Maintenance, Carburettor | Husqvarna 125BT, 141B, 155B, 165BT

MAINTENANCE

Carburettor

Your Husqvarna product has been designed and manufactured to speciﬁcations that reduce harmful emissions. After the engine has used 8-10 tanks of fuel the engine will be run-in. To ensure that it continues to run at peak performance and to minimise harmful exhaust emissions after the running-in period, ask your dealer/service workshop (who will have a rev counter at their disposal) to adjust your carburettor.

WARNING! The machine may only be started

!in its complete design. If the machine is started without all the guards ﬁtted there is a risk of personal injuries.

Function

The carburettor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburettor. The air/fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine.

Adjusting the carburettor means that the engine is adapted to local operating conditions, e.g. climate, altitude, petrol and the type of 2-stroke oil.

Fine adjustment of the idle speed T

Adjust the idle speed using the idle adjustment screw T, if it is necessary to readjust.

The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle speed; turning it anti-clockwise gives a lower idle speed. The idle speed is correctly adjusted when the engine will run smoothly in every position.

Rec. idle speed See the Technical data section.

Mufﬂer

The mufﬂer is designed to reduce the noise level and to direct the exhaust gases away from the operator.The exhaust gases are hot and can contain sparks, which may cause ﬁre if directed against dry and combustible 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 frequently blocked, this can be a sign that the function of the catalytic converter is impaired.

CAUTION! Never use a machine with a defective mufﬂer.

Cooling system

To keep the working temperature as low as possible the machine is equipped with a cooling system.

The cooling system consists of:

1Air intake on the starter.

2Fins on the ﬂywheel.

3Cooling ﬁns on the cylinder.

4Cylinder cover (directs cold air over the cylinder).

Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder.

14 – English

125BT, 141B, 155B, 165BT specifications

Husqvarna is a renowned name in the outdoor power equipment industry, celebrated for its innovative design, high performance, and durable products. Among their impressive lineup of leaf blowers are the Husqvarna 125BT, 141B, 155B, and 165BT models, each offering unique features to cater to various needs.

The Husqvarna 125BT is a lightweight and easy-to-use backpack blower, designed for residential and commercial use. Weighing only 22.5 pounds, it is equipped with a powerful 25.4 cc engine that provides a maximum air velocity of 170 mph. The ergonomic design ensures comfort during prolonged use, with adjustable shoulder straps and a ventilated harness to reduce strain. Its unique X-Torq engine reduces fuel consumption and emissions, making it an environmentally friendly choice.

Next in line is the Husqvarna 141B, a handheld blower that prioritizes user-friendly operation. This model features a 28 cc engine and delivers air speeds of up to 150 mph. The lightweight construction, weighing in at just 9.5 pounds, allows for easy maneuverability and less fatigue during extended use. The 141B also includes a cruise control function, enabling users to set a steady blowing speed, enhancing overall efficiency in yard cleanup.

The Husqvarna 155B takes handheld blowing to the next level with its 50.2 cc engine, producing a remarkable air speed of 180 mph. This model is known for its balanced design, which helps minimize vibrations, allowing users to work longer with increased comfort. The 155B also features the X-Torq engine technology, which enhances fuel efficiency while reducing harmful emissions. Additionally, the easy-to-access air filter makes maintenance a breeze, ensuring optimal performance throughout the season.

Lastly, the Husqvarna 165BT combines advanced features and power, making it ideal for larger properties. With a 50.2 cc X-Torq engine, this backpack blower delivers an impressive air velocity of up to 180 mph and ensures extended operation time with its 42.27 fl. oz fuel tank. The ergonomic design promotes user comfort, with adjustable straps and a padded back support for easier carrying. The blower is also designed with a high-efficiency fan, which maximizes air output while minimizing fatigue.

In summary, the Husqvarna 125BT, 141B, 155B, and 165BT models each stand out with their unique characteristics and technology. These machines cater to homeowners and professionals alike, ensuring powerful performance, comfort, and efficiency in lawn care and maintenance tasks. With Husqvarna, users can expect reliability and cutting-edge design in their outdoor power equipment.