Husqvarna 372XPW manual Spark plug, Lubricating the bar tip sprocket, Needle bearing lubrication

Page 34

MAINTENANCE

Spark plug

The spark plug condition is influenced by:

•Incorrect carburetor adjustment.

•An incorrect fuel mixture (too much or incorrect type of oil).

•A dirty air filter.

These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.

If the machine is low on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.5 mm (0,020"). The spark plug should be replaced after about a month in operation or earlier if necessary.

Note! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder. Check that the spark plug is fitted with a suppressor.

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). CAUTION! Use only high quality bearing grease or engine oil. See instructions under the heading Cutting equipment.

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 set to 1 turn open. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

Recommended settings:

Bar -15": 1 turn from the closed position.

Bar 15" -18": 2 turns from the closed position.

Bar 18" -24": 3 turns from the closed position.

Bar 24" -: 4 turns from the closed position.

These recommendations apply to Husqvarna’s chain oil, for other chain oils increase the oil flow by one step.

WARNING! The engine must be stopped

!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).

5

4

3

2

1

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.

34 – English

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Contents 372XPW Symbols in the operator’s manual KEY to SymbolsSymbols on the machine You will find the following labels on your chain sawContents Introduction Dear customerWhat is WHAT? What is what on the chain saw?Before using a new chain saw General Safety PrecautionsAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard General Safety Precautions Chain catcher Throttle lockRight hand guard Vibration damping system Stop switchCutting equipment MufflerChain Cutting equipment designed to reduce kickbackBar Some terms that describe the bar and chainSharpening cutting teeth Sharpening your chain and adjusting depth gauge settingGeneral information on sharpening cutting teeth Instructions considerably increases the risk of kickbackIf the depth gauge setting is too large General advice on adjusting depth gauge settingAdjustment of depth gauge setting Tensioning the chainFilling with chain oil Lubricating cutting equipmentChain oil Checking chain lubricationNeedle bearing lubrication Chain drive sprocketChecking wear on cutting equipment Assembly Fitting the bar and chainFuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules General Basic cutting techniqueTerms Limbing CuttingFelling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatDirectional cuts FellingFelling cut Freeing 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 Carburetor adjustment MaintenanceGeneral Checking brake band wear Correctly adjusted carburetorHigh speed jet H Checking the front hand guardChecking the brake trigger Starter MufflerChanging a broken or worn starter cord Changing a broken recoil spring Air filterTensioning the recoil spring Fitting the starterLubricating the bar tip sprocket Adjustment of the oil pumpSpark plug Needle bearing lubricationWinter use Air Injection centrifugal cleaningTemperature -5C 23F or colder Heated handlesMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical data050/1,3 mm Saw chain filing and file gauges058/1,5 mm Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsKickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautionsPage ´z+R2G¶5¨ Page 1150183-95 ´z+R2G¶5¨ ´z+R2G¶5¨
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