Stihl MS 362 C-MQ Product Instruction Manual - Page 44
Adjusting the Carburetor
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English Adjusting the Carburetor General Information The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating conditions. With this carburetor it is only possible to correct the adjusting screws within fine limits. If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating. Standard setting LA N Shut off the engine N Check the air filter and clean or replace if necessary. N Check the spark arresting screen (country-specific) in the muffler and clean or replace if necessary. 0001BA008 KN N Turn the high speed screw (H) counterclockwise as far as stop (no more than 3/4 turn). N Turn the low speed screw (L) carefully clockwise as far as stop, then turn it back 1 full turn. Adjusting idle speed Engine stops while idling N Open the low speed screw (L) one full turn. N Turn the idle speed screw (LA) clockwise until the chain begins to run - then back it off 1 1/2 turns. Chain runs when engine is idling N Open the low speed screw (L) one full turn. N Turn the idle speed screw (LA) counterclockwise until the chain begins to run - then turn it another 1 1/2 turns in the same direction. If the chain continues moving when the engine is idling, have your saw checked and repaired by your servicing dealer. Erratic idling behavior, poor acceleration (even though low speed screw is open one turn) N Idle setting is too lean: Turn the low speed screw (L) counterclockwise until the engine runs and accelerates smoothly. It is usually necessary to change the setting of the idle speed screw (LA) after every correction to the low speed screw (L). Fine tuning for operation at high altitude A slight correction of the setting may be necessary if the engine does not run satisfactorily: N Turn high speed screw (H) clockwise (leaner) - no further than stop. If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating. 42 MS 362
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