Mcculloch MCM2013 Bedienungsanleitung PDF herunterladen (Seite 9)

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5 - GENERAL CUTTING INSTRUCTIONS

Never saw completely through the trunk. Always leave a

hinge. The hinge guides the tree. If the trunk is completely

cut through, control over the felling direction is lost.

Insert a wedge or felling lever in the cut well before the tree

becomes unstable and starts to move. This will prevent the

guide bar from binding in the felling cut if you have mis-

judged the falling direction. Make sure no bystanders have

entered the range of the falling tree before you push it over.

WARNING

Before making the final cut, always recheck the area for

bystanders, animals or obstacles.

FELLING CUT:

1. Use wooden or plastic wedges (G) to prevent binding

the bar or chain (H) in the cut. Wedges also control

felling (Figure 5-2C).

2. When diameter of wood being cut is greater than the

bar length, make 2 cuts as shown (Figure 5-2D).

WARNING

As the f

elling cut gets close to the hinge, the tree should

begin to fall. When tree begins to fall, remove saw from cut,

stop engine, put chain saw down, and leave area along

retreat path (Figure 5-2A).

5-3. LIMBING

Limbing a tree is the process of removing the branches

from a fallen tree. Do not remove supporting limbs (A) until

after the log is bucked (cut) into lengths (Figure 5-3A).

Branches under tension should be cut from the bottom up

to avoid binding the chain saw.

WARNING

Never cut tree limbs while standing on tree trunk.

5-4. BUCKING

Buc

king is cutting a f

allen log into lengths. Make sure you

have a good footing and stand uphill of the log when cutting

on sloping g

round. If possible, the log should be supported

so that the end to be cut off is not resting on the g

round.

the log is supported at both ends and you must cut in the

middle

, make a downward cut halfway through the log and

then mak

e the undercut.

This will pre

ent the log from

pinching the bar and chain. Be careful that the chain does

not cut into the g

round when bucking as this causes rapid

dulling of the chain.

When bucking on a slope, always stand on the uphill side.

1. Log supported along entire length: Cut from top (over-

k), being careful to a

oid cutting into the ground

(Figure 5-4A).

2. Log supported on 1 end: First, cut from bottom (under-

k) 1/3 diameter of log to a

oid splintering. Second,

cut from above (overbuck) to meet first cut and avoid

pinching (Figure 5-4B).

5 - GENERAL CUTTING INSTRUCTIONS

3. Log supported on both ends: First, overbuck 1/3 diam-

eter of log to avoid splintering. Second, underbuck to

meet first cut and avoid pinching (Figure 5-4C).

TE:

The best w

ay to hold a log while bucking is to use a

sawhorse. When this is not possible, the log should be

raised and supported by the limb stumps or by using sup-

porting logs. Be sure the log being cut is securely support-

ed.

5-5.BUCKING USING A SAWHORSE

For personal safety and ease of cutting, the correct position

for vertical bucking is essential (Figure 5-5A).

VERTICAL CUTTING:

Hold the sa

w fir

mly with both hands and k

eep the sa

to the right of your body while cutting.

B. Keep the left arm as straight as possible.

eep w

eight on both f

eet.

CAUTION

While the sa

w is cutting, be sure the chain and bar are

being properly lubricated.

5-2B

5-2D

5-3A

5-4A

5-4B

5-4C

5-5A

5-2C

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