Operator’s Manual Models: SG13A/CE/968999239 SG13/968999353 MANUAL NO. 539109280 REV.
©2005 Husqvarna. All Rights Reserved.
TABLE OF CONTENTS Stump Grinder SG13A Introduction ................................................ 4 Congratulations ..................................... 4 Use ........................................................ 4 Insure your machine .............................. 4 Good service ......................................... 4 Serial number ........................................ 4 Symbols and decals ................................... 5 Location of decals..................................
INTRODUCTION Congratulations Thank you for purchasing a Husqvarna stump grinder. Through your confidence in us, you have chosen an exceptionally high quality product. This manual is a valuable document. It describes your new Husqvarna machine. Read the manual carefully before attempting to use the machine. Following the instructions (use, service, maintenance, etc.) can considerably increase the life-span of your machine and even increase its resale value. Please contact your dealer for more information.
SYMBOLS AND DECALS IMPORTANT INFORMATION WARNING! Xxxx xxx xxxx xx xxxx x xxxx. Xxxx xxx xxxx xx xxxx x xxxx. Used in this publication to notify the reader of a risk Used in this publication to notify the reader of a risk of material damage, particularly if the reader DOES of personal injury, particularly if the reader DOES NOT follow the instructions given in the manual. NOT follow the instructions given in the manual. Used also when there is a potential for misuse or misassembly.
SYMBOLS AND DECALS Location of decals 9 5 3 12 8 10 4 11 7 2 6 1 Translation of instructions Decal 3 Important information Read and make sure you understand the Operator’s Manual before use or maintenance. To obtain a replacement manual, please contact your dealer. Observe all safety instructions; otherwise you may injure yourself or others around you. Make sure that the machine is in serviceable condition prior to use.
SAFETY INSTRUCTIONS General use The object of this manual is to help you use your Husqvarna machine safely and to give you information about how to maintain your machine. Please read the manual carefully before attempting to use the machine. If after reading the operator’s manual you are still unsure about the safety risks associated with use of the machine, you should not use the machine. Please contact your dealer for more information. These safety instructions only address the basics for safe use.
SAFETY INSTRUCTIONS • Follow all safety instructions. Failure to do so may result in injury to yourself or others. • Accident prevention regulations, other general safety regulations, occupational safety rules and traffic regulations must be followed without fail. • All users shall be trained in use of the machine. The owner is responsible for training users. • Engage an authorized Husqvarna workshop for all service and repairs not described in this manual.
SAFETY INSTRUCTIONS Preparations • Make sure that you always have first aid equipment at hand when using the machine. • Make sure nobody else is in the vicinity of the machine when you start the engine, engage the drive or run the machine. • Make sure animals and people maintain a safe distance from the machine. • Clear the area of objects such as stones, toys, steel wire, etc. that could become caught in moving machine parts and thrown out.
SAFETY INSTRUCTIONS Operating • DO NOT use the machine on grades of more than 10°. • DO NOT use the machine if you are tired, if you have consumed alcohol, or if you are taking other drugs or medication that can affect your vision, judgment or coordination. • Never use the machine indoors or in spaces lacking proper ventilation. • Make sure you have a proper foothold when using the machine, particularly when backing. Walk, don’t run. Never work on wet grass. Poor traction may cause you to slip.
SAFETY INSTRUCTIONS Movement/Transport • To turn and steer the machine, press down on the handle and turn on the back wheels. • Turn off the engine and allow it to cool at least 2 minutes before transport. • Collapse the handle if the machine is equipped with a collapsible handle. • Be careful and use safe lifting and moving techniques when loading/unloading the machine. • We recommend having two people to lift the machine. • Activate the parking brake during transport.
SAFETY INSTRUCTIONS Fuel system WARNING! Gasoline and gasoline fumes are poisonous and extremely flammable. Be especially careful when handling gasoline, as carelessness can result in personal injury or fire. • Only store fuel in containers approved for that purpose. • Never remove the fuel cap and fill the fuel tank when the engine is running. • Always stop the engine when refueling. • Do not smoke when filling the gasoline tank and do not pour gasoline in the vicinity of sparks or open flame.
SAFETY INSTRUCTIONS Maintenance • Never make adjustments with the engine running. • Disengage the drive units, shut off the engine and wait until all moving parts come to a complete stop before making adjustments, performing maintenance or cleaning the machine. • Disconnect the spark plug cable before beginning repair work. • Keep all components in serviceable condition and make sure all nuts, bolts, etc. are tight. Replace worn or damaged decals. • Be careful when checking work tools.
