Stihl MS 290 STIHL FARM BOSS Product Instruction Manual - Page 54

Please note that the following maintenance intervals apply for normal operating conditions only. If your daily working time is longer than normal or cutting conditions are difficult (very dusty work area, resin-rich wood, tropical wood etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. Carburetor Check idle adjustment - chain must not rotate X X Readjust idle Spark plug Readjust electrode gap Replace after about 100 operating hours All accessible screws and nuts (not adjusting screws) 2) Retighten Spark arresting screen 3) in muffler Inspect Clean or replace Check X Chain catcher Replace Safety label Replace 1) STIHL recommends that this work be done by a STIHL servicing dealer 2) Firmly tighten cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation 3) not in all versions, market-specific 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 MS 290, MS 310, MS 390 53