Jonsered CC 2145 manual Maintenance, Carburetor, WARNING! The complete clutch cover and

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MAINTENANCE

MAINTENANCE

Carburetor

Your Jonsered product has been designed and manufactured to specifications that reduce harmful exhaust fumes. The engine will be run in after it has used 8-10 tanks of fuel. To ensure that the engine runs at peak performance and produces as little harmful exhaust fumes as possible after the running-in period, ask your dealer/service workshop (which has a rev counter for this purpose) to adjust your carburettor.

WARNING! The complete clutch cover and

!shaft must be fitted before the machine is started, otherwise the clutch can come loose and cause personal injury.

Carburetor adjustment

The carburettor can be designed in different ways, depending on the existing environmental and emissions legislation. Some machines are equipped with movement limiters on the carburettor’s adjuster screws. These limit the adjustment range to a maximum of 1/2 turn.

H

L

1/2

1/2Carburetor

Function

•The carburetor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburetor. The air/ fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine.

•The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, fuel and the type of 2-stroke oil.

•The carburetor has three adjustment controls: L = Low speed jet

H = High speed jet

T = Idle adjustment screw

•The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anti- clockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed.

•The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle

speed; turning it anti-clockwise gives a lower idle speed.

Basic setting

•The basic carburetor settings are adjusted during testing at the factory. The basic setting is richer than the optimal setting and should be maintained for the first few hours the machine is in use. The carburettor should then be finely adjusted. Fine adjustment should be carried out by a skilled technician.

CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti- clockwise until the cutting attachment stops.

Rec. idle speed: See the Technical data section.

Rec. idle speed: See the Technical data section.

WARNING! If the idle speed cannot be

!adjusted so that the cutting attachment stops, contact your dealer/service workshop. Do not use the machine until it has been correctly adjusted or repaired.

Fine adjustment

When the machine has been ”run-in” the carburetor should be finely adjusted. The fine adjustment should be carried out by a qualified person. First adjust the L-jet, then the idling screw T and then the H-jet.

Conditions

•Before any adjustments are made, make sure that the air filter is clean and the air filter cover is fitted. If you adjust the carburettor when the air filter is dirty it will result in a leaner mixture when the filter is finally cleaned. This can lead to serious engine damage.

•Carefully turn both jets, L and H, so that they are midway between fully screwed in and fully screwed out.

•Do not attempt to adjust the L and H jets beyond either stop as this could cause damage.

•Now start the machine according to the starting instructions and let it warm up for 10 minutes.

CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti- clockwise until the cutting attachment stops.

Low speed jet L

Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter-clockwise. When the highest speed has been found, turn the low speed needle L 1/ 4 turn counter-clockwise.

H L

CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti- clockwise until the cutting attachment stops.

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Contents Operator’s manual EPA Symbols KEY TO SYMBOLSKEY TO SYMBOLS CONTENTSContents Note the following before startingDear customer INTRODUCTIONWhat is what on the clearing saw? BC WHAT IS WHAT?What is what on the clearing saw? FC 2145, FC 2145 S, FC 2145 W Decompression valve FC 2145 S, FC 2145 W6 - English What is what on the clearing saw? CC WARNING! The ignition system of this GENERAL SAFETY PRECAUTIONSPersonal protective equipment WARNING! Listen out for warning signals orMachine′s safety equipment WARNING! Never use a machine with faultyA BA B Muffler Cutting attachment guardVibration damping system Quick releaseWARNING! The inside of the muffler contain Locking nutLocking screw WARNING! Mufflers fitted with catalyticWARNING! Always stop the engine before Cutting equipmentWARNING! Using an incorrect cutting General rulesTrimmer head Sharpening the saw bladeAssembling the handlebar and throttle BC 2145, CC ASSEMBLYAssembling the handlebar and throttle FC 2145, FC 2145 S, FC 2145 W Transport position, handlebarN E F P BA C L M C AAssembling the cutting equipment WARNING! When fitting the cuttingH P B C Fitting the blade guard and saw bladeFitting the trimmer guard and trimmer head Trimmy SII L M C AWARNING! When using a clearing saw it Adjusting the harness and clearing sawFitting other guards and cutting attachments Standard harness2 Grass clearing Vector harnessWARNING! Take care when handling fuel Fuel safetyFUEL HANDLING FuelDo not smoke or place hot objects near fuel FuelingWARNING! Taking the following precautions will lessen the risk of fire WARNING! The catalytic converter mufflerWARNING! The complete clutch cover and STARTING AND STOPPINGCheck before starting Starting and stoppingHeated handles FC 2145 W WARNING! When the engine is started withStarting StoppingWORKING TECHNIQUES General working instructionsWARNING! Neither the operator of the WARNING! Machines fitted with saw blades Working methodsWARNING! Watch out for thrown objects WARNING! Sometimes branches or grassBrush cutting with a saw blade Grass clearing using a grass bladeSweeping TrimmingClearing CuttingMAINTENANCE CarburetorWARNING! If the idle speed cannot be Setting procedure without a load Blade can be used Setting procedure with a load Trimmer head should be usedFC 2145, FC 2145 S, FC 2145 W Speed control at 13500 rpm Proceed as follows MufflerCooling system Air filterCleaning the air filter Bevel gearDrive shaft Spark plugTemperature 5C 41F or colder Winter useDaily Maintenance scheduleMaintenance maintenanceFC 2145 S TECHNICAL DATATechnical data WeightIgnition system FC 2145, FC 2145 S, FC 2145 W Approved accessoriesType Cutting attachment guard, Art. noYOUR WARRANTY RIGHTS AND OBLIGATIONS FEDERAL EMISSION CONTROL WARRANTY STATEMENTPoly Trim 6 Nm20mm ~ 3,5 m Trimmy SII095-.130 7,0 mPage 2,7-3,3 mm Auto1,1 Kw 1,1 Kw2,7-3,3 mm Tap n’Go 45 Spin10 m 10 cm 4,3 m´z+Rvy¶5s¨ ´z+Rvy¶5s¨ Page 1150868-95 ´z+Rvy¶5s¨ ´z+Rvy¶5s¨
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