Jonsered 2116 EL manuel dutilisation Boring Cut, Step

Page 27

E N G L I S H

Basic Working Techniques

Boring Cut

A boring cut is used to fell large trees. Follow the steps listed below when performing a boring cut.

	1. Cut, using the bottom portion of the guide bar tip,
STEP 1	until the depth of the cut is equal to the width of the
STEP 1	guide bar and deep enough to stop a kickback during
	steps 2 and 3.

2. Operating at full throttle, align the saw with the direction of cut.

STEP 2

3. With saw at full throttle, press the guide bar straight into the trunk.

		STOP WARNING!
		Making a boring cut can be dangerous if improperly
	STEP 3	performed. Only properly trained operators should
	STEP 3	attempt this technique.
		attempt this technique.

26

Image 27

Contents 2116 EL Before using your new electric chain saw Safety symbolsIndex MAX Explanation of SymbolsKickback safety features Safety PrecautionsSafety precautions for electric chain saw users Kickback safety precautionsContact your Authorized Service Dealer Other Safety PrecautionsSafety Precautions for Electric Tools Power supply and extention cableDouble insulation General Safety Precautions General SafetyIntroduction Electric Chain Saw OperatorCommon Sense Clothing Personal EquipmentThrown Objects Your conditionProtective Pants or Chaps BootsComplete Protective Helmet Heavy Duty GlovesUser Explanation Technical specificationsMounting guide bar and chain Chain oilChain oil To stop Before each useStart and stop Starting upInertia activation Chain BrakeChain brake Manual activationMotor overload protection Testing and maintenance of the chain brakeBrake function test Inertia-activation function testTools and materials MaintenanceSaw maintenance Daily maintenanceRecommended cutting equipment Cutting EquipmentChain Maintenance Depth gauge SharpeningGeneral Working Instructions What is kickback ?Does a Chain Brake Work in All Situations and Positions? Chain brakeDirection of Kickback Pinch KickbackAvoiding kickbacks Proper working techniquesAvoid these situations Maintain control over workpiece Use Proper GripAvoid Unsafe Positions Use Proper SpeedAvoiding Kickback Your Equipment Small Nose Radius BarLow-Kickback Chain Basic Working Techniques General rulesReactive Forces Step Boring CutBefore Felling FellingFelling Cut Trunk Diameter Greater than Guide Bar Length Basic Rules for Felling TreesFelling Back Cut Felling Cut Trunk Diameter Less than Guide Bar LengthFelling Leaning Trees Felling Cut Trunk Diameter More than Twice Guide Bar LengthLodged Trees Some Suggestions as to How You can Take Down a Lodged TreeSimple Hang-Ups Rolling the Tree Arbrisseaux et branchages sous tension Techniques DE Travail ÉlémentairesCutting logs or wood Limbing a treeIf the saw jams Hang-UpsCrosscutting logs, pressure on bottom Cutting LogsCrosscutting/bucking Crosscutting logs, pressure on topCutting Trees or Limbs Under Tension Small Trees and Limbs Under Tension Usqvarna .ORGE !3