Stihl FS 550 Instruction Manual - Page 38

Maintenance Chart Please note that the following maintenance intervals apply for normal operating conditions. If your daily working time is longer than normal or cutting conditions are difficult (very dusty work area etc.), shorten the specified intervals accordingly. Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air filter Clean Replace Pick up body in fuel tank Check Replace Fuel tank Clean Carburetor Check idle adjustment - cutting tool must not turn X X Readjust idle Spark plug Readjust electrode gap Replace after 100 hours of operation Inspect X Cooling inlets Clean Spark arresting screen* in muffler Inspect Replace All accessible screws and nuts (not adjusting screws) Retighten Anti-vibration element Check X Have replaced by servicing dealer 1) Visual inspection X X Cutting tools Replace Check tightness of cutting tool X X Metal cutting tools Sharpen X Safety labels Replace 1) STIHL recommends a STIHL servicing dealer * see "Guide to Using this Manual" FS 500, FS 550 before starting work after finishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required English / USA X X X X X X X X X X X X X X X X X X X X X X 37