CRANKSHAFT, PISTON AND CYLINDER

Cleaning and inspection

Clean all parts, scrape off any sealant from the crankcase and the cylinder’s contact surfaces. Remove carbon deposits from the following areas:

1.The piston crown.

2.Top of the cylinder bore (inside).

3.The cylinder exhaust port.

Check the following:

1.That the cylinder’s surface coating is not worn. Especially the upper part of the cylinder.

2.That the cylinder is free of score marks.

3.That the piston is free of score marks. Minor scratches can be polished off using fine emery paper.

4.That the piston ring is not burnt into its groove.

5.Measure the piston ring wear by placing it in the bottom of the cylinder bore and measuring the play. Play should not exceed 1 mm.

6.That the intake manifold is undamaged.

7.That the bearings and their rubber seals are undamaged.

8.That the big-end bearing does not have any radial play. Axial play is permitted.

9.That the big-end bearing does not have any score marks or is discoloured on the sides.

10.That the bearing surfaces for the little-end does not have any score marks or is discoloured.

11.Crankshaft cannot be reconditioned. In the event of dam- age the crankshaft must be replaced.

12.That the crankcase is not cracked.

Faults and causes

Score marks on the piston

1.Incorrect carburettor setting. Too high overspeed.

2.Too low octane fuel.

3.Too low or incorrect oil in the fuel.

Carbon build-up

1.Incorrect carburettor setting. Too low overspeed.

2.Too much or incorrect oil in the fuel.

Piston ring breakage

1.Excessive engine speed.

2.Piston ring worn out.

3.Oversized piston ring groove.

48 – English

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Husqvarna 336, 334T, 339XP, 338XPT, Chain Saw manual Cleaning and inspection, Faults and causes
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338XPT, 334T, Chain Saw, 336, 339XP specifications

The Husqvarna 336 is a powerful and reliable chainsaw designed for both professional forestry work and demanding garden tasks. This versatile tool is ideal for users who value durability, performance, and ease of use. The 336 model stands out in the Husqvarna range thanks to its innovative features and cutting-edge technology.

One of the main highlights of the Husqvarna 336 is its efficient engine. Powered by a 34.6 cc, 2.6 kW engine, it strikes a balance between power and weight, ensuring that users can handle it comfortably during extended use. The X-Torq engine technology reduces fuel consumption and emissions, making it an environmentally-friendly option, while still delivering high performance.

The design of the Husqvarna 336 is crafted for maximum user comfort. The chainsaw features an ergonomic handle that ensures a secure and balanced grip, reducing fatigue during long periods of operation. Additionally, the lightweight design enhances maneuverability, allowing users to navigate through tight spaces and tackle challenging cuts with ease.

Safety is paramount in the design of the Husqvarna 336. The chainsaw is equipped with a quick-release air filter system, which makes maintenance simple and efficient. The chain brake works effectively to prevent accidents, and the chainsaw is fitted with a low-vibration system that minimizes vibrations felt by the user, improving overall comfort and control.

Another notable feature of the Husqvarna 336 is its intuitive controls, which allow users to quickly adjust settings and make necessary changes on the job. The model boasts an adjustable oil pump that lets users optimize chain lubrication based on the task at hand. This means improved efficiency and extended chain life, ultimately saving users both time and money.

The chainsaw also incorporates an easy-start mechanism, reducing the effort required to start the engine. This makes the Husqvarna 336 a practical choice for users of all skill levels, from seasoned professionals to beginners looking to tackle their first projects.

In summary, the Husqvarna 336 is a standout chainsaw that combines power, comfort, and advanced technology. Its features, including the X-Torq engine, ergonomic design, safety elements, and ease of maintenance, make it an excellent investment for anyone serious about forestry work or outdoor upkeep. Whether pruning trees, cutting firewood, or felling small trees, the Husqvarna 336 excels in performance and reliability, ensuring users get the job done efficiently and effectively.
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