Manuals / Husqvarna / Lawn and Garden / Chainsaw

Husqvarna 1153179-26 Carburettor without movement limiters, Low speed jet L, High speed jet H

Models: 1153179-26

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MAINTENANCE

•Place the machine on a flat surface so that the bar points away from you and so that the bar and chain do not come into contact with the surface or other objects.

Low speed jet L

Turn the low speed jet L clockwise until it stops. If the engine accelerates poorly or idles unevenly, turn the low speed jet L anticlockwise until good acceleration and idling are achieved.

Fine adjustment of the idle speed T

Adjust the idle speed with the T-screw. If it is necessary to re-adjust, turn the T-screw clockwise while the engine is running, until the chain starts to rotate. Then turn anti- clockwise until the chain stops. When the idle speed is correctly adjusted the engine should run smoothly in every position and the engine speed should be safely below the speed at which the chain starts to rotate.

!

WARNING! Contact your servicing

dealer, if the idle speed setting cannot be

 

adjusted so that the chain stops. Do not

 

use the chain saw until it has been

 

properly adjusted or repaired.

High speed jet H

At the factory the engine is adjusted at sea level. When working at a high altitude or in different weather conditions, temperatures and atmospheric humidity, it may be necessary to make minor adjustments to the high speed jet.

CAUTION! If the high speed jet is screwed in too far, it may damage the piston/cylinder.

When test run at the factory, the high speed jet is set so that the engine satisfies the applicable legal requirements at the same time as achieving maximum performance. The carburettor’s high speed jet is then locked using a limiter cap in the fully screwed out position. The limiter cap limits the potential to adjust the high speed jet to at most half a turn.

Correctly adjusted carburettor

When the carburettor is correctly adjusted the machine accelerates without hesitation and 4-cycles a little at full throttle. It is also important that the chain does not rotate at idle. If the L-jet is set too lean it may cause starting difficulties and poor acceleration. If the H-jet is set too lean the machine will have less power, poor acceleration and could suffer damage to the engine.

Carburettor without movement limiters

•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.

•The satisfactory operation of a catalytic converter depends, among other factors, on the correct adjustment of the carburettor. Carefully follow the instructions below, using a tachometer as an aid.

•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.

•The carburettor has three adjustment controls:

-L = Low speed jet

-H = High speed jet

-T = Idle adjustment screw

L H

T

•The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anti-clockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed.

•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.

Basic settings and running in

The basic carburettor settings are adjusted during testing at the factory.

The basic settings are H = 1 turn and L = 1 turn. To provide the engine’s components with good initial lubrication (during running in) the carburettor should be set for a richer fuel mixture for the first 3-4 hours that the chain saw is in use. To do this, adjust the fast idle speed to 600-700 rpm below the recommended maximum fast idle speed.

If you are unable to check the fast idle speed using a tachometer the H-jet should not be set for a leaner mixture than given in the basic settings. The recommended maximum fast idle speed must not be exceeded.

CAUTION! If the chain rotates while idling the T-screw must be turned anti-clockwise until the chain stops.

Rec. idle speed: 2700 rpm

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Husqvarna 1153179-26 manual Carburettor without movement limiters, Low speed jet L, Fine adjustment of the idle speed T
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1153179-26 specifications

The Husqvarna 1153179-26 is a powerful and efficient lawn mower designed for homeowners who seek a balance of performance and ease of use. One of the standout features of this model is its lightweight and compact design, making it easy to maneuver around your garden or yard. With a robust engine, it offers reliable performance, delivering the power needed to tackle various types of grass and terrain with ease.

Equipped with a cutting width of 26 inches, the Husqvarna 1153179-26 allows for efficient mowing over larger areas while still being able to navigate tight spots effectively. The adjustable cutting height adds to its versatility, enabling users to choose the perfect length for their lawns, whether they prefer a manicured look or a more natural appearance.

The mower incorporates advanced technologies that enhance its performance and user experience. The Smart Start feature enables quick and easy starting of the engine with minimal effort, so you can get to mowing without wastefully pulling on a cord multiple times. The air injection system ensures that the air filter remains clean, thereby prolonging the life of the engine and reducing maintenance needs.

Another excellent feature of the Husqvarna 1153179-26 is its ergonomic handle design, which allows for comfortable operation, reducing fatigue during extended mowing sessions. This is particularly beneficial for homeowners with larger properties who have to spend considerable time tending to their lawns.

Durability is a key characteristic of this model, as it features a sturdy construction designed to withstand the rigors of frequent use. The mower's materials are engineered to resist wear and damage, ensuring longevity and reliability.

Additionally, the Husqvarna 1153179-26 has a mulching capability, allowing you to recycle grass clippings back into your lawn, promoting healthier growth and reducing waste. This eco-friendly feature not only improves your lawn’s health but also minimizes the need for bagging and disposal.

In conclusion, the Husqvarna 1153179-26 combines portability, power, and advanced technology to provide an exceptional mowing experience. Its lightweight design, powerful engine, and user-friendly features make it an excellent choice for homeowners looking to maintain a beautiful lawn with ease.