Stihl FS 75 Instruction Manual
![Stihl FS 75 manual cover](/images/a4371a1e2cd764d138dcdd29/thumbs/thumb175x175.webp)
To start the Stihl FS 75, ensure the machine is on a flat surface. Set the choke lever to the closed position, press the fuel pump bulb several times until fuel is visible, and switch the ignition to "on". Pull the starter cord until the engine fires, then move the choke to open and pull again to start.
The Stihl FS 75 requires a fuel mix of 50:1 ratio of gasoline to 2-stroke engine oil. Use unleaded gasoline with a minimum octane rating of 89 and Stihl's 2-stroke engine oil for optimal performance.
If the Stihl FS 75 won't start, check the fuel mix, ensure the spark plug is clean and functional, and verify that the air filter is not clogged. Additionally, inspect the fuel line for blockages and confirm the ignition switch is set to "on".
The air filter should be checked and cleaned after every 10 hours of use. If operating in dusty conditions, more frequent maintenance may be necessary. Use warm soapy water to clean and allow it to dry completely before reinstalling.
After each use, clean the exterior of the FS 75, inspect the cutting attachment for damage, check the air filter, and ensure the fuel tank is not leaking. Also, visually inspect the entire tool for loose screws or damaged parts.
To replace the trimmer line, first remove the spool from the trimmer head. Cut a length of line approximately 25 feet long, and wind it evenly onto the spool. Insert the line ends through the eyelets, reattach the spool, and ensure it is securely fastened.
Excessive vibration can be due to a damaged or unbalanced cutting attachment, loose parts, or misalignment. Inspect the cutting attachment for damage, ensure all screws and nuts are tight, and check the drive shaft for alignment issues.
Yes, the Stihl FS 75 is compatible with various cutting attachments including metal blades and polycut heads. Always ensure the attachment is suitable for the FS 75 and follow the manufacturer's installation guidelines.
If the engine overheats, stop using the trimmer immediately. Check for blockages in the cooling fins and air intake, ensure the fuel mixture is correct, and inspect for any exhaust obstructions. Allow the engine to cool before restarting.
For off-season storage, clean the trimmer thoroughly, empty the fuel tank, and run the engine until it stops to clear the carburetor. Store in a dry, cool place, and cover to protect from dust and moisture.