Stihl KM 85 Instruction Manual
![Stihl KM 85 manual cover](/images/deb66fecdc9db9df126ed7fd/thumbs/thumb175x175.webp)
To start the Stihl KM 85 engine, ensure the ignition switch is on, set the choke lever to the cold start position, and pull the starter rope until the engine fires. Then, move the choke to the run position and pull the starter rope again until the engine runs smoothly.
The Stihl KM 85 requires a 50:1 ratio of gasoline to 2-stroke engine oil. Use high-quality 89 octane unleaded gasoline and Stihl's 2-stroke engine oil for optimal performance.
If the Stihl KM 85 won't start, check the fuel level and quality, inspect the spark plug for damage or fouling, ensure the air filter is clean, and verify that the choke is set correctly. If the problem persists, consult the user manual or a professional technician.
Regular maintenance for the Stihl KM 85 includes cleaning or replacing the air filter, checking and replacing the spark plug, inspecting the fuel system, and lubricating moving parts. Refer to the user manual for detailed maintenance intervals and procedures.
To change attachments on the Stihl KM 85, turn off the engine and disconnect the spark plug cap. Use the provided tool to loosen the coupling sleeve, remove the current attachment, and insert the new one. Tighten the coupling sleeve securely before use.
Power loss in a Stihl KM 85 can be caused by a clogged air filter, dirty fuel filter, or a worn spark plug. Ensure all filters are clean, the fuel is fresh, and the spark plug is in good condition. If the issue continues, seek professional assistance.
To store the Stihl KM 85 for winter, empty the fuel tank, run the engine until it stops to clear the carburetor, clean the machine thoroughly, and store it in a dry, well-ventilated area. Cover the unit to protect it from dust and debris.
Stihl recommends using fuel with no more than 10% ethanol content for the KM 85. Higher ethanol concentrations can cause engine damage and performance issues. Always use fresh, high-quality fuel.
The spark plug in the Stihl KM 85 should be checked and cleaned every 100 hours of operation and replaced annually or as needed based on the condition. Use a Stihl-recommended spark plug for best results.
Excessive vibration in the Stihl KM 85 can be caused by loose parts or unbalanced attachments. Check that all nuts and bolts are tight and ensure attachments are properly balanced and secured. If the problem persists, consult a technician.