Husqvarna 968999239 Operator'S Manual Download

Page: 43 / 50

TROUBLESHOOTING

Symptom

Cause

Action

The engine will not start

•

User error

Fuel valve closed.

Open the fuel valve.

Choke valve open.

Close the choke with cold engine.

Engine switch in OFF position.

Turn engine switch to ON.

•

Fuel system

Fuel tank empty.

Fill with fuel.

Machine stored without

Clean tank, sludge reservoir and

observing proper procedure

empty carburetor.

from chapter “Storage/Winter

Fill the tank with fresh fuel.

storage”.
Contamination, water or ice in

Clean tank, sludge reservoir,

fuel system

fuel lines and carburetor.
Fill the tank with fresh fuel.

Carburetor problems.

Contact an authorized service
workshop.

•

Spark plug

Wrong spark plug type.

Replace the spark plug.

Buildup on electrodes.

Check electrode gap and clean or

Short circuit.

replace spark plug.

Gasoline or oil on the spark plug.

Clean the spark plug. Air the
engine out. Start with full throttle.

•

No spark after

Faulty engine switch, cable

Contact an authorized service

checking spark plug

or ignition.

workshop.

•

Low compression

Serious interior engine

Contact an authorized service

damage or faulty valves.

workshop.

Engine is gutless or runs unevenly

•

Air filter

Clogged air filter.

Clean or replace the air filter.

•

Fuel system

Machine stored without observ-

Clean tank, sludge reservoir and

ing proper procedure from

empty carburetor.

chapter “Storage/Winter storage”. Fill the tank with proper fuel.

(Blue exhaust)

Tank filled with 2-cycle mixed oil.

Fill the tank with proper fuel.

(Voluminous blue-white

Tank filled with diesel.

Clean tank, sludge reservoir

exhaust)

and empty carburetor.
Fill the tank with proper fuel.

(Black exhaust)

Choke left on.

Open choke valve.

Clogged air filter.

Clean or replace the air filter.

Carburetor problems

Contact an authorized service
workshop.

•

Ignition system

Wrong spark plug type.

Replace the spark plug.

Buildup on electrodes.

Check electrode gap and clean or

Short circuit.

replace spark plug.

Faulty ignition unit.

Contact an authorized service

workshop.

•

Low compression

Serious interior engine damage

Contact an authorized service

(possible blue

or faulty valve.

workshop.

exhaust)

Summary of Contents for 968999239

Page 1: ...Operator s Manual MANUAL NO 539109280 REV 01 03 08 04 Model 968999239 SG13A CE ...

Page 3: ...tarting the Engine 24 Normal Shutdown 26 Shutdown in Emergency Situations 26 Before You Start 27 Using Your Stump Grinder 28 Operating on Hills 30 Transport 30 Maintenance 31 Maintenance Schedule 31 Cleaning the Cyclone Filter 32 Replacing the Air Filter 33 Cleaning the Sludge Reservoir 34 IdleAdjustment 34 Ignition System 35 Adjusting the Drive Belt 36 Disassembling Reassembling the Blade Pockets...

Page 4: ...your new machine You should have all inclusive insurance for liability fire damage and theft Good service Husqvarna products are sold all over the world and only in specialized retail trade with complete service This ensures that you as a customer receive only the best support and service Before the machine was delivered it underwent inspection and was adjusted by your dealer When you need spare p...

Page 5: ...cularly if the reader DOES NOT follow the instructions given in the manual Used also when there is a potential for misuse or misassembly Decals and machine bound instructions 1 Husqvarna logo 2 Husqvarna logo 3 General precautions 4 Exhaust warnings 5 Use ear and eye protection 6 DANGER risk for injury from cutter blade 1 2 3 4 5 6 7 8 9 10 Decals that are missing or illegible should be re placed ...

Page 6: ... vicinity of the machine before starting and during use Avoid slopes that are too steep to use the ma chine safely Clear any debris prior to use Decal 4 Warning Engine exhaust some of its constituents and cer tain vehicle components contain or emit chemicals considered by the Sate of California to cause can cer birth defects or other reproductive harm The engine emits carbon monoxide which is a co...

Page 7: ...afety instructions only address the basics for safe use It would be impossible in the safety instructions to describe all possible risk situations that could arise when using the machine You can however prevent accidents by always using common sense To obtain extra copies of the operator s manual please contact your dealer Read this manual carefully and make sure you understand it before using the...

Page 8: ... regulate the age of the user People and animals can distract you causing you to lose control of the machine For this reason you should always concentrate and focus on the task at hand Never leave the machine unsupervised with the engine running Make sure that other people are nearby when you are using the machine so that you can call for help should an emergency arise The machine is tested and ap...

