Jonsered CS 2147 Muffler, Needle bearing lubrication, Adjustment of the oil pump, Cooling system

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MAINTENANCE

Muffler

The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator.The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and combustible material.

Some mufflers are equipped with a special spark arrestor mesh. If your machine has this type of muffler, you should clean the mesh at least once a week. This is best done with a wire brush.

CAUTION! The mesh must be replaced if it is damaged. If the mesh is blocked the machine will overheat and this will cause damage to the cylinder and piston. Never use a machine with a muffler that is in poor condition.

A muffler fitted with a catalytic converter greatly reduces the concentration of hydrocarbons (HC), oxides of nitrogen (NO) and aldehydes emitted with exhaust gases. However, it does not cut down carbon monoxide (CO), which you cannot smell! Consequently, never work in an enclosed or badly ventilated area. Good air circulation should always prevail when working in snowy hollows, ravines or in confined conditions.

Consequently, never work in an enclosed or badly ventilated area. Good air circulation should always prevail when working in snowy hollows, ravines or in confined conditions.

WARNING! The catalytic converter muffler

!gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when working near flammable substances and/or vapours.

Needle bearing lubrication

The clutch drum is fitted with one of the following drive sprockets:

ASpur sprocket (the chain sprocket is welded on the drum)

BRim sprocket (replaceable)

Both versions have a needle bearing on the drive shaft, which has to be greased regularly (once a week).

CAUTION! Use a high-quality bearing grease or engine oil.

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 position 2. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

 

+

–

2

1

 

3

WARNING! The engine must not be running

!when making adjustments.

Recommended settings:

Bar 13"-15": Position 1

Bar 15"-18": Position 2

Bar 18"-20": Position 3

Cooling system

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

The cooling system consists of:

5

4

3

2

1

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.

CAUTION! 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.

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Contents Operator′s manual Key to symbols KEY to SymbolsContents Safety Instructions Machine′s safety equipmentPersonal protective equipment Chain brake and hand guard Throttle lock Stop switchChain catcher Right hand guardMuffler Checking brake band wearChecking the hand guard Checking the brake trigger Checking the inertia brake releaseThrottle lock Chain catcherCutting equipment Stop switchGeneral rules Vibration damping systemBar Cutting equipment designed to minimise kickbackChain Some terms that describe the bar and chainSharpening your chain and adjusting raker clearance General information on sharpening cutting teethWith a badly sharpened chain Setting the raker clearance General advice on setting raker clearanceTensioning the chain Sharpening cutting teethChain oil Lubricating cutting equipmentFilling with chain oil Checking chain lubricationNeedle bearing lubrication Lubricating the bar tip sprocketChecking wear on cutting equipment Chain drive sprocketHow to avoid kickback What is kickback?Do not let go of the handles General safety precautions Starting Fuel safetyBasic safety rules General working instructionsTransport and storage General Basic cutting techniqueTerms CuttingLimbing Tree felling techniqueSafe distance Felling directionFelling Clearing the trunk and preparing your retreatDirectional cuts Felling cutCutting the trunk into logs Freeing a tree that has fallen badly General adviceFreeing a trapped tree Cutting trees and branches that are in tensionWhat is what on the chain saw? What is WHAT?Fitting the bar and chain AssemblyFitting a spike bumper Working with the chainFuel Handling FuelFollowing applies to chain saws with catalytic converters Fuelling Chain oilStarting and stopping Starting and StoppingCold engine Warm engineStopping Carburettor MaintenanceCorrectly adjusted carburettor Fine adjustment of the idle speed TStarter High speed jet HSpark plug Air filterTensioning the recoil spring Changing a broken recoil springWhen making adjustments Adjustment of the oil pumpMuffler Needle bearing lubricationHeated handles CS 2147W, CS 2152W Centrifugal cleaning TurboElectrical carburettor heating CS 2147WH, CS 2152WH Winter useWeekly maintenance Daily maintenanceMonthly maintenance Below you will find some general maintenance instructionsTechnical data Technical DataBar and chain combinations EC-declaration of conformity Applies to Europe onlyCispr 121997, EN608 Page 1088890-26
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