Stihl FC 90 Product Instruction Manual - Page 31

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 Pickup body in fuel tank Clean Replace Have checked by dealer1) Have replaced by dealer1) Fuel tank Clean Carburetor Check idle adjustment - the blade must not turn X X Readjust idle Spark plug Readjust electrode gap Replace after every 100 operating hours Visual inspection X Cooling inlets Clean Valve clearance Check and, if necessary, have adjusted by dealer after first 139 hours of operation1) Combustion chamber Decoke after first 139 hours of operation, then every 150 hours of operation Check X Spark arresting screen in muffler Clean or replace All accessible screws and nuts (not adjusting screws) Retighten Anti-vibration elements (rubber buffers, Check X springs) Have replaced by dealer1) FC 90 before starting work after finishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged if required English X X X X X X X X X X X X X X X X X X X X 29