Muffler Cooling system, Spark plug | Husqvarna 326HS75, 326HS99

MAINTENANCE

Muffler

NOTE!

Cooling system

Some mufflers are fitted with a catalytic converter. See

“Technical data” to see whether you clearing saw is fitted 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 inflammable 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

To maintain as low opera- ting 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 cylin- der).

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

1 2

3 4

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 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

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

Spark plug

The condition of the spark plug is affected by:

•An incorrect carburetor 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.

the engine to overheat resulting in damage to the 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

16 – English

326HS99, 326HS75 specifications

The Husqvarna 326HS75 and 326HS99 are two advanced hedge trimmers designed for both professional landscapers and dedicated gardeners. These models exhibit a fusion of power, durability, and cutting-edge technology, providing an efficient solution for maintaining hedges and shrubs.

One of the most notable features of both models is their powerful engine. The Husqvarna 326HS75 comes equipped with a 24.5 cc, 1.0 kW two-stroke engine, while the 326HS99 is powered by a more robust 27.6 cc engine, delivering 1.1 kW of power. This allows users to tackle even the most resilient hedges with ease, achieving clean, precise cuts without straining the machine.

The innovative design of the cutting system is another highlight. Both models feature double-sided blades, designed for optimal cutting efficiency. The 26-inch long blades provide an extended reach, ideal for reaching high or wide hedges. The sharp, dual-action cutting design minimizes vibrations and enhances cutting speed, allowing users to work through dense foliage quickly.

In terms of comfort, both hedge trimmers incorporate ergonomic handles that reduce operator fatigue during prolonged use. They are designed with a lightweight structure, making them easy to maneuver. Additionally, the adjustable rear handle ensures a secure grip, providing better control in various cutting positions.

The 326HS75 and 326HS99 also showcase advanced technology to enhance performance. The LowVib technology minimizes vibrations typically experienced during operation, aiding in user comfort and safety. Furthermore, the Air Injection feature in both models ensures a clean air supply to the engine, which leads to improved performance and extended intervals between air filter cleaning.

For users concerned about environmental impact, both models adhere to stringent emission regulations, ensuring efficient fuel consumption while reducing harmful emissions. The fuel tank design allows for a transparent view of fuel levels, preventing unexpected downtime.

In summary, the Husqvarna 326HS75 and 326HS99 hedge trimmers are exemplary tools in the landscaping segment. Their combination of powerful engines, efficient cutting systems, ergonomic design, and innovative technologies make them ideal for anyone looking to achieve professional results while maintaining comfort and reducing environmental impact. Whether for commercial or residential use, these hedge trimmers provide the reliability and performance necessary to shape and define any garden space.