Husqvarna 445, 445e, 450e manual 12 3, Working Techniques, Tree felling technique

Page 26
12

WORKING TECHNIQUES

Limbing

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

Cut difficult branches piece by piece.

12

3

Cutting

WARNING! Never attempt to cut logs

! while they are in a pile or when a couple of logs are lying together. Such procedures drastically increase the risk of kickback which can result in a serious or fatal injury.

If you have a pile of logs, each log you attempt to cut should be removed from the pile, placed on a saw horse or runners and cut individually.

Remove the cut pieces from the cutting area. By leaving them in the cutting area, you increase the risk for inadvertently getting a kickback, as well as increasing the risk of losing your balance while working.

The log is lying on the ground. There is little risk of the chain jamming or the object 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. Avoid letting the chain touch the ground as you finish the cut. Maintain full throttle but be prepared for what might happen.

If it is possible (can you turn the log?) stop cutting about 2/3 of the way through the log.

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

The log is supported at one end. There is a high risk

that it will split.

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

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

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

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

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

Tree felling technique

IMPORTANT! It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. Do not attempt any task that you feel unsure of!

Safe distance

The safe distance between a tree that is to be felled and anyone else working nearby is at least 2 1/2 tree lengths. Make sure that no-one else is in this ”risk zone” before or during felling.

26 – English

115 10 81-26 Rev.2 2008-01-11

Page 25 Page 27
Image 26
Page 25 Page 27
Contents Operator′s manual 445 445e 450eSymbols in the operator’s manual KEY TO SYMBOLSSymbols on the machine CONTENTS ContentsINTRODUCTION Dear CustomerWHAT IS WHAT? What is what on the chain saw?GENERAL SAFETY PRECAUTIONS Before using a new chain sawPersonal protective equipment Machine′s safety equipmentAlways use common sense Chain brake and front hand guard8 – English Throttle lockout Vibration damping system Stop switchRight hand guard MufflerCutting equipment designed to reduce kickback Cutting equipmentGeneral rules sharpening instructions considerably General information on sharpening cutting teethWARNING! Departure from the increases the risk of kickbackAdjustment of depth gauge setting General advice on adjusting depth gauge settingincreased if the depth gauge setting is Tensioning the chain445e, 450e Chain oil Lubricating cutting equipmentwhich could lead to serious, even fatal injuries Filling with chain oilChain drive sprocket ASSEMBLY Fitting the bar and chainFitting a spike bumper FUEL HANDLING FuelTransport and storage Fuel safetyFuelling Long-termstorageSTARTING AND STOPPING Starting and stoppingStopping General working instructions WORKING TECHNIQUESBefore use 24 – English Basic cutting technique 12 3 Tree felling techniqueFelling Felling directionClearing the trunk and preparing your retreat Directional cutsFelling cut Freeing a tree that has fallen badly How to avoid kickbackWhat is kickback? Limbing WARNING! A majority of kickback General MAINTENANCECarburettor adjustment immediately Checking the inertia brake releaseChecking the brake trigger Muffler Tensioning the recoil spring StarterReplacing the starter cord Fitting the starter Air filterReplacing the return and drive springs Needle bearing lubrication Spark plugLubricating the bar tip sprocket Cooling systemTemperature -5Cor colder ”Air Injection” centrifugal cleaningWinter use Weekly maintenance Maintenance scheduleDaily maintenance Monthly maintenanceTECHNICAL DATA Technical dataLength, inch Bar and chain combinationsSaw chain filing and file gauges Pitch, inchEC-declarationof conformity Applies to Europe only´z+S,¶6c¨ ´z+S,¶6c¨ Page 1151081-26 ´z+S,¶6c¨ ´z+S,¶6c¨
Top Page Image Contents