Husqvarna 325HDA55X-Series, 325HE3X-Series, 325HE4X-Series, 323HE3 manual Muffler, Cooling system

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MAINTENANCE

Muffler

NOTE!

Some mufflers are fitted with catalytic converters. See “Techni- cal data” to find out if your machine is equipped with a catalytic converter.

The muffler is designed to dampen the noise level and to direct the exhaust fumes away from the user. The exhaust fumes are hot and can contain sparks, which can result in fire if the exhaust fumes are directed towards a dry and inflam- mable material. Some mufflers are equipped with a special spark arrest screen. If your machine is fitted with this type of screen it should be cleaned regularly. This is done using a wire brush. On mufflers without a catalytic converter the screen should be cleaned weekly, or replaced if necessary. On mufflers fitted with a catalytic converter the screen should be checked and cleaned monthly. If the screen is damaged it should be replaced. If the screen is

Cooling system

To maintain as low operat- ing temperature as possible the engine is equipped with a cooling system.

The cooling system consists of:

1.An air intake on the starter unit.

2.Cooling fins on the flywheel.

3.Cooling fins on the cylinder

4.Cylinder cover (leads cold air onto the cylinder).

Clean the cooling system using a brush at least once a week, in difficult conditions more often.

A dirty or blocked cooling system leads to the engine overheating resulting in damage to the cylinder and piston.

4

3

2

1

frequently blocked, this can be a sign that the function of the catalytic converter is impaired. Contact your dealer to inspect the muffler. A blocked screen will cause the engine to overheat resulting in damage to the

Spark plug

The condition of the spark plug is affected by:

An incorrect carburettor setting.

An incorrect fuel mixture (too much or faulty oil).

A dirty air filter.

These factors cause deposits on the spark plug electrode that may result in malfunction or starting difficulties.

cylinder and piston. Also see under “Maintenance”.

NOTE!

Never use a machine with a defective muffler.

!WARNING!

Mufflers fitted with catalytic converters become extremely hot during use and after stopping. This also applies at idling speeds. Contact can result in burns to the skin. Be observant to the risk of fire!

If the machine is low on power, difficult to start or runs poorly while idling always check the spark plug first before taking other action.

If the spark plug is dirty, clean it and at the same time check that the electrode gap is 0.5 mm. The spark plug should be changed after about one month of operation or earlier if necessary.

NOTE! Always use the recommended type of spark plug. An incorrect spark plug can damage the cylinder/piston.

0,5 mm

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Contents 114 00 325HDA55X-SERIESSymbols Symbol ExplanationContents Machine’s protective equipment Safety InstructionsPersonal protective eqipment Blade guard Vibration damping systemMuffler Hand guard Gearbox BladesBlade guard 325HDA55 Fuel safety General safety instructionsStart Transport and storagePersonal protection Safety instructions when using the hedge trimmerProtective instructions regarding the surroundings Protective instructions while workingBasic working techniques Protective instructions when work is completedChanging the hedge trimmer angle 325HE3, 325HE4 325HDA55What is what on the hedge trimmer? What is WHAT?Fitting the cutting attachment AssemblyAdjusting the harness 325HE4 Fuelling Fuel HandlingFuel Control before starting Start and StopStart and stop StopCarburettor MaintenanceHigh speed needle H Correctly adjusted carburettor Adjusting the idle speed, TSpark plug MufflerCooling system Air filter Cleaning the air filterGearbox LubricationDaily maintenance Maintenance scheduleWeekly maintenance Monthly maintenance325HDA55 325HE3 325HE4 Technical DataTechnical data Your Warranty Rights Obligations Emission Control Warranty Statement´+HÆe¶5d¨ Page 2001W10

325HDA55X-Series, 325HE3X-Series, 325HE4X-Series, 323HE3 specifications

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