Stihl FC 55 Instruction Manual
![Stihl FC 55 manual cover](/images/373fb8cd76bcfd436da3ceb4/thumbs/thumb175x175.webp)
To start the Stihl FC 55, first ensure the unit is on a flat surface. Set the choke lever to the cold start position, press the fuel pump bulb at least five times, and pull the starter rope until the engine fires. After it fires, move the choke to the run position and pull again to start.
The Stihl FC 55 requires a 50:1 ratio of gasoline to 2-stroke engine oil. Use high-quality 89 octane or higher gasoline mixed with Stihl two-stroke engine oil.
To replace the blade on the FC 55, first ensure the engine is off and the spark plug wire is disconnected. Use a wrench to remove the blade bolt, then take off the old blade. Install the new blade, ensuring it is properly aligned, and tighten the bolt securely.
If the engine won't start, check the fuel tank for fuel, ensure the spark plug is clean and properly gapped, and verify the air filter is clean. Additionally, make sure the choke is set correctly and the fuel is fresh.
The air filter should be checked before each use. Clean it if it appears dirty, and replace it if it is damaged or excessively dirty. Regular maintenance will ensure optimal performance.
No, it is essential to use a high-quality 2-stroke engine oil, such as Stihl's own brand, to ensure proper lubrication and performance. Using other types of oil can damage the engine.
To store the FC 55 for the winter, drain the fuel tank and run the engine until it stops to clear the carburetor. Clean the unit thoroughly and store it in a dry, secure place. Consider removing the spark plug and adding a few drops of oil into the cylinder for protection.
Adjusting the carburetor should be done carefully. Locate the adjustment screws on the carburetor, and with the engine off, turn the screws to set the idle speed and mixture. Start the engine and make fine adjustments as needed, following the manual's instructions.
Excessive vibration can be caused by a damaged or unbalanced blade. Inspect the blade for damage and replace if necessary. Check the entire unit for loose screws or components, and ensure everything is securely fastened.
Regular maintenance is key to optimal performance. Keep the air filter, spark plug, and fuel system clean, use the correct fuel mix, and ensure the blade is sharp and properly installed. Adhere to the recommended service intervals in the user manual.