Page 9: ...se mouth protection protective gloves with good grip and protective clothing which you can move unrestricted Also use leg protection to protect your legs from sparks and the cutting tools Never use the machine when barefoot Always wear protective shoes or protective boots with anti slip and preferably with steel toes Use a helmet with a full face visor or a mesh visor and protective glasses Wear a...

Page 10: ...ess in handling can result in personal injury or fire Never use a machine with a defective muffler In very warm and dry climates stump grinder operation poses a risk of forest fires Stop and inspect the equipment if you run over or into anything If necessary make repairs before beginning again Whatever happens you should always park the machine on even ground disengage the drive activate the parki...

Page 11: ... the fuel valve closed Store the machine and fuel in such a way that there is no risk that leaking fuel or fumes can come in contact with flames or sparks from electrical machines electric engines relays switches boilers or similar Store the machine in a locked space away from children and adults untrained in use of the machine Children Serious accidents can occur if you fail to be on guard for ch...

Page 12: ...t not be started until the problem has been resolved Check the fuel level before each use and leave space for the fuel to expand because the heat from the engine and the sun can otherwise cause the fuel to expand and overflow Avoid overfilling If you spill gasoline on the machine wipe up the spill and wait until it has evaporated before starting the engine If you spill gasoline on your clothing ch...

Page 13: ...any questions regarding service or guarantee matters Follow all maintenance instructions Do not change the setting of governors and avoid running the engine with overly high RPM If you run the engine too fast you risk damaging the machine components Do not modify safety equipment Check regularly to be sure it works properly The machine must not be run with defective or disassembled safety equipmen...

Page 14: ...ws The main difference is that you should wear protective glasses when operating the stump grinder while the wire mesh visor gives sufficient protection when using a power saw Thus when using the stump grinder we recommend using both a wire mesh visor to protect your face and protective glasses Alternatively you can use a Plexiglas face guard but it scratches more easily and is more susceptible to...

Page 15: ...ign holes i e punch or phillips style screw driver 5 Attach the position adjusting rod to bracket on the lower and upper handle bar assemblies See Figure 1 6 Assemble the compression spring two 2 flat washers and yoke to brake rod assembly See Figure 2 Screw yoke onto the rod assembly till rod is even or thru threaded portion of yoke about 1 4 6 35 mm 7 Attach brake rod assembly to brake handle on...

Page 16: ... clamping force Proper brake adjustment is such that the wheel will not turn but slide when handle is over center 9 Remove air cleaner and double wire clamp from engine Figure 5 10 Route the wire harness from engine through guide and handle crossmember Figure 6 11 Route the throttle cable through guide on lower handle assembly Figure 6 12 Connect upper and lower wire harness together Yellow to yel...

Page 17: ...ling back throttle handle on console Throttle arm on engine should be pushed completely forward Cable should not slip in clamp when doing this test 17 Test proper wire length by pulling on the handle adjustment lever and raising and lowering the handle to maximum position without any pull on harness 18 Reattach air cleaner to engine 19 Unit is now ready to be removed from pallet THROTTLE CABLE THR...

Page 18: ...mp grinder The machine is equipped with a 13 hp Honda four cycle engine Main components and operating controls 1 Handle 2 Dead man s grip bar 3 Brake lever 4 Belt guard for the cutter drive 5 Front lifting handle 6 Cutting wheel 7 Engine 8 Rear lifting handle 9 Adjustment bar for the handle 10 Throttle 11 Engine switch 1 2 3 4 5 6 7 8 9 10 11 5 8 ...

Page 19: ...h disconnected use switch on handle bar 13 Fuel tank 14 Fuel filler cap CONTROLS Throttle The lever on the engine is normally not used It is connected to the throttle on the handle If the cable should bind or break you can reduce the throttle with the lever on the engine as an emergency measure to slow the engine speed to an idle and stop the cutting wheel 8011 126 8011 273chg 8011 034 THROTTLE LE...

Page 20: ... The image shows the choke valve open to close move the lever to the left The midway positions can be used When the engine starts the lever can be moved gradually to the right as long as it continues to run smoothly Forgetting the choke is evident as the engine runs roughly and produces black smoke This also results in increased fuel consumption Air filter The engine air filter consists of a cyclo...

Page 21: ...il in the hole where the dipstick fits When checking the oil level the dipstick should not be screwed in The machine should be parked on even ground with the engine stopped Never run the engine without the dipstick in place The engine has an electronic oil level guard It stops and cannot be started if the level becomes too low Yet you should not rely entirely on the level guard rather you should c...

Page 22: ... engine bolts at normal load it can be damaged Change the fuel If this does not help contact an authorized service workshop Do not fill the tank completely leave space for the fuel to expand as it warms up Centrifugal clutch The engine is equipped with a centrifugal clutch that is connected to the crankshaft When the engine speed increases the drive for the cutting wheel engages automatically The ...

