Makita DCS3501 Instruction Manual

Also see for DCS3500: Repair manual Repair manual

Makita DCS3501 Instruction Manual Manual pdf 24 page image

24S HLSERVICEAdjusting the carburetorCAUTION: Carburetor adjustment may only be done by aspecialist MAKITA service centre!Do not undertake any adjustments to adjusting screws (H)and (L) without a tachometer! Incorrect adjustment can leadto engine damage!A tachometer is needed for adjustments to adjusting screws(H) and (L), because if the engine runs over its maximumrated speed, it can overheat and run out of lubricant. Thiscan damage the engine!Only adjusting screw (S) can be manipulated by the user.If the saw chain moves in idle (i.e. without the throttle beingpressed), it is imperative to correct the idle speed!Do not adjust the idle speed until after complete assemblyand testing of the saw!Idle speed adjustment must only be undertaken whenthe engine is warm, with a clean air filter and properly in-stalled guide bar and chain.Use a screwdriver (4 mm blade) for idle adjustments.Adjusting the idle speedTurn adjusting screw (S) counter-clockwise (unscrew): Idlespeed decreases.Turn adjusting screw (S) clockwise (screw in): Idle speedincreases.Important: If the saw chain still moves during idle evenafter you have adjusted the idle speed, do NOT use thesaw. Take it to a MAKITA service centre!Note:Carburetor adjustment aids in proper functioning, economi-cal consumption, and safe operation.Because of new exhaust regulations, the carburetor adjust-ing screw (H) now comes with a limit feature. The reducedadjustment range (about 180 degrees) prevents excessivelyrich carburetor settings. On some models, the adjusting screw(H) is locked. This ensures compliance with exhaust regula-tions, as well as good engine functioning and economical fuelconsumption.