Husqvarna 394XP Cooling system, Centrifugal cleaning Air Injection, Heated handles, Winter use

Page 32

MAINTENANCE

Cooling system

To obtain the lowest possible running temperature the saw is equipped with a cooling system.The cooling system consists of:

1.

Air intake on the starter

5

 

unit.

 

2.

Air guide plate.

4

 

3.

Fan blades on the

3

 

 

flywheel.

 

4.

Cooling fins on the

 

 

cylinder.

 

5.

Cylinder cowling

2

1

 

(supplies 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.

Centrifugal cleaning ”Air Injection”

Centrifugal cleaning means the following:

All air to the carburetor 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 carburetor space.

Heated handles

On the model XPG 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. The switch for the heating coils is placed to the right of the rear handle. When the switch is pushed to the right, the heat is switched on. When it is pushed to the left, the heat is switched off.

Winter use

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

•Too low engine temperature.

•Icing on the air filter and carburetor.

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 carburetor by removing the special plug between the cylinder and the carburetor space.

Mounting of winter kit

• Brake away and discard the intermediate wall.

• Cut out the hole by using a knife according to the illustration.

• Mount the winter plug.

Temperature 0oC (32oF) or colder

Move the plug from position

 

1 to position 2 so that the

1

preheated air from the

 

cylinder can pass into the

 

carburetor space and

2

prevent icing on the airfilter.

NOTE! When the plug is

 

mounted in the air nozzle

 

for the ”Air injection” the air

 

filter must be cleaned at

 

least once every day.

 

Temperature -5oC

 

(23oF) or colder

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For running the saw in cold weather or powder snow, a

special cover is available, which is mounted on the

starter housing. This reduces the air flow and prevents large amounts of snow from being sucked in.

IMPORTANT! If a special winter kit is assembled or measures are taken to increase the engine temperature, a readjustment to normal setting has to be done when the saw is used under normal conditions. 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.

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Contents 394XP 101 90KEY to Symbols SymbolsContents Personal Protective Equipment Safety InstructionsChain SAW Safety Equipment Chain brake and front hand guard Right hand guard Throttle lockChain catcher Muffler Stop switchVibration damping system Checking brake band wear Checking the front hand guardChecking the automatic brake Checking the brake triggerThrottle lock Cutting Equipment 5 basic rulesCutting equipment designed to minimise kickback BarSaw chain Some terms that describe the bar and chainSharpening cutting teeth Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth Tensioning the chain General advice on setting raker clearanceSetting the raker clearance Lubricating cutting equipment Chain oilFilling with chain oil Never use waste oilChecking chain lubrication Lubricating the clutch drum bearingChecking wear on cutting equipment Lubricating the bar tip sprocketHOW to Avoid Kickback What is kickback?Never use the saw one- handed General rulesDo not let go of the handles 10 ft General Safety PrecautionsMin m Basic safety rules General Working InstructionsBasic cutting technique GeneralTerms CuttingTree felling technique Safe distanceLimbing Felling directionClearing the trunk and preparing your retreat FellingGeneral advice Freeing a tree that has fallen badly = high accident riskCutting the trunk into logs Freeing a Trapped treeWhat is WHAT? Assembly Mounting guide bar and chainFuel Handling FuelmixFuelling Min 3 mStart and Stop StartCold engine Warm engineMaintenance CarburetorStarter device assembly Starter deviceChanging a broken or worn starter cord Tensioning the recoil springAdjustment of the oil pump Needle bearing maintenanceAir filter Spark plugCentrifugal cleaning Air Injection Cooling systemHeated handles Winter useWeekly maintenance Daily maintenance Monthly maintenanceTechnical Data 394XPFederal Emission Control Warranty Statement Your Warranty Rights Obligations1998W48

394XP specifications

The Husqvarna 394XP is a powerful chainsaw designed for professional use, catering to the demands of loggers and forestry workers. Launched as part of Husqvarna's XP series, the 394XP offers a perfect blend of performance, durability, and ergonomic design, making it an outstanding choice for heavy-duty cutting tasks.

One of the standout features of the 394XP is its robust engine. It is equipped with a 94 cc, two-stroke engine that delivers impressive power while maintaining efficient fuel consumption. This high-output engine ensures that users can tackle demanding jobs with ease, whether it’s felling large trees or processing timber. The chainsaw also features a high chain speed, which enhances cutting performance and efficiency.

The 394XP is designed with user comfort in mind. It includes an adjustable oil pump, which allows for better control over oil flow and helps prolong the lifespan of the bar and chain. Additionally, the chainsaw boasts a lightweight design, which minimizes user fatigue during prolonged use. The ergonomic handle is designed to provide an optimal grip, ensuring maximum control and comfort during operation.

In terms of advanced technologies, the Husqvarna 394XP integrates the Air Injection system. This innovative technology helps to reduce wear and tear on the engine by separating larger dust and debris particles before they reach the air filter. This results in less frequent maintenance, ensuring the chainsaw operates smoothly over extended periods. The chainsaw also features the LowVib® system that significantly reduces vibrations, further enhancing comfort and allowing for longer usage without strain.

The chainsaw is fitted with a durable, forged cutting chain that provides sharp and precise cuts. Coupled with a guide bar that is available in various lengths, users can choose the optimal configuration for their cutting needs. The quick-release air filter makes maintenance simpler and faster, ensuring that the saw remains in peak condition.

In summary, the Husqvarna 394XP stands out in the world of professional chainsaws due to its exceptional power, innovative technologies, and user-centric design. It offers reliability and efficiency, making it an essential tool for anyone in the forestry and logging industries. Whether faced with the toughest cutting tasks or everyday maintenance work, the 394XP is engineered to perform at the highest level, empowering users to accomplish their work quickly and effectively.
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