Stihl FH 75 Instruction Manual
![Stihl FH 75 manual cover](/images/856aa11f41a1e0d107776868/thumbs/thumb175x175.webp)
To start the Stihl FH 75, ensure the choke is engaged, press the primer bulb several times, set the ignition switch to "on," and pull the starter cord firmly. Once the engine starts, gradually move the choke to the run position.
The recommended fuel mixture for the Stihl FH 75 is a 50:1 ratio of gasoline to 2-stroke engine oil. Use only high-quality, unleaded gasoline and Stihl's 2-stroke engine oil for optimal performance.
Regularly clean the blades with a soft cloth and apply a light coat of oil to prevent rust. Sharpen the blades as needed using a sharpening file or have them professionally sharpened to ensure optimal cutting performance.
Check the fuel mixture, ensure the spark plug is clean and properly gapped, verify the air filter is clean, and confirm the choke is in the correct position. If the problem persists, consult a Stihl service technician.
Inspect the air filter regularly and clean it as needed. Replace the air filter every 100 hours of operation or annually, whichever comes first, to maintain optimal engine performance.
Stihl recommends using gasoline with no more than 10% ethanol content. Higher ethanol content can cause engine damage and may void the warranty. Use fresh, high-quality fuel to ensure reliable operation.
To adjust the carburetor, locate the adjustment screws marked "L," "H," and "LA." Use a screwdriver to turn these screws slightly to adjust the low-speed, high-speed, and idle settings as needed. Refer to the user manual for specific adjustment procedures.
Drain the fuel tank, remove the spark plug, and add a few drops of oil into the cylinder. Pull the starter cord several times to distribute the oil, then replace the spark plug. Store the unit in a dry, cool place away from direct sunlight.
Ensure the anti-vibration system is in good condition and the blades are sharp and balanced. Hold the tool firmly but not too tightly, and take regular breaks to minimize the effects of vibration.
Check that the air vents are clear of debris, the fuel mixture is correct, and the cooling fins are clean. If overheating persists, stop using the tool and have it inspected by a qualified technician.