Husqvarna 250PS manual Checking wear on cutting equipment, Saw chain Chain drive wheel

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SAFETY INSTRUCTIONS

B. Procedure if the lubrication does not function:

1. Check that the oil channel in the bar is not obstructed. Clean if necessary.

2.Check that the groove in the edge of the bar is

clean. Clean if necessary.

3.Check that the bar tip sprocket turns freely.

If the chain lubrication system is still not working after carrying out the above measures you should contact your service agent.

Checking wear on cutting equipment

A. Saw chain

B. Chain drive wheel

Check regularly the degree of wear on the drive wheel. Change if it is irregularly worn.

The chain drive wheel should be changed each time the chain is changed.

C. Guide bar

Check regularly:

Whether there are burrs

 

on the edges of the bar.

 

Remove these with a file

 

if necessary.

Whether the groove in

 

the bar has become badly

 

worn. Replace the bar if

 

necessary.

Check the saw chain daily for:

Visible cracks in rivets and links.

Whether the chain is stiff.

Whether rivets and links are badly worn.

Use a new chain to compare the wear on the old one.

When the length of the cutting teeth has worn down to only 4 mm the chain must be replaced.

min 4 mm

(0,16")

• Whether the tip of the

bar is uneven or badly

worn. If a hollow forms

on one side of the bar tip

this is due to a slack

chain.

To prolong the life of the bar you should turn it over daily.

!WARNING!

Defective cutting equipment can increase the risk for accidents.

English – 11

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Contents 250PS Symbols KEY to SymbolsContents Personal protective equipment Safety InstructionsMachines safety equipment Cutting equip- ment Vibration damp- ing systemSilencer Safety Instructions Saw chain Cutting equipment designed to minimise kickbackCutting equipment Guide barGeneral information on sharpening cutting teeth Specification of blade and chainSharpening cutting tooth General advice on setting raker clearanceChecking Tensioning the saw chainChain lubrication Correction of raker clearanceSaw chain Chain drive wheel Procedure if the lubrication does not functionChecking wear on cutting equipment Start General safety instructionsFuel safety Transport and storage Basic safety precautionsGeneral working instructions Basic clearing techniques What is what? What is WHAT?Adapter AssemblyFuelling Fuel HandlingFuel mix Start and stop Fuel Handling Start and StopRemoving the harness Start and StopConnection of the engine unit Fitting the harnessCarburettor MaintenanceMuffler Correctly adjusted carburettorCleaning/change Air filterDaily maintenance Maintenance scheduleCleaning of the shaft Adjustment of the ball jointMonthly maintenance Weekly maintenanceTechnical data Technical DataBar Chain Bar and chain combinations´+HÆh¶6v¨ English English2001W14