Husqvarna 49 manual Cutting equipment designed to minimise kickback, Bar, Saw chain

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SAFETY INSTRUCTIONS

1Cutting equipment designed to minimise kickback

!Faulty cutting equipment or the wrong combination of bar and chain increases the risk of kickback. Use only the bar and chain combinations recommended in the ”Technical data” section.

The only way to avoid kickback is to make sure that the kick- back zone of the bar never touches anything.

By using cutting equipment with “built-in” kickback protection and keeping the chain sharp and well-maintained you can reduce the effects of kickback.

A Bar

The smaller the tip radius the smaller the kickback zone and the lower the chance of kickback.

B Saw chain

A saw chain is made up of a number of links, which are available in standard and low-kickback versions.

None

Standard Low-kickback

CUTTING LINK

DRIVE LINK

SIDE LINK

Combining these links in different ways gives different degrees of kickback reduction. In terms of kickback reduction alone, four different types of link are available.

Kickback reduction

Cutting link

Drive link

Side link

LOW

STANDARD

HIGH

EXTRA HIGH

CSome terms that describe the bar and chain

When the cutting equipment supplied with your saw becomes worn or damaged you will need to replace it. Use only the type of bar and chain recommended by us. See the ”Technical data” section to find out which equipment is recommended for your saw.

Bar

• LENGTH (inches/cm)

• NUMBER OF TEETH ON BAR TIP SPROCKET (T). Small number = small tip radius = low-kickback

•CHAIN PITCH (inches) The spacing between the drive links of the chain must match the spacing of the

teeth on the bar tip sprocket and drive sprocket.

•NUMBER OF DRIVE LINKS The number of drive links is determined by the length of

the bar, the chain pitch and the number of teeth on the bar tip sprocket.

• BAR GROOVE WIDTH (inches/mm)

The groove in the bar must match the width of the chain drive links.

•SAW CHAIN OIL HOLE AND HOLE FOR CHAIN

TENSIONER

The bar must be matched to the chain saw design.

Saw chain

• SAW CHAIN PITCH (inches)

Spacing between drive links.

• DRIVE LINK WIDTH (mm/ inches)

• NUMBER OF DRIVE LINKS

• LEVEL OF KICKBACK REDUCTION

The level of kickback reduction offered by a chain is indicated by its model number.

See the ”Technical data” section to find the model numbers of chains that are recommended for use with your saw.

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Contents 101 90 45/49Symbols KEY to SymbolsContents Personal Protective Equipment Safety InstructionsChain SAW Safety Equipment Chain brake and front hand guard Right hand guard Throttle lockChain catcher Muffler Stop switchVibration damping system Checking the brake trigger Checking brake band wearChecking the front hand guard Checking the automatic brakeThrottle lock 5 basic rules Cutting EquipmentSome terms that describe the bar and chain Cutting equipment designed to minimise kickbackBar Saw chainSharpening cutting teeth Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth Tensioning the chain General advice on setting raker clearanceSetting the raker clearance Filling with chain oil Lubricating cutting equipmentChain oil Lubricating the bar tip sprocket Checking chain lubricationLubricating the clutch drum bearing Checking wear on cutting equipmentWhat is kickback? HOW to Avoid KickbackDo not let go of the handles General rules10 ft General Safety PrecautionsMin m General Working Instructions Basic safety rulesCutting Basic cutting techniqueGeneral TermsFelling direction Tree felling techniqueSafe distance LimbingFelling Clearing the trunk and preparing your retreatCutting trees and branches that are in tension Preparations Freeing a tree that has fallen badly = high accident riskCutting the trunk into logs Freeing a Trapped treeWhat is WHAT? Mounting guide bar and chain AssemblyFuelmix Fuel Handling10ft FuellingMin 3 m Start Start and StopCold engine Warm engineCarburetor MaintenanceTensioning the recoil spring Starter device assemblyStarter device Changing a broken or worn starter cordSpark plug Needle bearing maintenanceAir filter MufflerCooling system Daily maintenanceCentrifugal cleaning Air Injection Weekly maintenance Monthly maintenance Technical Data Your Warranty Rights Obligations Federal Emission Control Warranty Statement1998W48
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