Manuals / Husqvarna / Lawn and Garden / Brush Cutter

Husqvarna SG13/968999353 Ignition system, Fitting the wrong spark plug type can damage the engine

Models: SG13/968999353 SG13A, SG13

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Ignition system

MAINTENANCE

Ignition system

The engine is equipped with an electronic ignition system. Only the spark plug requires maintenance.

For recommended spark plug, see “Technical data”.

IMPORTANT INFORMATION

Fitting the wrong spark plug type can damage the engine.

1. Remove the ignition cable shoe and clean around the spark plug.

2.Remove the spark plug with a 13/16” (21 mm) spark plug socket wrench.

3.Check the spark plug. Replace the spark plug if the electrodes are burned or if the insulation is cracked or damaged. Clean the spark plug with a steel brush if it is to be reused.

4.Measure the electrode gap with a gapping tool. The gap should be 0.7-0.8 mm/0.028-0.031”. Adjust as necessary by bending the side

electrode.

5. Reinsert the spark plug, turning by hand to avoid damaging the threads.

IMPORTANT INFORMATION

Inadequately tightened spark plugs can cause overheating and damage the engine. Tightening the spark plug too much can damage the threads in the cylinder head.

6.After the spark plug is seated, tighten it using a spark plug wrench so that the washer is compressed. A used spark plug should be turned 1/8-1/4 of a turn from the seated position. A new spark plug should be turned 1/2 a turn from the seated position.

7.Replace the ignition cable shoe.

8011-027

8011-054

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Husqvarna SG13/968999353 manual Ignition system, Fitting the wrong spark plug type can damage the engine, Maintenance

Contents

Operator’s Manual SG13A/CE/968999239SG13/968999353 MANUAL NO. 539109280 REV. 03 12/01/052005 Husqvarna All Rights Reserved Printed Beatrice, Nebraska Maintenance TABLE OF CONTENTS Stump Grinder SG13ASymbols and decals Safety instructionsInsure your machine Good serviceINTRODUCTION CongratulationsIMPORTANT INFORMATION SYMBOLS AND DECALSDecals and machine-bound instructions Decal Location of decalsTranslation of instructions Decal Important informationIMPORTANT INFORMATION SAFETY INSTRUCTIONSGeneral use IMPORTANT INFORMATION SAFETY INSTRUCTIONSNever leave the machine unsupervised with the engine running Use appropriate equipment PreparationsSAFETY INSTRUCTIONS Clear the work area before beginning workSAFETY INSTRUCTIONS OperatingSAFETY INSTRUCTIONS Movement/TransportStorage ChildrenSAFETY INSTRUCTIONS Fuel systemSAFETY INSTRUCTIONS MaintenanceTurn off the engine and remove the spark plug cable Personal equipment PROTECTIVE EQUIPMENTEquipment set-up SET-UPSET-UP 9. Remove air cleaner and double wire clamp from engine. FigureSET-UP 18. Reattach air cleaner to engineMain components and operating controls CONTROLSPresentation CONTROLS EngineThrottle Choke control StarterStarter handle Fuel valveOil drainage Spark plugMuffler Oil dipstickCentrifugal clutch Do not bind the bar to the handle It is there for your safetyFuel tank FuelingNEVER operate a machine with a defective brake On/Off Engine switch on the panelAdjustment bar for the handle BrakeFuel valve Engine switch on the engineOPERATION Starting the engineOPERATION Engine switch on the handleDead man’s grip bar Starter handleBrake Engine switchNormal shutdown Shutdown in emergency situationsOPERATION Before you start1. Place the cutting blade near the top front edge of the tree stump Using your stump grinderDISENGAGE 4. Set engine switch on handlebar to ON OPERATIONIMPORTANT INFORMATION OPERATION5. Tilt the machine on its wheels, lifting the cutting OPERATION 18. Shut off the machine when you are doneOperating on hills TransportThe machine is securely parked where it will not tip or begin rolling MAINTENANCEMaintenance schedule No service operations may be performed on the engine or unit unlessMAINTENANCE Cleaning the cyclone filterExercise care when reassembling to avoid damaging anything Make sure the air channel ends up in the proper positionIMPORTANT INFORMATION Replacing the air filterDO NOT wash the paper filter. DO NOT oil the paper filter MAINTENANCEMAINTENANCE Cleaning the sludge reservoirIdle adjustment Risk for carbon monoxide poisoning. Perform the adjustment outdoorsIMPORTANT INFORMATION Ignition systemFitting the wrong spark plug type can damage the engine MAINTENANCEMAINTENANCE Adjusting the drive beltMAINTENANCE Disassembling and reassembling the blade, pockets and teethL = Left mounting R = Right mounting Ensure that the tooth cutters are turned in the cutting directionMAINTENANCE Removing and refitting the wheelsMAINTENANCE Adjusting the brakeCleaning and washing Two minute rule8011-276chg LUBRICATIONIMPORTANT INFORMATION 1. Engine oilChecking the engine’s oil level LUBRICATIONLUBRICATION 2. Right wheel3. Throttle cable Action TROUBLESHOOTINGSymptom CauseClutch is worn - replace shoes and springs, and/or clutch bearings ProblemPossible solutions TROUBLESHOOTINGWinter storage ServiceSTORAGE SG13A TECHNICAL DATASPECIFICATIONS ModelWIRING DIAGRAM Delivery service SERVICE JOURNALDate, stamp, signature SERVICE JOURNALAction