Makita DCS 520i Service Manual download pdf (Page 13)

Begin the felling cut slighty higher than the felling

notch and on the opposite side

the tree (fig.

22).

Then cut horizontally through towards the felling notch.

Apply the chain saw with its spikes directly behind the

uncut portion of wood and cut toward the notch (fig.

23).

Leave approximately

1/10

of the tree diameter

uncut! This is the hinge

(fig.

23).

not cut through the

hinge because you could lose control of the direction

of the fall. Drive wedges into the felling cut where

necessary to control the direction

the fall. Wedges

should be

wood, light alloy or plastic

never of steel,

which can cause kickback and damage to the chain.

Always keep to the side of the falling tree. When the

tree starts to fall, shut

off

the engine, withdraw the bar

and walk away on the pre-planned escape path.

Watch out for falling limbs.

WARNING!

Be ememelycarefulwith partially fallen trees which

are poorly supported.

When the tree hangs or for some other reason does

not

fall

completely, set the

saw

aside and pull the

tree down with a cable winch,

block

and tackle or

Sectioning Method

length

the guide bar requires use of either the

sectioning

or plunge-cut method. These methods

are extremely dangerous because they involve the

use

the

nose

the guide bar

and

can

result

kickback. Only property traine

For the sectioning method (fig.

24)

make the first cut

with the guide bar fanning in toward the hinge. Then,

using the bumper spike as a pivot, reposition the saw

for the next cut. Avoid repositioning the saw more than

necessary. When repositioning for the next cut, keep

the guide bar fully engaged in the kerf to keep the

felling cut straight. If the saw begins

pinch, insert a

wedge

open the cut. On the last cut, do not cut

the hinge.

Plunge-Cut Method

Timber having

diameter more than twice the length

the guide bar reauires the use of the plunge-cut

method before making the felling cut.

First, cut a large, wide notch. Make a plunge cut in the

center of the notch.

The plunge cut is made with the guide bar nose. Begin

the plunge cut by applying the lower portion of the

guide bar nose

the tree at an angle (fig.

25).

Cut until

depth of the kerf is about the same as the width of the

guide bar (fig.

26).

Next, align the saw in the direction

in which the recess is to be cut. With the saw at full

throttle, insert the guide bar in the trunk (fig.

27).

Enlarge the plunge cut as shown in illustration (fig.

28)

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Makita DCS 520i Service Manual Page 13

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