Bedienungsanleitung Solo 640 (Seite 21 von 72) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch)

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– Step away as soon as the tree starts to fall. Observe the tree

crown and wait out the whipping of the tree crown. Never

continue to work under tangled branches or tree trunks.

BUCKING

Safety

- Position bucking spike firmly against tree trunk.

- Ensure firm and safe footing

Preparation (fig. 25)

- Before proceeding with the cut, clear work site of all foreign

objects such as sand, stones, nails etc. Such objects can cause

dangerous kick-back when struck.

– Ensure secure cutting support when cutting timber (preferable

a saw buck). Wood should never be held down by foot or by

another person.

– Wedge round logs to stop them from turning while cutting.

When cutting timber under tension or stress, always:

First make a relief cut into the pressure side. Exercise caution

because of possible bar pinching.

2. Next, carefully proceed with the cut into the tension side.

Note: Position cuts sideways when large logs are under strong

tension.

Fig. 26A = Trunk top under tension.

Danger: tree will arc upwards!

Fig. 26B = Trunk underside under tension.

Danger: Tree will slam downwards.

Fig. 26C = Large trunks and strong tension.

Danger: Trunk kicks away with immense speed and

power. Watch out for the root ball which may fall

backwards.

Fig. 26D = Trunk is under tension to the side.

Danger: Tree breaks out sideways

1 = Pressure Side

2 = Tension Side

Note: If trunk is under sideways tension, always position yourself

on the pressure side. Avoid pinching of the chain saw.

To avoid the wood splitting, make a relief cut. Make this cut

opposite the tension side, then finish by cutting from the tension

side (fig. 27).

If the saw is pinched in the cut, immediately shut off engine.

Move the position of the log or trunk with a pole or lever to

open cut and free the saw.

LIMBING

Basic Rules

The danger of kick-back is most prevalent during limbing.

- When limbing, rest your chain saw on the log as much as

possible. Do not cut with the bar nose – there is danger of kick-

back (fig. 28).

– Look out for branches under tension. Do not under cut free

hanging branches.

– Do not stand on the log while limbing.

– Remove any branches which pose an obstacle.

– Try not to be nervous or feel rushed while cutting.

– Use all opportunities to create favorable and elevated work

conditions (saw buck, work bench etc.).

– Always hold thumb of left hand under the handle bar.

When you change your position, always keep the

guide bar on the side of the tree opposite you

(fig. 29).

Always watch out for any movement of the trunk and the

branches be alert and cautious at all times.

When limbing strong deciduous wood, adhere to the following

operational sequence to avoid pinching of the saw:

1. Remove obstructing branches.

2. Cut off branches which are the cause of tension.

3. Cut main branch and watch pressure side 1 and tension side 2

(fig.30) (see section on ”limbing” – fig. 27).

SAFETY DURING START-UP OPERATIONS

- Ensure there are no children or other persons within the work

area. Also watch out for animals (fig.31).

- Start a chain saw only after it has been completely and correctly

assembled. As a rule, a chain saw should always be completely

assembled before being used!

- The bar cover (scabbard) must be removed first.

- Start the chain saw at a distance of at least 3 meters from where

the saw was fueled.

- Ensure safe and firm footing before starting the saw.

- When starting, support and hold the saw firmly. Ensure that

bar and chain are not within reach of any obstructions

(fig. 33 + 34).

Warning! The chain will run for some time after the

throttle is released to idle position. (idling effect).

STARTING

Cold engine starts (fig. 35)

Move ignition switch to position ‘I’ (A).

1. Pump fuel primer until it is

visibly filled with fuel and

resistance can be felt. (C).

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Solo 640 Seite 21

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