Husqvarna 339XP manual Tensioning the chain, General advice on setting raker clearance

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SAFETY INSTRUCTIONS

C General advice on setting raker clearance

•When you sharpen the cutting teeth you reduce the

RAKER CLEARANCE (cutting depth). To maintain cutting performance you must file back the raker teeth to the recommended height.

See the ”Technical data” section to find the raker clearance for your saw chain.

•On a low-kickback cutting link the front edge of the raker lip is rounded. It is very important that you maintain this radius or bevel when you adjust the raker clearance.

•We recommend the use of a raker gauge to achieve the correct clearance and bevel on the raker lip.

!The risk of kickback is increased if the raker clearance is too large!

DSetting the raker clearance

•Before setting the raker clearance the cutting teeth should be newly sharpened.

We recommend that you adjust the raker clearance every third time you sharpen the chain. NOTE! This recommendation assumes that the length of the cutting teeth is not reduced excessively.

• To adjust the raker clearance you will need a FLAT FILE and a RAKER GAUGE.

• Place the gauge over the raker lip.

•Place the file over the part of the lip that protrudes through the gauge and file

off the excess. The clearance is correct when you no longer feel any resistance as you draw the file over the gauge.

3Tensioning the chain

!A slack chain may jump off and cause serious or even fatal injury.

•The more you use a chain the longer it becomes. It is therefore important to adjust the chain regularly to take up the slack.

•Check the chain tension every time you refuel.

NOTE! A new saw chain has a running-in period during which you should check the tension more frequently.

•Tension the chain as tightly

as possible, but not so tight that you cannot pull it round freely by hand.

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Contents English 336Symbols KEY to SymbolsContents Chain SAW Safety Equipment Safety InstructionsPersonal Protective Equipment 3a Starting Chain brake and front hand guardChain catcher Throttle lockRight hand guard Vibration damping system Stop switchMuffler Checking the front hand guard Checking brake band wearChecking the inertia brake release Checking the brake triggerThrottle lock 5 basic rules Cutting EquipmentBar Cutting equipment designed to minimise kickbackSaw chain Some terms that describe the bar and chainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting raker clearanceSharpening cutting teeth Setting the raker clearance General advice on setting raker clearanceTensioning the chain Chain oil Lubricating cutting equipmentFilling with chain oil Chain drive sprocket Lubricating the bar tip sprocketWhat is kickback? HOW to Avoid KickbackDo not let go of the handles General rulesMin m General Safety Precautions10 ft General Working Instructions Basic safety rulesGeneral Basic cutting techniqueTerms CuttingSafe distance Tree felling techniqueLimbing Felling directionFelling Clearing the trunk and preparing your retreatCutting the trunk into logs Freeing a tree that has fallen badly = high accident riskFreeing a Trapped tree Cutting trees and branches that are in tension PreparationsWhat is WHAT? Mounting guide bar and chain AssemblyFuelmix Fuel HandlingGasoline Two-stroke oilChain oil FuellingMin 3 m 10ftStart Start and StopStop Carburetor MaintenanceStarter device Starter device assemblyChanging a broken or worn starter cord Tensioning the recoil springAir filter Adjustment of the oil pumpSpark plug MufflerCooling system Daily maintenanceLong-term storage Weekly maintenance Monthly maintenance 336 Technical DataYour Warranty Rights Obligations Emission Control Warranty Statement2003W07 114 01
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