Page 23: ...ON position and the dead man s grip must be held in Brake WARNING NEVER operate a machine with a defective brake The lever activates a disk brake on the left wheel when it is pulled backwards The brake should always be activated when operating the grinder when it is parked and when it is being transported Adjustment bar for the handle As the tree stump is ground away the handle position will need ...

Page 24: ...n see the illustration When starting the engine cold or partially warm place the lever completely or partly to the left Move the lever back to the right once the engine starts When the engine is cold it may be best to move the lever back in several stages Find the position where the engine runs smoothly Throttle Set the throttle on the handle to the SLOW START DISENGAGE position 8011 182 FUEL VALV...

Page 25: ...e engine Misuse of the starter handle can damage the starter DO NOT twist the starter cord around your hand Pull out the handle slowly until the gears mesh Then give a sharp pull on the starter handle DO NOT pull out the starter cord completely and DO NOT let go of the starter handle when extended Throttle Keep the throttle at idle When the throttle is increased the cutting wheel will begin rotati...

Page 26: ...ds until the blade has stopped Set the toggle switch to OFF Make sure that the blade is resting against the ground and has stopped completely before doing anything Brake Activate the brake by pulling the lever backwards Fuel valve Close the fuel valve Turn the lever all the way to the left see illustration Shutdown in emergency situations Release the dead man s grip Wait until the blade stops Make...

Page 27: ... that you are familiar with safety regulations and shutdown procedures described previously in the operator s manual Make sure that all guards are in place and in good condition Make sure that the blades and cutters are in place and in good condition 8011 141 8011 191 8011 193 8011 192chg Make sure that the work area and cutter in particular and free from metallic objects such as wire nails etc th...

Page 28: ...ow the blade to touch the ground until it has stopped turning 1 Place the cutting blade near the top front edge of the tree stump 2 Set the brake to lock position 3 Set the throttle to SLOW START DISENGAGE 4 Set engine switch on handlebar to ON 8011 201 chg ...

Page 29: ...iddle of the cutting wheel approximately one inch 2 5 cm above and 3 4 to 1 1 2 inches 2 4 cm into the stump 10 Place the cutting wheel in the upper front edge of the stump Swing the cutting wheel from side to side while lowering it about one inch 2 5 cm after each pass until the front edge of the stump is gone 8011 185 8011 202chg 8011 203 8011 127 IMPORTANT INFORMATION If the cutting wheel is to...

Page 30: ...eve a better hand and arm work position Pull the handle control lever and adjust the handle to the desired position 17 Repeat steps 6 through 10 until you reach the desired depth 18 Shut off the machine when you are done OPERATION Operating on hills Be very careful when operating the stump grinder on hills because the machine can slip or move unexpectedly NEVER use the machine on grades of 10 or s...

Page 31: ... Clean sludge reservoir for fuel system X Check and clean the spark plug X Replace the spark plug X Check engine switch function 3 X Check idle speed X Check and adjust play in valves 4 X Clean fuel tank 4 X Check replace fuel lines as necessary 4 5 X Check throttle and cable 3 X Check blade and cutter 3 X Check decals and warning signs 3 X Check wear and tension on the belts 3 X Check the chassis...

Page 32: ...f the container the cyclone housing 4 air channels and air intake screen 3 must be cleaned Remove the three screw holding the cyclone housing Remove the housing with the air intake screen and remove the air channels The air channels may remain in the upper portion or follow along with the housing when removed Clean the components Use water detergent and a washing up brush Dry carefully Refit the c...

Page 33: ...ess oil 3 Remove the wing nut in the air filter and remove the paper filter Tap the paper filter against a fixed surface to remove dust If the paper filter is still dirty or damaged it MUST be replaced IMPORTANT INFORMATION DO NOT use compressed air over 2 bar 30 PSI to clean the paper filter DO NOT wash the paper filter DO NOT oil the paper filter Allow the exhaust system to cool before performin...

Page 34: ...n the fuel valve to ON and check for leaks If it leaks replace the o ring Idle adjustment Risk for carbon monoxide poisoning Perform the adjustment outdoors WARNING 1 Start the engine and run it until it reaches normal working temperature 2 Adjust the throttle to idle position or so that the engine runs at the lowest possible speed 3 Turn the idle screw 1 so that the engine idles at 1250 1550 RPM ...

Page 35: ... 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 da...

Page 36: ... belt is properly tensioned by squeezing the belt together It should be possible to squeeze the belt down about 1 4 3 8 6 10 mm from the original position 8011 226chg 8011 227 8011 228 3 Loosen screws holding cover plate to belt guard backing plate COVER PLATE SCREW SCREW 4 Undo the four screws A on the cutting shroud 5 Loosen the locking nuts B on the tension bolts 6 Turn the tension bolts C coun...

