Manuals / Husqvarna / Lawn and Garden / Chainsaw

Husqvarna 345e EPA II, 346XP EPA I, 353 EPA II High speed jet H, Correctly adjusted carburetor

Models: 345e EPA II, 346XP EPA I, 353 EPA II

1 44
Download 44 pages 18.79 Kb
Page 31
Image 31

MAINTENANCE

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 carburetor’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 carburetor

When the carburetor is correctly adjusted the machine accelerates without hesitation and the machine 4-cycles a little at max. speed. 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.

Checking, maintaining and servicing chain saw safety equipment

Note! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below we recommend you to contact our servicing dealer.

Chain brake and front hand guard

Checking brake band wear

Brush off any wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.

Regularly check that the brake band is at least 0.024 inch (0.6 mm) thick at its thinnest point.

Checking the front hand guard

Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.

Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover.

Checking the inertia brake release

With the engine turned off, hold the chain saw over a stump or other firm object. Let go of the front handle so that the bar drops towards the stump as the chain saw rotates around the rear handle.

When the bar hits the stump the brake should be applied.

Checking the right-hand brake trigger

Check that the right hand guard is not damaged and that there are no visible defects, such as cracks.

English – 31

Page 30 Page 32
Page 31
Image 31
Husqvarna 345e EPA II, 346XP EPA I, 353 EPA II manual High speed jet H, Correctly adjusted carburetor
Page 30 Page 32

345e EPA II, 346XP EPA I, 353 EPA II specifications

Husqvarna is a renowned name in outdoor power equipment, and its chainsaws exemplify performance, durability, and advanced technology. Among their impressive lineup, the Husqvarna 345e EPA II, 346XP EPA I, and 353 EPA II stand out due to their unique features and capabilities tailored for both professional and casual users.

The Husqvarna 345e EPA II is designed for optimal power-to-weight ratio, making it a favorite for professionals who need mobility without sacrificing performance. This model is powered by a 50.1 cc engine that delivers a robust 3.2 horsepower, providing ample power for demanding cutting tasks. The 345e features a lightweight design, which reduces fatigue during extended use. It also incorporates the X-Torq engine technology, which reduces fuel consumption and emissions, ensuring compliance with EPA regulations. Additionally, the chainsaw comes equipped with an inertia-activated chain brake for enhanced safety and a tool-less chain tensioning system for quick adjustments.

Next is the Husqvarna 346XP EPA I, a top choice for professional loggers and tree care specialists. This chainsaw features a 50.1 cc engine as well, but its unique design focuses on high performance and exceptional ergonomics. The 346XP is renowned for its rapid acceleration and high chain speed, which allow it to tackle tough cutting jobs with ease. Its Air Injection technology separates larger dust and debris, ensuring the air filter remains clean for longer periods, thereby reducing maintenance. This model is also equipped with the LowVib system that minimizes vibrations, enhancing user comfort during prolonged use.

Finally, the Husqvarna 353 EPA II is tailored for those seeking a middle ground between professional and casual use. This chainsaw features a 49.5 cc engine and balances power with user-friendly features. It is equipped with the same X-Torq engine technology found in the 345e, ensuring efficient fuel consumption and lower emissions. The 353 also boasts a well-designed handle for improved grip and control, making it ideal for various cutting tasks from firewood to felling trees. Its quick-release air filter makes maintenance straightforward, allowing users to focus more on their work.

Together, the Husqvarna 345e EPA II, 346XP EPA I, and 353 EPA II represent a blend of cutting-edge technology and user-oriented design, delivering reliability and performance, whether for professional use or home maintenance. Each model offers unique strengths, ensuring there is a perfect fit for every chainsaw user’s needs.