Manual Solo 646 (page 17 of 26) (English)

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Using the chainsaw ; Operating and maintenance information

- 39 - ENGLISH 17

Making the felling notch:

The felling notch determines the direction in which

the tree falls and helps to control the fall. It is made

perpendicular to the fall direction with a cut through

1/5 - 1/3 of the trunk diameter. The cut should

preferably be made close to the ground.

c Start with the upper cut (roof of the felling notch).

d Then make the lower cut (bottom of the felling

notch). The lower cut should meet the upper cut

precisely.

Check the direction of fall.

If the felling notch needs to be corrected, always

re-cut it across the full width. In exceptional

cases it is also possible to slope the lower cut

upwards to obtain a more open felling notch. If

the tree is situated on a slope this gives longer

control over the fall.

e The felling cut is made higher f than the bottom

of the felling notch

d. This cut must be exactly

horizontal. In front of the felling notch around

1/10 of the trunk diameter needs to be left as a

hinge

g The hinge must not be cut through, as this could

result in loss of control over the fall of the tree.

Wedges need to be positioned in good time. The

felling cut must only be secured with plastic or

aluminium wedges, and steel wedges must never be

used.

During felling, always keep to the side of the tree.

When walking back after the felling cut has been

made, watch out for falling branches.

When working on a slope, the operator of the saw

should stand above or to the side of the trunk or tree

being worked on.

Stand back when the tree falls. Observe the crown of

the tree.

Wait for the crown to swing out.

Do not continue work under branches or trees which

have become caught.

After work Î slacken the chain tension

11. Operating and maintenance information

With modern equipment and safety-relevant

components, maintenance and repairs must only be

carried out by persons with suitable specialist

qualifications in a workshop equipped with the

necessary special tool and testing equipment. As a

result, the manufacturer recommends that all work

which is not described in these operating instructions

should be performed by a specialist workshop. The

experts have access to the training, experience and

equipment which is required in order to provide you

with the most cost-effective solution. An expert can

also offer invaluable advice.

Always follow all of the safety instructions when

performing maintenance work.

After the device has been run in for around 5

operating hours, all accessible nuts, bolts and screws

(except the carburettor adjusting screws) should be

checked for tightness and retightened as required.

It is best to store the device in a dry and safe location

with a full fuel tank. There must not be any naked

flames or similar nearby. If you plan to not use the

chainsaw for a longer period (i.e. more than four

weeks), please refer to the information in chapter

11.1 "Shutdown and storage”.

11.1 Shutdown and storage

The chainsaw should be thoroughly cleaned and

checked for damage after every use. The most

important areas are the chain brake, the cooling air

intake area, the cylinder cooling fins and the air filter.

Only use the eco-friendly cleaning agents available

from a specialist retailer. Do not use fuel to clean the

chainsaw.

The chainsaw should be stored in a dry room and

fitted with a chain guard. There must be no naked

flames or similar in the vicinity. Measures must be

taken to prevent unauthorised use of the chainsaw,

particularly by children.

If you plan to stop using the saw for more than four

weeks then you should also drain the fuel tank and

the chain lubrication oil tank in a well vented area and

clean them. Start the engine with the fuel tank empty

and run it until the carburettor is empty and the

engine goes out. Otherwise oil residue from the fuel

mixture could block the carburettor nozzles and make

subsequent starts more difficult.

Important: If you are using bio-chainsaw oil and

planning to stop using the chainsaw for at least 2

months then you should run the chainsaw for a while

with the oil tank filled with engine oil (SAE 30), so that

all residue of the bio-oil is flushed from the tank, oil

pickup hose and cutting device.

Fig. 15

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Solo 646 User Manual - German - 24 pages

Solo 646 User Manual - Dutch - 26 pages

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Solo 646 Manual

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