Bedienungsanleitung Husqvarna 445e TrioBrake (Seite 15 von 36) (Englisch)

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GENERAL SAFETY PRECAUTIONS

English – 15

1153159-26 Rev.1 2009-12-29

Check the chain tension every time you refuel. NOTE! A

new chain has a running-in period during which you

should check the tension more frequently.

Tension the chain as tightly as possible, but not so tight

that you cannot pull it round freely by hand.

(26)

• Release the knob by folding it out. (30)

• Turn the knob anti clockwise to loosen the bar cover.

(31)

• Adjust the tension on the chain by turning the wheel

down (+) for tighter tension and up (-) to loosen the

tension.

(32)

• Tighten the bar clutch by turning the knob clockwise.

(33)

• Fold the knob back in to lock the tensioning. (34)

Lubricating cutting equipment

Chain oil

Chain oil must demonstrate good adhesion to the chain

and also maintain its ﬂow characteristics regardless of

whether it is warm summer or cold winter weather.

As a chain saw manufacturer we have developed an

optimal chain oil which, with its vegetable oil base, is also

biodegradable. We recommend the use of our own oil for

both maximum chain life and to minimise environmental

damage. If our own chain oil is not available, standard

chain oil is recommended.

Never use waste oil! Using waste oil can be dangerous

to you and damage the machine and environment.

Filling with chain oil

• All our chain saws have an automatic chain lubrication

system. On some models the oil ﬂow is also

adjustable.

• The saw chain oil tank and the fuel tank are designed

so that the fuel runs out before the saw chain oil.

However, this safety feature requires that you use the

right sort of chain oil (if the oil is too thin it will run out

before the fuel), and that you adjust the carburetor as

recommended (a lean mixture may mean that the fuel

lasts longer than the oil) and that you also use the

recommended cutting equipment (a bar that is too

long will use more chain oil).

Checking chain lubrication

• Check the chain lubrication each time you refuel. See

instructions under the heading Lubricating the bar tip

sprocket.

Aim the tip of the bar at a light coloured surface about

20 cm (8 inches) away. After 1 minute running at 3/4

throttle you should see a distinct line of oil on the light

surface.

If the chain lubrication is not working:

• Check that the oil channel in the bar is not obstructed.

Clean if necessary.

(35)

• Check that the groove in the edge of the bar is clean.

Clean if necessary.

(36)

• Check that the bar tip sprocket turns freely and that

the lubricating hole in the tip sprocket is not blocked.

Clean and lubricate if necessary.

(37)

If the chain lubrication system is still not working after

carrying out the above checks and associated measures

you should contact your service agent.

Chain drive sprocket

The clutch drum is ﬁtted with one of the following drive

sprockets:

A Spur sprocket (the chain sprocket is welded on the

drum)

B Rim sprocket (replaceable) (38)

Regularly check the degree of wear on the drive sprocket.

Replace if wear is excessive. Replace the drive sprocket

whenever you replace the chain.

Needle bearing lubrication

Both versions of sprockets have a needle bearing on the

drive shaft, which has to be greased regularly (once a

week). CAUTION! Use a high-quality bearing grease or

engine oil.

See instructions under the heading Maintenance, Needle

bearing lubrication.

WARNING! Poor lubrication of cutting

equipment may cause the chain to snap,

which could lead to serious, even fatal

injuries.

IMPORTANT! When using vegetable based saw chain

oil, dismantle and clean the groove in the bar and saw

chain before long-term storage. Otherwise there is a risk

of the saw chain oil oxidizing, which will result in the saw

chain becoming stiff and the bar tip sprocket jamming.

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