Stihl KM 91 R Product Instruction Manual - Page 21

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. English before starting work after finishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required Complete machine Control handle Air filter Manual fuel pump (if fitted) Pickup body in fuel tank Fuel tank Carburetor Spark plug Cooling inlet Cylinder fins Valve clearance Spark arresting screen in muffler Visual inspection (condition, leaks) X X Clean X Replace any damaged parts X Check operation X X Visual inspection Replace1) Check X Have repaired by servicing dealer2) Have checked by servicing dealer2) Have replaced by servicing dealer2) Clean Check idle adjustment - the working/cutting attachment must not run X X Adjust idle speed Adjust electrode gap Replace after every 100 operating hours Visual inspection X Clean Have cleaned by servicing dealer2) If power is low or cranking effort very high, have valve clearance checked and, if necessary, adjusted by servicing dealer2) Check X Clean or replace KM 91 R X X X X X X X X X X X X X X X X X X X 19