Page 37: ...y Pulleys must be inline Maximum gap or mis alignment is 1 16 062 or 15 7 mm Adjust using the tension bolts as necessary Check belt tension again 8 Tighten all screws and nuts when the adjustment is complete Be certain cover plate is not rubbing against cutter wheel shaft 9 Refit the belt guard 8011 229chg CHECK CLUTCH PULLEY ALIGN USING INSIDE FACE IMPORTANT INFORMATION If pulley on cutter head s...

Page 38: ...the pockets 32 33 Risk for incorrect assembly Insert the screw 34 in one pocket 32 through the blade section 28 and out though the pocket 33 on the other side Make sure that the roll pins in the back edge of the teeth are seated against the back of the pockets This provides the correct gauging of the cutter edge Tighten the screws 120 150 ft lbs 162 203 Nm Insert a bar through the extra holes in t...

Page 39: ...o the crankcase Should this happen perform an extra oil change on the engine Remove the spark plug and turn the engine over a few revolutions with the starter handle before starting the engine again Cleaning and washing Regular cleaning and washing will increase the machine s lifespan Make it a habit to clean the machine directly after use before the dirt sticks Check before rinsing that the fuel ...

Page 40: ...bricate using a grease gun until the grease squeezes out 2 nipples 1 2 Use good quality high temperature multilith grease i e Mobilith SHC 220 or equal 1 Blade shaft bearings Yearly 6 Months Weekly Daily 4 Hours 50 Hours 100 Hours 300 Hours ...

Page 41: ...Tighten it moderately 3 Make sure the machine is parked on flat ground Fill with new oil using the appropriate viscosity according to the diagram API Service SF SG to the upper level mark on the dipstick threads on the oil dipstick 2 The engine takes 1 16 qts 1 1 liters of oil When checking the oil level the dipstick should not be screwed in 4 Check that the rubber gasket is in position and screw ...

Page 42: ...bricating Refit the rubber covers on the cable after lubrication Cables with sheaths will bind if they are not lubricated regularly Binding in a cable may cause malfunction If the cable binds remove the cable and hang it vertically Lubricate it with thin engine oil until the oil begins to escape from the bottom Tip Fill a small plastic bag with oil and tape it so that it seals against the casing a...

Page 43: ...vice checking spark plug or ignition workshop Low compression Serious interior engine Contact an authorized service damage or faulty valves workshop Engine is gutless or runs unevenly Air filter Clogged air filter Clean or replace the air filter Fuel system Machine stored without observ Clean tank sludge reservoir and ing proper procedure from empty carburetor chapter Storage Winter storage Fill t...

Page 44: ...operly 2 Belt tension is insufficient Adjust belt tension 3 Clutch is worn replace shoes and springs and or clutch bearings The cutting wheel 1 Check that the throttle is disconnected continues to rotate 2 Check for damage on the throttle cable 3 Check that the throttle cable is properly mounted on the throttle valve 4 The engine speed is not under 1000 rpm which is required to disengage the centr...

Page 45: ... stabilizer so that it reaches the carburetor DO NOT empty the fuel tank and the carburetor if you have added stabilizer 1 Clean the machine carefully particularly the chassis and working equipment Touch up damage to the paint to prevent rust 2 Inspect the machine for worn or damaged parts and tighten any nuts or screws that may have become loose 3 Change the engine oil dispose of properly 4 Open ...

Page 46: ...6 12 pneumatic Brake Disk Lever activated Drive Direct Belt Gates HiPower double V belt BP54 Clutch Noram centrifugal clutch Cutting wheel 14 dia x 3 8 thick disc 157 5 mm x 9 5 mm Cutters 8 cutters with tungsten carbide tips including pocket Cutting depth Approx 12 30 48 cm Length 62 73 157 185 cm depending on handle position Width 27 69 cm Height 24 43 61 109 cm depending on handle position Weig...

Page 47: ...LOW B BLACK SPARK PLUG TRANSISTOR IGNITION MODULE OIL LEVEL GUARD ENGINEHARNESS 109299 CONSOLE HARNESS 109298 ON OFF SWITCH SAFETY SWITCH Y B B B Y B Y B Y B Y B ON OFF SWITCH SAFETY SWITCH SPARK PLUG ENGINEON OFF SWITCH DISCONNECTED TRANSISTOR IGNITION OIL LEVEL GUARD ...

Page 48: ...tion schedule 10 Fill the fuel tank and start the engine 11 Check that the machine and working equipment do not move in neutral 12 Check all operating instruments 13 Check decals and information attached to the unit 14 Check the engine speed RPM see Technical Data 15 Check for leakage 16 Inform the customer about The need and advantages of following the service schedule The need and advantages of ...

Page 49: ...49 SERVICE JOURNAL Action Date stamp signature ...

Page 50: ......

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