Stihl MM 55 Instruction Manual - Page 25

Maintenance and Care The following intervals apply to normal operating conditions only. If your daily working time is longer or operating 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 Manual fuel pump (if fitted) Check X Have repaired by servicing dealer1) Pickup body in fuel tank Check Have replaced by servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment - the working/cutting attachment must not move X X Readjust idle Spark plug Readjust electrode gap Replace after every 100 operating hours Cooling inlets Spark arrestor in muffler Visual inspection X Clean Have checked by servicing dealer1) X Have cleaned or replaced by servicing dealer1) All accessible screws and nuts (not adjusting screws) Retighten Safety labels Replace 1) STIHL recommends an authorized STIHL servicing dealer. MM 55, MM 55 C before starting work after finishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required English X X X X X X X X X X X X X X X X X X 23