Handleiding Black Decker GK1640T T5 (pagina 11 van 16) (Engels)

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To reset after the operation of the front guard/chain brake

assembly (4) follow the instructions for "How to set the chain

brake".

Note: Avoid re-starting the tool until you hear the motor

come to a complete rest.

Note: If chain brake in malfunctioning take the product to an

approved Black & Decker service centre.

If the saw chain (6) or guide bar (7) becomes jammed

u Switch the tool off.

u Disconnect the tool from the mains supply.

u Open the cut with wedges to relieve the strain on the

guide bar (7). Do not try to wrench the chainsaw free.

u Start a fresh cut.

Felling (g. H - J)

Inexperienced users should not attempt to fell trees. The

user may suffer injury or cause damage to property as a

result of failure to control the direction of fall, the tree may

splinter or damaged/dead branches may fall during cutting.

The safe distance between a tree to be felled and

bystanders, buildings and other objects is at least 2 1/2 times

the height of the tree. Any bystander, building or object

within this distance is at risk from being struck by the tree

when felled.

Before attempting to fell a tree:

u Make sure that there are no local by-laws or regulations

that would prohibit or control the felling of the tree.

u Consider all conditions that may affect the direction of fall,

including:

- The intended direction of fall.

- The natural lean of the tree.

- Any unusual heavy limb structure or decay.

- Surrounding trees and obstacles including overhead

lines and underground drains.

- The wind speed and direction.

Pre-plan a safe exit from falling trees or branches. Make sure

that the exit route is clear of obstacles that would prevent or

hinder movement. Remember that wet grass and freshly cut

bark is slippery.

u Do not attempt to fell trees where the tree diameter is

greater than the cutting length of the chainsaw.

u Cut a direction notch to determine the direction of fall.

u Make a horizontal cut to a depth of between 1/5th and

1/3rd of the diameter of the tree, perpendicular to the line

of fall at the base of the tree (fig. H).

u Make a second cut from above to intersect with the first

and make a notch of about 45°.

u Make a single horizontal felling cut from the other side 25

mm to 50 mm above the centre of the direction notch.

(fig. I). Do not cut through to the direction notch, you could

lose control of the direction of fall.

u Drive a wedge or wedges into the felling cut to open it and

drop the tree (fig. J).

Pruning trees

Make sure that there are no local by-laws or regulations that

would prohibit or control the pruning of the tree limbs.

Pruning should only be undertaken by experienced users

there is an increased risk of the saw chain pinching and kick

back.

Before pruning consideration should be given to

conditions affecting the direction of fall including:

u The length and weight of the branch to be cut.

u Any unusual heavy limb structure or decay.

u Surrounding trees and obstacles including overhead.

u The wind speed and direction.

u The branch being intertwined with other branches.

The operator should consider access to the tree limb and

the direction of fall. The tree branch is liable to swing towards

the tree trunk. In addition to the user bystanders, objects and

property below the branch will be at risk.

u To avoid splintering, make the first cut in an upward

direction to a maximum depth of one third the diameter of

the branch.

u Make the second cut downwards to meet the first.

Logging (g. K - M)

How you should cut depends on how the log is supported.

Use a saw horse whenever possible. Always start a cut with

the saw chain running and the spiked bumper (16) in contact

with the wood (g. K). To complete the cut use a pivoting

action of the spiked bumper against the wood.

When supported along its whole length:

u Make a downward cut, but avoid cutting the earth as this

will blunt your saw chain quickly.

When supported at both ends:

u First, cut one third down to avoid splintering and second,

cut again to meet the first cut.

When supported at one end:

u First cut one third up to avoid splintering and second, cut

down to prevent splintering.

When on a slope (g. L):

u Always stand on the uphill side.

When attempting to cut a log on the ground (g. L):

u Secure the workpiece using chocks or wedges. The user

or a bystander should not steady the log by sitting or

standing on it. Make sure that the saw chain does not

contact the ground.

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