Heating element

Repair instructions

On saws with a carburettor heater 346XPG, 351G, 353G

Remove the bracket’s two bolts above the carbu- rettor. Disconnect the cable connections to the carburettor heater and remove the heating ele- ment.

O

 

O

Z

 

N

 

Z

5

 

 

 

 

5

N

 

 

F

 

 

G

 

 

3

 

F

 

G

 

3

 

 

 

K V

 

 

 

X

 

KV

 

X

4

4

Y

1

 

Y

1

H

 

 

H

When replacing the thermostat: Disconnect the cable from X and V. Trouble shooting, see page 20.

On saws with carburettor 346XPG, 351G, 353G Replacing the heating element: Lower the rear section of the tank by removing the bolt between the hand grip cover and vibration damping springs. Remove the starter and then loosen the stop screws on both sides (one is located under the starter and this must be removed first). Now disconnect the cable from X and Y.

Dismantling the carburettor: Loosen the high, low and idling jet screws.

Carburettor – dismantling

The item numbers in the diagram refer to the steps below (1–7).

1

Remove the cover from the metering unit and carefully remove the metering diaphragm and gasket.

2

Undo the screw and take out the needle valve, together with the lever arm, spindle and spring.

3

Remove the cover from the pump unit and carefully remove the gasket and pump diaphragm.

4

Remove the fuel filter.

5

Remove the high, low and idling jet screws. (HDA 159A high and low jet screws are protected by plastic caps which can be prised off with a screw- driver. Only on EPA, see appendix A.)

6

Remove the plug by first drilling a hole in it and then prising it out with a screwdriver or the like.

7

If necessary remove the throttle and choke valves, and remove the spindles together with the lever arms and springs.

English – 31

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Husqvarna 340, 345, 346XP,350, 351, 353 Carburettor dismantling, On saws with a carburettor heater 346XPG, 351G, 353G
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340, 345, 346XP,350, 351, 353 specifications

Husqvarna is renowned for its high-quality chainsaws, and the Husqvarna 340, 345, 346XP, 350, 351, and 353 models are no exceptions. These models have garnered a reputation among both professional and amateur users for their reliability, durability, and cutting performance.

The Husqvarna 340 is an entry-level model designed for homeowners and light-duty tasks. It features a 40cc engine that provides a good balance of power and weight, making it easy to handle during extended use. The 340 is equipped with low-vibration technology, significantly reducing operator fatigue and making it suitable for less experienced users.

The Husqvarna 345 is slightly more powerful than the 340, boasting a 45.7cc engine. This model is ideal for users who require a bit more power for medium-duty tasks. It incorporates the air injection system, which helps to separate larger debris before it reaches the air filter, prolonging the life of the filter and maintaining optimal performance.

Moving up the range, the Husqvarna 346XP is a powerful professional chainsaw tailored for demanding tasks. With a 50.2cc engine and the X-Torq engine technology, it provides high cutting performance while reducing fuel consumption and emissions. The 346XP features an adjustable oil pump that allows for precise lubrication, making it an excellent choice for commercial users.

The Husqvarna 350 shares similarities with the 346XP but is designed for users who need a well-rounded saw for various applications. Its 50.2cc engine delivers ample power, and the ergonomically designed handle provides comfort during prolonged use. The chainsaw's advanced starting system ensures easy ignition, even in challenging conditions.

The 351 is another versatile option, equipped with a 50cc engine, designed for both professional and home use. It emphasizes user comfort and ease of handling. The compact design combined with features such as an efficient air filtration system makes the 351 suitable for long hours of work.

Lastly, the Husqvarna 353 is a heavy-duty model that excels in performance and longevity. It has a 50cc engine and incorporates various safety features, including a chain brake and throttle lock, to ensure safe operation. The saw also utilizes the unique anti-vibration system, minimizing vibrations that can lead to user fatigue.

In summary, the Husqvarna 340, 345, 346XP, 350, 351, and 353 models each offer distinct features catering to a wide range of users. From homeowners tackling light tasks to professionals requiring rugged performance, these chainsaws showcase Husqvarna's commitment to quality, innovation, and user-centric design.
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