Manual Husqvarna 450 II (page 29 of 120) (English, Portuguese, Spanish)

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(Fig. 71)

To make the directional cuts

1. Make the directional cuts ¼ of the diameter of the

tree. Make a 45°-70° angle between the top

directional cut and bottom directional cut. (Fig. 72)

a) Make the top directional cut. Align the felling

direction mark (1) of the product with the felling

direction of the tree (2). Stay behind the product

and keep the tree on your left side. Cut with a

pull stroke.

b) Make the bottom directional cut. Make sure that

the end of the bottom directional cut is at the

same point as the end of the top directional cut.

(Fig. 73)

2. Make sure that the bottom directional cut is

horizontal and at a 90° angle to the felling direction.

To use the safe corner method

The felling cut must be made slightly above the

directional cut.

(Fig. 74)

WARNING: Be careful when you cut with the

guide bar tip. Start to cut with the lower

section of the guide bar tip as you make a

bore cut into the trunk.

(Fig. 75)

1. If the usable cutting length is longer than the tree

diameter, do these steps (a-d).

a) Make a bore cut straight into the trunk to

complete the felling hinge width. (Fig. 76)

b) Cut on the pull stroke until ⅓ of the trunk is left.

c) Pull the guide bar 5-10 cm/2-4 in rearward.

d) Cut through the remaining of the trunk to

complete a safe corner that is 5-10 cm/2-4 in

wide. (Fig. 77)

2. If the usable cutting length is shorter than the tree

diameter, do these steps (a-d).

a) Make a bore cut straight into the trunk. The bore

cut must extend 3/5 of the tree diameter.

b) Cut on the pull stroke through the remaining

trunk. (Fig. 78)

c) Cut straight into the trunk from the other side of

the tree to complete the felling hinge.

d) Cut on the push stroke, until ⅓ of the trunk is left,

to complete the safe corner. (Fig. 79)

3. Put a wedge in the kerf straight from behind. (Fig.

80)

4. Cut off the corner to make the tree fall.

Note:

If the tree does not fall, hit the wedge until it

does.

5. When the tree starts to fall, use the path of retreat to

move away from the tree. Move a minimum of 5

m/15 ft away from the tree.

To free a trapped tree

WARNING: It is very dangerous to remove a

trapped tree and there is a high accident

risk. Keep out of the risk zone and do not try

to fell a trapped tree.

(Fig. 81)

The safest procedure is to use one of the following

winches:

• Tractor-mounted

(Fig. 82)

• Portable

(Fig. 83)

To cut trees and branches that are in tension

1. Figure out which side of the tree or branch that is in

tension.

2. Figure out where the point of maximum tension is.

(Fig. 84)

3. Examine which is the safest procedure to release the

tension.

Note: In some situations the only safe procedure is

to use a winch and not your product.

4. Keep a position where the tree or branch can not hit

you when the tension is released. (Fig. 85)

5. Make one or more cuts of sufficient depth necessary

to decrease the tension. Cut at or near the point of

maximum tension. Make the tree or branch break at

the point of maximum tension. (Fig. 86)

WARNING:

Do not cut straight through a

tree or branch that is in tension.

WARNING: Be very careful when you

cut a tree that is in tension. There is a

risk that the tree moves quickly before or

after you cut it. Serious injury can occur

if you are in an incorrect position or if

you cut incorrectly.

6. If you must cut across tree/branch, make 2 to 3 cuts,

1 in. apart and with a depth of 2 in. (Fig. 87)

7. Continue to cut more into the tree until the tree/

branch bends and the tension is released. (Fig. 88)

8. Cut the tree/branch from the opposite side of the

bend, after the tension is released.

1286 - 002 - 03.06.2020

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Husqvarna 450 II Manual

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