Husqvarna 136, 141 Important Points, Tree Felling Techniques, Felling Large Trees

wristagainstthehandguardwithoutreleas- ingyour griparoundthefronthandle.The chainshouldstopimmediately.

Inertia activating function control

_k, WARNING: When performing the fol-

lowing procedure, the engine must be turned off.

IMPORTANT POINTS

•Check chain tension before first use and

after 1 minute of operation. See CHAIN TENSION in the ASSEMBLY section.

•Cut wood only. Do not cut metal, plastics, masonry, non-wocd building materials, etc.

•Stop the saw if the chain strikes a foreign object. Inspect the saw and repair parts as necessary.

•Keepthechainoutofdirtandsand. Evena small amountofdirt will quickly dull a chain and increase the possibility of kickback.

•Practice cutting a few small logs using the following techniques to get the "feel" of us- ing your saw before you begin a major sawing operation.

•Squeeze the throttle trigger and allow the engine to reach full speed before cutting.

•Begin cutting with the saw frame against the log.

•Keep the engine at full speed the en- tire time you are cutting.

•Allow the chain to cut for you. Exert only light downward pressure.

•Releasethe throttletrigger as soon as the cut is completed, allowing the en- gine to idle. If you run the saw at full throttle without a cutting load, unnec- essary wear can occur.

•To avoid losing control when cut is complete, do not put pressure on saw at end of cut.

•Stop the engine before setting the saw down after cutting.

TREE FELLING TECHNIQUES

_;IWARNING: Check for broken or

dead branches which can fall while cutting causing serious injury. Do not cut nearbuild- ings or electricalwires if you do not know the directionoftree fall, norcut at night sinceyou will not be ale to see well, nor during bad weathersuch as rain, snow, or strong winds, etc. If the tree makes contact with any utility line, the utility company should be notified immediately.

•Carefullyplan your sawingoperationin ad- vance.

•Cleartheworkarea. You needacleararea

all aroundthetreeso you can havesecure footing.

•The chain saw operator should keep on the uphill side of the terrain as the tree is likelyto rollor slidedownhillafterit is felled.

The chain brake must be checked several times daily. Hold the chain saw approximate- ly 14" (35 cm) above a stump or otherfirm ob- ject. Release your grip on the front handle and let the saw, by its own weight, rotate around the rear handle. When the tip of the bar hits the stump, the brake should activate.

• Study the natural conditions that can cause

the tree to fall in a particular direction. Natural conditions that can cause a tree to

fall in a particular direction include:

•The wind direction and speed.

•The lean of the tree. The lean of a tree might not be apparent due to uneven or

slopingterrain. Use a plumb or level to de- termine the direction of tree lean.

•Weight and branches on one side.

•Surroundingtrees and obstacles.

Look for decay and rot. Ifthetrunk is rotted,

it can snap and fall toward the operator. Check for broken or dead branches which

can fall on you while cutting.

Make sure there is enough room for the tree to fall. Maintain a distance of 2-1/2 tree lengths from the nearest person or other objects. En- gine noise can drown out a warning call.

Remove dirt, stones, loose bark, nails, sta-

ples, and wire from the tree wherecuts are to be made.

Plan a clear retreat path to the rear and diag- onal to the line of fall.

_X_z,_. Plan a clear retreat path

}.... LJ""'_- Direction of Fall

FELLING LARGE TREES

(15 cm in diameter or larger)

The notch method is used to fell large trees. A notch is cut on the side of the tree in the de-

sired direction of fall. After a felling cut is made on the opposite side of tree, the tree will tend to fall into the notch.

NOTE: If the tree has large buttress	roots,
removethem beforemakingthenotch.	If us-

ing saw to remove buttress roots, keep saw chain from contacting ground to prevent dull- ing of the chain.

NOTCH CUT AND FELLING THE TREE

•Make notch cut by cutting the top of the notch first. Cut through 1/3 of the diameter of the tree. Next complete the notch by cut- ting the bottom of the notch. See illustra- tion. Once the notch is cut remove the notch of wood from the tree.

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