MAINTENANCE

Adjustment of the oil pump

Heated handles (346XPG, 351G)

The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The saw is supplied from the factory with the screw set to position 2. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

 

+

–

2

1

 

3

 

 

On the models 346XPG and 351G both the front handle and the rear handle are equipped with electrical heating coils. These are supplied with electricity from a built-in generator in the electrical system.

When the switch is pushed upwards, the heat is switched on. When it is pushed downwards the heat is switched off.

WARNING! The engine must not be running when making adjustments.

Recommended settings:

Bar 13"-15": Position 1

Bar 15"-18": Position 2

Bar 18"-20": Position 3

Cooling system

To obtain the lowest possible running temperature the saw is

equipped with a cooling system.

5

The cooling system

 

consists of:

4

1.

Air intake on the starter unit.

3

2.

Air guide plate.

 

3.

Fan blades on the

 

 

flywheel.

 

4.Cooling fins on the

cylinder.

2

5. Cylinder cowling (supplies

1

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 saw overheating which causes damage to piston and cylinder.

NOTE! The cooling system of chain saws that are fitted with a catalytic converter must be cleaned daily. This is particularly important on saws with catalytic converters, because the higher working temperature of the exhaust demands efficient cooling of the engine and the catalytic converter unit.

Centrifugal cleaning ”Air Injection”

Centrifugal cleaning means the following:

All air to the carburettor is carried through the starter. Dirt and dust is centrifuged away by the cooling fan.

IMPORTANT! In order to keep the function of the centrifugal cleaning, a continous maintenance and care must be made.

• Clean the air intake to the starter, the fan wings of the flywheel, the space around the flywheel, inlet pipe and carburettor space.

Winter use

During winter time, snow and cold weather can cause running problems, such as:

•Too low engine temperature.

•Icing of the air filter and freezing of the carburettor.

Therefore some special measures are required:

•Partly reduce the air inlet of the starter and by doing that increase the engine temperature.

•Preheat the intake air to the carburettor by using the heat from the cylinder.

Temperature 0°C (32°F) or colder:

The cylinder cover is made so it can be adjusted for running in cold weather. Open the winter flap so that preheated air from the cylinder can pass into the carburettor area preventing for instance icing of the air filter.

For temperatures below -5°C (23°F) and/or in snow conditions there is also:

• a special cover (A) for the starter housing,

• a winter plug (B) for the air intake that is fitted as shown.

These reduce the air flow and prevent large amounts of snow from being sucked into the carburettor chamber. NOTE! When the winter plug is fitted the winter flap must be open.

IMPORTANT! If the temperature rises above -5°C (23°F) or 0°C (32°F) respectively the saw MUST be restored to its normal settings. Otherwise there is a risk of overheating, which can cause severe engine damage.

IMPORTANT! Any maintenance other than that described in this manual must be carried out by your servicing dealer.

32 – English

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Husqvarna 346XP 351 manual Adjustment of the oil pump Heated handles 346XPG, 351G, Cooling system, Winter use
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346XP 351 specifications

The Husqvarna 346XP and 351 chainsaws are celebrated models within the Husqvarna lineup, recognized for their excellence in performance, efficiency, and ease of use. Designed predominantly for professional use, these chainsaws incorporate advanced technology and ergonomic features that cater to the needs of tree care specialists, landscapers, and serious woodworkers.

One of the standout features of the Husqvarna 346XP is its lightweight design, which allows for easy maneuverability and reduced fatigue during extended use. Weighing around 10.8 pounds, the chainsaw is equipped with a powerful 50.1cc, 2.8 horsepower engine, delivering exceptional cutting performance while maintaining efficient fuel consumption. The model comes equipped with a 15 to 18-inch guide bar, providing versatility for various cutting tasks, from limbing to felling small trees.

The 351 model offers similar performance metrics but is designed slightly differently, featuring an improved air injection system for cleaner operation. This system actively collects debris before it reaches the air filter, extending the service intervals and enhancing engine life. The powerful 51.7cc engine on the 351 provides a higher power output compared to the 346XP, suited for even the most demanding cutting jobs.

Both chainsaws utilize Husqvarna’s X-Torq engine technology, which reduces fuel consumption by up to 20% while lowering emissions. This not only promotes environmental sustainability but also translates into cost savings for users. The LowVib technology integrated into both models minimizes vibrations, ensuring a more comfortable experience and reducing operator fatigue.

Enhanced safety features are also paramount in both chainsaws. The inertia-activated chain brake activates quickly in the event of a kickback, providing an additional layer of protection. An adjustable oil pump allows users to control the lubrication rate, optimizing the chainsaw's performance based on the type of work being performed.

The ergonomic design of the handles enhances grip and control, allowing for precision cutting. These chainsaws are user-friendly, catering to both experienced operators and those new to chainsaw work. Overall, the Husqvarna 346XP and 351 represent a perfect blend of power, technology, and comfort, making them reliable choices for professional and serious amateur users alike.
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