Bedienungsanleitung Makita DUC353 (Seite 15 von 128) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Türkisch)

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15 ENGLISH

Observe local regulations if you wish to fell a tree.

►Fig.28: 1. Felling area

— Beforestartingfellingwork,ensurethat:

• Onlypersonsinvolvedinthefellingoperation

areinthevicinity;

• Anypersoninvolvedhasanunhinderedpath

of retreat through a range of approximately

45° either side of the felling axis. Consider

the additional risk of tripping over electrical

cables;

• Thebaseofthetrunkisfreeofforeign

objects,rootsandranches;

• Nopersonsorobjectsarepresentovera

distance of 2 1/2 tree lengths in the direction

in which the tree will fall.

— Considerthefollowingwithrespecttoeachtree:

• Directionoflean;

• Looseordrybranches;

• Heightofthetree;

• Naturaloverhang;

• Whetherornotthetreeisrotten.

— Consider the wind speed and direction. Do not

carry out felling work if the wind is gusting strongly.

— Trimmingofrootswellings:Beginwiththelargest

swellings.Maketheverticalcutrst,thenthe

horizontal cut.

— Stand to the side of the falling tree. Keep an area

clear to the rear of the falling tree up to an angle of

45° either side of the tree axis (refer to the “felling

area”gure).Payattentiontofallingbranches.

— Anescapepathshouldbeplannedandcleared

as necessary before cuts are started. The escape

path should extend back and diagonally to the rear

oftheexpectedlineoffallasillustratedingure.

►Fig.29: 1. Felling direction 2. Danger zone

3.Escaperoute

Whenfellingtrees,followtheproceduersbelow:

1. Cut a scarf as close to the ground as possible.

First make the horizontal cut to a depth of 1/5 -1/3 of the

trunk diameter. Do not make the scarf too large. Then

make the diagonal cut.

►Fig.30

NOTE: The scarf determines the direction in which

the tree will fall, and guides it. It is made on the side

towards which the tree is to fall.

2. Make the back cut a little higher than the base

cut of the scarf. The back cut must be exactly horizon-

tal. Leave approximately 1/10 of the trunk diameter

betweenthebackcutandthescarf.Thewoodbersin

the uncut trunk portion act as a hinge. Insert wedges

into the back cut in time.

►Fig.31

WARNING: Do not cut right through the bers

under any circumstances. The tree will otherwise

fall unchecked.

NOTICE: Only plastic or aluminum wedges may

be used to keep the back cut open. The use of

iron wedges is prohibited.

Carrying tool

Before carrying the tool, always apply the chain brake

and remove the battery cartridges from the tool. Then

attachtheguidebarcover.Alsocoverthebatterycar-

tridge with the battery cover.

►Fig.32: 1. Guide bar cover 2. Battery cover

MAINTENANCE

CAUTION: Always be sure that the tool is

switched off and the battery cartridge is removed

before attempting to perform inspection or

maintenance.

CAUTION: Always wear gloves when perform-

ing any inspection or maintenance.

NOTICE: Never use gasoline, benzine, thinner,

alcohol or the like. Discoloration, deformation or

cracks may result.

Sharpening the saw chain

Sharpen the saw chain when:

• Mealysawdustisproducedwhendampwoodis

cut;

• Thechainpenetratesthewoodwithdifculty,even

whenheavypressureisapplied;

• Thecuttingedgeisobviouslydamaged;

• Thesawpullstotheleftorrightinthewood.

(caused by uneven sharpening of the saw chain or

damage to one side only)

Sharpen the saw chain frequently but a little each time.

Twoorthreestrokeswithaleareusuallysufcientfor

routineresharpening.Whenthesawchainhasbeen

resharpened several times, have it sharpened in our

authorized service center.

Sharpening criteria:

WARNING: An excessive distance between

the cutting edge and depth gauge increases the

risk of kickback.

►Fig.33: 1. Cutter length 2. Distance between cutting

edge and depth gauge 3. Minimum cutter

length (3 mm)

— Allcutterlengthmustbeequal.Differentcutter

lengths prevent the saw chain from running

smoothly and may cause the saw chain to break.

— Do not sharpen the chain when the cutter length

has reached 3 mm or shorter. The chain must be

replaced with new one.

— The chip thickness is determined by the distance

between the depth gauge (round nose) and the

cutting edge.

— The best cutting results are obtained with following

distance between cutting edge and depth gauge.

• Chainblade90PX:0.65mm(0.025″)

• Chainblade91PX:0.65mm(0.025″)

►Fig.34

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