Stihl TS 410 Instruction Manual - Page 45
Adjusting the Carburetor
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Adjusting the Carburetor Standard setting Basic information The ignition system of this cut-off machine is equipped with an electronic maximum speed limiter. The maximum speed cannot be increased beyond a specified limit. The carburetor comes from the factory with a standard setting. The carburetor has been adjusted for optimum performance and fuel efficiency in all operating states. Preparing the machine N Switch off the engine N Check the air filter - clean or replace it if necessary N Check the spark arresting screen in the muffler (present only in some countries) - clean or replace it if necessary N Turn the high speed adjusting screw (H) counterclockwise as far as possible (max. 3/4 turn) N Turn the low speed adjusting screw (L) clockwise as far as possible - then turn it 3/4 turn counterclockwise Setting the idle speed N Make standard setting N Start engine and let it warm up Engine stops when idling N Turn the idle speed adjusting screw (LA) clockwise until the abrasive wheel begins to rotate - then turn it back 1 turn 370BA090 KN 370BA029 KN English Abrasive wheel runs when idling N Turn the idle speed screw (LA) counterclockwise until the abrasive wheel stops running - then turn another full turn in the same direction WARNING If the abrasive wheel continues to keep rotating in idle even after adjustment, have the cut-off machine checked by a servicing dealer. Speed erratic when idling; poor acceleration (despite adjustment to LA setting) The idle setting is too lean. N Turn the low speed adjusting screw (L) approx. 1/4 turn counterclockwise until the engine runs and accelerates smoothly - max. up to the stop Idle speed cannot be increased sufficiently via the idle speed adjusting screw (LA), engine stops when changing from part-load to idle speed The idle setting is too rich. N Turn low speed adjusting screw (L) approx. 1/4 turn clockwise. Whenever the low speed adjusting screw (L) has been adjusted, it is usually also necessary to readjust the idle speed adjusting screw (LA). TS 410, TS 420 43