Stihl MS 180 Product Instruction Manual - Page 43

English Cleaning the Air Filter Engine Management Adjusting the Carburetor If there is a noticeable loss of engine power N Simultaneously press the throttle trigger lockout and throttle trigger and set the Master Control lever to cold start l N Clean away loose dirt from around the filter N Remove the shroud - see "Shroud" Exhaust emissions are controlled by the design of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any major hardware. Basic information The carburetor has been factoryadjusted to provide the engine with a optimal fuel-air mixture in all operating states. 207BA037 KN 207BA029 KN N Pull the filter upwards to remove N Knock out the filter or blow it clear with compressed air from the inside outwards - do not wash Do not clean fleece filters with a brush! If the filter cannot be cleaned or is damaged, replace the filter N Reinstall air filter MS 170, MS 170 C, MS 180, MS 180 C Standard setting N Check the air filter - replace if necessary N Check spark arresting screen - clean or replace it if necessary N Carefully screw the idle speed screw (LD) down counterclockwise (left-hand thread) until it is firmly seated, then 2 turns clockwise (standard setting LD = 2) Setting the idle speed N Start and warm up the engine N Using the idle speed screw (LD), set the idle speed correctly: The saw chain must not rotate Engine speed too low when idling: 41