Jonsered 2149 manual Basic cutting technique, General, Terms, Cutting, Safety Instructions

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2 Basic cutting technique

SAFETY INSTRUCTIONS

2 Basic cutting technique

General

Always use full throttle when cutting!

Reduce the speed to idle after every cut (running the engine for too long at full throttle without any load can lead to serious engine damage).

Cutting from above = Cutting on the pull stroke.

Cutting from below = Cutting on the push stroke.

See the section on ”How to avoid kickback” to find out why cutting on the push stroke increases the risk of kickback.

Terms:

Cutting

=

General term for cutting through wood.

Limbing

=

Cutting limbs off a felled tree.

Splitting

=

When the object you are cutting breaks off

 

 

before the cut is complete.

There are five important factors you should consider before making a cut:

1Make sure the bar will not jam in the cut.

2Make sure the log will not split.

3Make sure the chain will not strike the ground or

any other object during or after cutting.

4Is there a risk of kick- back?

5Do the conditions and surrounding terrain affect your safety when working?

Two factors decide whether the chain will jam or the log will split. The first is how the log is supported and the second is whether it is in tension.

In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom of the log. You need to support the log so that it will not trap the chain or split during cutting.

If the chain jams in the cut:

STOP THE ENGINE! Don’t try to pull the saw free. If you do you may damage the chain when the saw suddenly breaks free. Use a lever to open up the cut and free the bar.

The following instructions describe how to handle most types of situation that you will be faced with when using a chain saw.

Cutting

1 The log is lying on the ground. There is little risk of the chain jamming or the log splitting. However there is a risk that the chain will touch the ground when you finish the cut.

Cut all the way through the log from above. Try not to touch the ground as you finish the cut. Maintain full throttle but be prepared in case the chain snatches.

A If it is possible to turn the log you should stop cutting about 2/3 of the way through.

B Turn the log and finish the cut from the opposite side.

20 – English

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Contents Operator´s manual KEY TO SYMBOLS SymbolsCONTENTS ContentsBefore using a new saw Safety instructionsPERSONAL PROTECTIVE EQUIPMENT SAFETY INSTRUCTIONSCHAIN SAW SAFETY EQUIPMENT 1 Chain brake and front hand guard 4 Right hand guard 2 Throttle lock3 Chain catcher 7 Muffler 6 Stop switch5 Vibration damping system 1Checking brake band wear 2 Checking the front hand guard3 Checking the inertia brake release 4Checking the brake triggerSAFETY INSTRUCTIONS CUTTING EQUIPMENT The 5 basic rules1Cutting equipment designed to minimise kickback A BarB Saw chain C Some terms that describe the bar and chainAGeneral information on sharpening cutting teeth B Sharpening cutting teeth3 Tensioning the chain C General advice on setting raker clearanceDSetting the raker clearance BFilling with chain oil 4 Lubricating cutting equipmentA Chain oil E Needle bearing maintenance C Checking chain lubricationFChecking wear on cutting equipment D Lubricating the bar tip sprocketH Bar HOW TO AVOID KICKBACKWhat is kickback? Never use the saw one- handed General rulesDo not let go of the handles GENERAL SAFETY PRECAUTIONS ”Technical data” section”Maintenance” Min. 3 m1 Basic safety rules GENERAL WORKING INSTRUCTIONS2 Basic cutting technique GeneralTerms Cutting3 Tree felling technique A Safe distanceLimbing B Felling directionC Clearing the trunk and preparing your retreat D FellingDIRECTIONAL CUT FELLING CUTAFreeing a “Trapped tree” E LimbingF Cutting the trunk into logs WHAT IS WHAT? What is what?ASSEMBLY Mounting guide bar and chainFUEL HANDLING FuelmixGasoline Two-strokeoilFuelling Chain oilMin 3 m 10ftSTART AND STOP Start and stopStart StopMAINTENANCE Functioning, Basic setting, Final settingBasic setting and running in Fine adjustmentStarter device assembly Starter deviceChanging a broken or worn starter cord Tensioning the recoil springNeedle bearing maintenance Air filterMuffler Spark plugAdjustment of the oil pump Centrifugal cleaning ”Turbo”Heated handles 2149W Cooling systemMonthly maintenance Weekly maintenanceDaily maintenance TECHNICAL DATA Weight34´*xnG¶5g¨ 2149EMISSION CONTROL WARRANTY STATEMENT MANUFACTURER’S WARRANTY COVERAGEOWNER’S WARRANTY RESPONSIBILITIES WARRANTY COMMENCEMENT DATE2000W51 ´*xnG¶5g¨108