Refer to the troubleshooting guide below for common issues and solutions:
| Component | Every Use | 10 hours | 50 hours | |-----------|-----------|----------|----------| | Air filter | Check/clean | Replace if dirty | - | | Spark plug | Check gap (0.5mm / 0.020”) | - | Replace | | Fuel filter | - | Check | Replace | | Cutting head/blade | Inspect for damage | - | - | | Gearbox grease | - | - | Add grease (Stihl special lubricant) | | Cooling fins | Clean debris | Clean thoroughly | - | stihl fs96 manual