Husqvarna 123HD60 Operator's Manual

Also see for 123HD60: Operator's manual Operator's manual Workshop manual

Contents

English – 15MAINTENANCECarburettorYour Husqvarna product has been designed andmanufactured to specifications that reduce harmfulemissions. After the engine has used 8-10 tanks of fuel theengine will be run-in. To ensure that it continues to run at peakperformance and to minimise harmful exhaust emissionsafter the running-in period, ask your dealer/service workshop(who will have a rev counter at their disposal) to adjust yourcarburettor.Function• The carburettor governs the engine’s speed via thethrottle control. Air and fuel are mixed in the carburettor.The air/fuel mixture is adjustable. Correct adjustment isessential to get the best performance from the machine.• Adjusting the carburettor means that the engine isadapted to local operating conditions, e.g. climate,altitude, petrol and the type of 2-stroke oil.Adjusting the idle speedThe T-screw regulates the throttle setting at idle speed. If theT-screw is turned clockwise this gives a higher idle speed;turning it anti-clockwise gives a lower idle speed.Before any adjustments are made, make sure that the air filteris clean and the air filter cover is fitted.Adjust the idle speed with the idle adjustment screw T, ifadjustment is necessary. First turn the idle adjustment screwT clockwise until the blades start to move. Then turn the idleadjustment screw T anticlockwise until the blades stop. Theidle speed is correctly adjusted when the engine runssmoothly in every position. There should also be a clearmargin to the speed at which the blades start to move.The blades must also remain stationary when the chokecontrol is in the start throttle position.MufflerCAUTION! Some mufflers are fitted with a catalyticconverter. See chapter on Technical data to see whether yourmachine is fitted with a catalytic converter.The muffler is designed to reduce the noise level and to directthe exhaust gases away from the operator. The exhaustgases are hot and can contain sparks, which may cause fireif directed against dry and combustible material.Some mufflers are equipped with a special spark arrestormesh. If your machine has this type of muffler, you shouldclean the mesh at least once a week. This is best done with awire brush.On mufflers without a catalytic converter the mesh should becleaned weekly, or replaced if necessary. On mufflers fittedwith a catalytic converter the mesh should be checked, and ifnecessary cleaned, monthly. If the mesh is damaged itshould be replaced. If the mesh is frequently blocked, thiscan be a sign that the performance of the catalytic converteris impaired. Contact your dealer to inspect the muffler. Ablocked mesh will cause the machine to overheat and resultin damage to the cylinder and piston. See also instructionsunder the heading Maintenance.CAUTION! Never use a machine with a defective muffler.! WARNING! The complete clutch cover andgear housing must be fitted before themachine is started, otherwise the clutch maycome loose and cause personal injury.! WARNING! If the idle speed cannot beadjusted so that the cutting attachmentstops, contact your dealer/serviceworkshop. Do not use the machine until ithas been correctly adjusted or repaired.T! WARNING! Mufflers fitted with catalyticconverters get very hot during use andremain so for some time after stopping. Thisalso applies at idle speed. Contact can resultin burns to the skin. Remember the risk offire!