ensure the adjustment is made with the engine off and the blade not rotating.
Perform a visual inspection of the unit before each use. Clean the air filter every 10 hours of operation, replace the spark plug annually, and inspect the fuel filter and fuel lines monthly. Regularly check and tighten all screws and nuts.
Avoid using the edger in areas with gravel or rocks, which can dull the blade. Regularly inspect the blade for sharpness and damage, and sharpen or replace it as needed. Properly store the edger to prevent moisture damage.
Signs that the spark plug needs replacing include difficulty starting the engine, rough idling, poor acceleration, and increased fuel consumption. Inspect the spark plug for carbon buildup or electrode wear and replace it if necessary.
Clean the unit thoroughly, empty the fuel tank, and run the engine until it stops to clear the carburetor of fuel. Remove and clean the air filter, and store the edger in a dry, dust-free environment. Consider using a storage cover to protect it from dust and debris.
Excessive vibration can be caused by an unbalanced or damaged blade, loose screws or nuts, or worn-out engine mounts. Inspect the blade for damage and balance, tighten any loose fasteners, and replace worn engine mounts. If the issue persists, consult a professional technician.