Jonsered GR 2026D, GR 2032D, GR 2036 manual Maintenance, Carburetor

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MAINTENANCE

Carburetor

Your JONSERED product has been designed and manufactured to specifications that reduce harmful emissions.

After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to adjust your carburetor for optimum operating conditions.

!WARNING!

The complete clutch cover with shaft must be fitted before the machine is started, otherwise the clutch can become loose and cause personal injury.

Functioning

The carburetor governs the engine speed via the throttle trigger. In the carburetor, air/fuel is mixed. This air/fuel mixture is adjustable. If you want to take advantage of the maximum output of the engine, the setting must be correct.

The setting of the carburetor means that the engine is adjusted to local conditions, for example climate, altitude, gasoline and type of two-stroke oil.

The carburetor has three

adjustment possibilities: L= Low speed needle H= High speed adjustment screw

T= Idle speed adjustment screw

• The fuel quantity

Basic setting

The carburetor is set to its basic setting when test run at the factory. The basic setting should be kept during the machine‘s first working hours. Thereafter the carburetor should be finely adjusted. Fine adjustment should be carried out by a skilled technician.

NOTE! If the cutting attachment rotates/moves in the idling position, turn the idling speed screw counter-clockwise until the blade stops.

Rec. idling speed: 2 700 rpm.

Recommended max. speed: See technical data”.

!WARNING!

Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the cutting attachment stops. Do not use the machine until it has been properly 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 qualified person. First adjust the L-jet, then the idling screw T and then the H-jet.

Conditions

Before any adjustments are made the airfilter should be clean and the airfilter cover fitted. Adjusting the carburetor while a dirty airfilter is in use will result in a leaner mixture when the filter is finally cleaned. This can give rise to serious engine damage.

Carefully turn the L and H needle to the mid point between fully turned in and fully turned out.

Do not attempt to adjust the needles beyond the stops as damage can occur.

Now start the machine according to the starting instructions and run it warm for 10 minutes.

NOTE! If the cutting attachment rotates/moves the T screw should be turned anti-clockwise until the cutting attachment stops.

required in proportion to the airflow the throttle trigger level allows is adjusted by means of the L- and H-needles. Turning the needles clockwise gives a leaner fuel mixture (less fuel), turning them counter-clockwise gives a richer fuel mixture (more fuel). A lean mixture gives higher rpms and a rich one lower rpms.

The idling speed screw T regulates the position of the throttle lever in the idling speed position. Turn the idling speed screw clockwise gives a higher idling speed, turn it counter-clockwise a lower idling speed.

Low speed needle 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. NOTE! If the cutting attachment rotates/moves in the idling position, turn the idling speed screw T counter-clockwise until the cutting attachment stops.

+ 1/4

L

24 – English

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Contents Operator´s manual EPASymbol Explanation SymbolsContents Safety Instructions Machine‘s safety equipmentPersonal protective equipment Throttle trigger lockStop switch Cutting attachment guardAnti-vibration system Quick-releaseMuffler Cutting equipmentLocking nut Throttle trigger lock Vibration damping system Cutting equipment Cutting equipment Sharpening the clearing bladeSharpening the grass blade Trimmer headGeneral safety instructions Start Fuel safetyTransport and storage 10 ftBasic safety precautions General working instructionsAdjusting the harness and clearing saw Basic clearing techniquesDesignations Forestry clearing using a saw blade Clearing‘s ABCWorking methods Brush cutting using the saw blade Brush cutting using a grass bladeGrass clearing using the trimmer head and plastic knifes ClearingTrimming SweepingWhat is WHAT? What is what on the brushcutter?Assembly Assembling the handlebars GR2036Transport position, handlebars Assembling the blade guard and grass blade Axle is lockedAssembling other guards and cutting equipment Adjusting the harness and clearing saw Fuel Handling Fuel mixtureFuelling Start and Stop Control before startingStart and stop Maintenance CarburetorFinal setting of the idling speed T High speed needle H Correctly adjusted carburetorMuffler Cooling systemAir filter Spark plug Angle gearFiling the grass blade Maintenance schedule Daily maintenanceWeekly maintenance Monthly maintenanceTechnical Data Technical dataGR 2026D GR 2032D Approved accessories GR2032D Type Cutting attachment Approved accessories GR2036 Type Cutting attachmentType Cutting attachment Guard Art No Guard Ref NoEmission Control Warranty Statement Your Warranty Rights ObligationsAuto Poly Trim Click Trimmy H Trimmy SII ~ 15 cm ´*xt=¶5Q¨ Page 108 88 2002W04