Jonsered 2149 manual Tree felling technique, A Safe distance, Limbing, B Felling direction

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3 Tree felling technique

SAFETY INSTRUCTIONS

2 The log is supported at one end. There is a high risk that it will split.

AStart by cutting from below (about 1/3 of the way through).

BFinish by cutting from above so that the two cuts meet.

3 Tree felling technique

It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. NEVER ATTEMPT A TASK YOU ARE UNSURE OF.

A Safe distance

The safe distance between a tree that is to be felled and anyone else working nearby is at least 21/2 tree lengths.

Make sure that no-one else is in this “risk zone” before or during felling.

3 The log is supported at both ends. There is a high risk that the chain will jam.

AStart by cutting from above (about 1/3 of the way through).

BFinish by cutting from below so that the two cuts meet.

Limbing

When limbing thick branches you should use the same approach as for cutting.

Cut difficult branches piece by piece.

1

2

 

 

3

B Felling direction

The aim is to fell the tree in the best possible position for subsequent limbing and cross-cutting. You want it to fall on ground where you can move about safely.

The main point to avoid is letting the tree fall onto another tree. It can be both difficult and dangerous to remove a tree in such a position (see point 4 in this section).

Once you have decided which way you want the tree to fall you must judge which way the tree would fall naturally.

Several factors affect this:

Lean of the tree

Bend

Wind direction

Arrangement of branches

Weight of snow

You may find you are forced to let the tree fall in its natural direction because it is impossible or dangerous to try to make it fall in the direction you first intended.

Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling.

During critical felling operations, hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.

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Contents Operator´s manual Symbols KEY TO SYMBOLSContents CONTENTSBefore using a new saw Safety instructionsSAFETY INSTRUCTIONS CHAIN SAW SAFETY EQUIPMENTPERSONAL PROTECTIVE EQUIPMENT 1 Chain brake and front hand guard 2 Throttle lock 3 Chain catcher4 Right hand guard 6 Stop switch 5 Vibration damping system7 Muffler 2 Checking the front hand guard 1Checking brake band wear3 Checking the inertia brake release 4Checking the brake trigger6 Stop switch The 5 basic rules CUTTING EQUIPMENTA Bar 1Cutting equipment designed to minimise kickbackB Saw chain C Some terms that describe the bar and chainB Sharpening cutting teeth AGeneral information on sharpening cutting teethC General advice on setting raker clearance DSetting the raker clearance3 Tensioning the chain 4 Lubricating cutting equipment A Chain oilBFilling with chain oil C Checking chain lubrication E Needle bearing maintenanceFChecking wear on cutting equipment D Lubricating the bar tip sprocketHOW TO AVOID KICKBACK What is kickback?H Bar General rules Do not let go of the handlesNever use the saw one- handed ”Technical data” section GENERAL SAFETY PRECAUTIONS”Maintenance” Min. 3 mGENERAL WORKING INSTRUCTIONS 1 Basic safety rulesGeneral 2 Basic cutting techniqueTerms CuttingA Safe distance 3 Tree felling techniqueLimbing B Felling directionD Felling C Clearing the trunk and preparing your retreatDIRECTIONAL CUT FELLING CUTE Limbing F Cutting the trunk into logsAFreeing a “Trapped tree” What is what? WHAT IS WHAT?Mounting guide bar and chain ASSEMBLYFuelmix FUEL HANDLINGGasoline Two-strokeoilChain oil FuellingMin 3 m 10ftStart and stop START AND STOPStart StopFunctioning, Basic setting, Final setting MAINTENANCEBasic setting and running in Fine adjustmentStarter device Starter device assemblyChanging a broken or worn starter cord Tensioning the recoil springAir filter Needle bearing maintenanceMuffler Spark plugCentrifugal cleaning ”Turbo” Adjustment of the oil pumpHeated handles 2149W Cooling systemWeekly maintenance Daily maintenanceMonthly maintenance Weight TECHNICAL DATA34´*xnG¶5g¨ 2149MANUFACTURER’S WARRANTY COVERAGE EMISSION CONTROL WARRANTY STATEMENTOWNER’S WARRANTY RESPONSIBILITIES WARRANTY COMMENCEMENT DATE´*xnG¶5g¨ 1082000W51