Husqvarna 550XP, 545 Lubricating the bar tip sprocket, Needle bearing lubrication, Cooling system

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MAINTENANCE

Lubricating the bar tip sprocket

Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease.

Needle bearing lubrication

The clutch drum has a needle bearing on the output shaft. This needle bearing must be lubricated regularly (once a week).

When lubricating, remove the clutch cover by loosening the two bar nuts. Lay the saw on its side with the clutch drum upwards.

Lubrication involves grease being squirted into the centre of the crankshaft using a grease gun.

Adjustment of the oil pump.

The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory with the screw set to middle position. Turning the screw clockwise will reduce the oil ﬂow and turning the screw anti-clockwise will increase the oil ﬂow.

+ –

Recommended settings:

Bar 13"-15": Minimum ﬂow

Bar 16”-18”: Medium ﬂow

Bar -20": Maximum ﬂow

	!	WARNING! The engine must not be
	!	running when making adjustments.
		running when making adjustments.

Cooling system

To keep the working temperature as low as possible the machine is equipped with a cooling system.

The cooling system consists of:

1Air intake on the starter.

2Air guide plate.

3Fins on the ﬂywheel.

4Cooling ﬁns on the cylinder.

5Cylinder cover (directs cold air over the cylinder).

Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder.

Note! The cooling system on a chain saw with catalytic converter must be cleaned daily. This is particularly important on chain saws with catalytic converters, because the higher exhaust temperature requires efﬁcient cooling of the engine and the catalytic converter unit.

34 – English

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Contents Operator′s manual Symbols on the machine KEY to SymbolsDecompression valve Symbols in the operator’s manual Contents Introduction 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 guardGeneral Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMufﬂer Stop switchCutting equipment General rulesCutting equipment designed to reduce kickback Sharpening your chain and adjusting depth gauge setting Lubricating cutting equipment Adjustment of depth gauge settingTensioning the chain Cause serious or even fatal injuryChain drive sprocket Filling with chain oilChecking chain lubrication Needle bearing lubricationChecking wear on cutting equipment Fitting a spike bumper AssemblyFitting the bar and chain Working with the chainFuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageStarting Starting and StoppingStarting and stopping Cold engineStopping Before use Basic safety rulesWorking Techniques General working instructionsWorking Techniques Terms Basic cutting techniqueLimbing Safe distance Tree felling techniqueFelling direction Felling Training we advise you not to fell trees Clearing the trunk and preparing your retreatFelling cut Your sawFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Carburettor adjustment MaintenanceGeneral Checking the brake trigger Checking the inertia brake releaseImmediately Mufﬂer Changing a broken or worn starter cord StarterTensioning the recoil spring Changing a broken recoil spring Air ﬁlterSpark plug Fitting the starterLubricating the bar tip sprocket Adjustment of the oil pumpRunning when making adjustments Needle bearing lubricationWinter use Air Injection centrifugal cleaningTemperature 0C or colder Heated handlesMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical data550XP TrioBrake 550XPG Guide bar and chain combinations Saw chain ﬁling and ﬁle gaugesApplies to Europe only EC-declaration of conformityEN ISO 12100-2/A12009, Cispr 122007, EN ISO Page Page