Husqvarna 353 EPA I manual Sharpening cutting teeth, General advice on setting raker clearance

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SAFETY INSTRUCTIONS

4Round file diameter

5File depth

It is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.

See the Technical data section for information about sharpening your chain.

WARNING! The following faults will increase

!the risk of kickback considerably: File angle too large

Cutting angle too small

File diameter too small

Sharpening cutting teeth

To sharpen cutting teeth you will need a round file and a file gauge. See the Technical data section for information on the size of file and gauge that are recommended for the chain fitted to your chain saw.

•Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly.

•Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw over and file the teeth on the other side.

•File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (0.16") the chain is worn out and should be replaced.

General advice on setting raker clearance

•When you sharpen the cutting teeth you reduce the raker clearance (=cutting depth). To maintain optimal cutting performance you must file back the raker lip to the recommended height.

See the Technical data section to find the raker clearance for your particular 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 that you use our raker gauge to achieve the correct clearance and bevel on the raker lip.

WARNING! The risk of kickback is increased

!if the raker clearance is too large!

Setting 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.

12 – English

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Contents Operator’s manual EPA KEY to Symbols Key to symbolsContents Before using a new chain saw Please read the operator’s manual carefullySafety Instructions Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guard Stop switch Throttle lockChain catcher Right hand guardMuffler Checking brake band wearChecking the front hand guard Checking the inertia brake release Stop switch Throttle lock Chain catcher Right hand guardCutting equipment General rulesCutting equipment designed to minimise kickback BarSharpening your chain and adjusting raker clearance Some terms that describe the bar and chainGeneral information on sharpening cutting teeth General advice on setting raker clearance Setting the raker clearanceSharpening cutting teeth Tensioning the chain Lubricating cutting equipmentChain oil Filling with chain oilChecking chain lubrication Lubricating the bar tip sprocketNeedle bearing lubrication Checking wear on cutting equipmentHow to avoid kickback What is kickback?General safety precautions Fuel safety StartingTransport and storage Basic safety rules General working instructionsBasic cutting technique GeneralCutting Tree felling technique LimbingSafe distance Felling directionFelling Directional cutsGeneral advice Freeing a tree that has fallen badlyCutting the trunk into logs Freeing a trapped treeWhat is WHAT? What is what on the chain saw?Assembly Fitting the bar and chainFuel Handling FuelFollowing applies to chain saws with catalytic converters Chain oil FuellingFuel Handling Starting and Stopping Starting and stoppingCold engine Warm engineStopping Maintenance CarburettorCorrectly adjusted carburettor StarterChanging a broken or worn starter cord Tensioning the recoil springAir filter Spark plugMuffler Fitting the starterAdjustment of the oil pump Air Injection centrifugal cleaningNeedle bearing lubrication Cooling systemTemperature 0 C 32 F or colder Temperature -5C 23 F or colderHeated handles Electrical carburettor heatingDaily maintenance Weekly maintenanceMonthly maintenance Below you will find some general maintenance instructionsTechnical Data Technical dataBar Chain Length, inches Pitch, inch Max nose radius Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsEmission Control Warranty Parts List 1140204-95
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