PROTECTIVE EQUIPMENT Personal equipment Consult your Husqvarna dealer when selecting protective equipment. Our dealers have a broad assortment of equipment for professionals such as forestry workers and knowledge about occupational environment requirements and protective levels. Before using the stump grinder, you may in many cases need to cut back the object with a power saw.
SET-UP Equipment set-up 1. Remove crate top and sides. 2. Remove upper handle bar assembly and lay aside. 1 7 2 3. Open bag containing loose hardware. 4. Using four (4) screws, flat washers and nuts attach the upper handle bar assembly to lower handle bar assembly. See Figure 1. 3 4 NOTE: Handle fit is tight. When aligning holes use a tapered type pilot to help align holes (i.e. punch or phillips style screw driver). 5.
SET-UP 8. Attach the yoke to the brake’s top mounting hole using the clevis pin and cotter pin. Make sure the rod is positioned in the bracket as shown in Figure 4. NOTE: Adjust the brake before inserting hair pin. To engage brake, pull back on handle until brake rod assembly goes “over center” and locks the brake ON. Turning the yoke clockwise shortens the rod tightening the grip on the brake disc by the brake pads. counterclockwise loosens the clamping force.
SET-UP 1 14. Insert “L” end of throttle cable into the outside hole of the engine throttle control lever. Figure 7. 2 FORWARD FIGURE 7 1. ENGINE THROTTLE CONTROL LEVER 2. THROTTLE CABLE 15. Attach the throttle cable to the engine using the double wire clamp removed in step nine. Figure 8. 16. Test throttle control by pulling 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.
CONTROLS Presentation Congratulations on your choice of an exceptionally high quality product. This operator’s manual describes the Husqvarna stump grinder. The machine is equipped with a 13 hp Honda fourcycle engine. Main components and operating controls 8 9 5 6 10 11 4 8 3 5 1 7 1. Handle 7. Engine 2. Dead man’s grip bar 8. Rear lifting handle 3. Brake lever 9. Adjustment bar for the handle 4. Belt guard for the cutter drive 10. Throttle 5. Front lifting handle 11. Engine switch 6.
CONTROLS Engine Exterior engine components and controls. 1. Throttle 2. Starter 3. Starter handle 4. Fuel valve 5. Choke control 6. Air filter 7. Spark plug 10 8. Muffler 8011-126 9. Oil dipstick 10. Oil drainage 11. Oil level guard 12. Engine switch - disconnected use switch on handle bar 14 13 13. Fuel tank 14. Fuel filler cap 12 11 9 8011-273chg Throttle The lever on the engine is normally not used. It is connected to the throttle on the handle.
CONTROLS Starter The starter is of the magnapull type with spring return. To replace the return spring or starter cord, contact an authorized service workshop. Starter handle 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. Do not pull out the starter cord completely and do not let go of the starter handle when extended.
CONTROLS Spark plug The engine spark plug is hidden under the ignition cable shoe. When performing service, it is important that the engine cannot start accidentally. For this reason, always remove the ignition cable shoe from the spark plug. To avoid pulling the cable, the cable shoe is equipped with a special handle; see the illustration. Type of spark plug, see “Technical data”. Service instructions, see “Maintenance/Electrical system”.
CONTROLS Fuel tank Underneath the tank, there is a fuel filter combined with the fuel valve. The tank volume is 1.72 Gal. (6.5 liters) Fueling Read the safety instructions before fueling. Keep the fuel and fuel tank clean. Avoid filling the machine with dirty fuel. Make sure the fuel cap is properly tightened and the gasket is not damaged, particularly before washing the machine. Use unleaded gasoline with minimum 86 octane rating. Never use gasoline mixed with two-cycle oil.
CONTROLS Throttle . The lever controls engine speed. With the lever down, the engine runs at idle and functions as start position. When the engine speed increases, the centrifugal clutch drive automatically engages the cutting wheel. On/Off Engine switch on the panel The ON/OFF engine switch can be used to stop the engine. The illustration shows the toggle switch in the OFF position (short circuited electrical system).
OPERATION Starting the engine Check that all daily maintenance as described in the maintenance schedule has been performed. Check that there is sufficient fuel in the tank. Fuel valve Open the fuel valve. Place the lever all the way to the right. FUEL VALVE 8011-182 Choke control When starting the engine warm, the lever should be in the right position; see the illustration. When starting the engine cold or partially warm, place the lever completely or partly to the left.
OPERATION Engine switch on the handle Set the toggle switch to ON. Dead man’s grip bar Hold in the bar for the dead man’s grip against the handle. 8011-185 Starter handle The dead man’s grip must be pressed in when starting the 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.
OPERATION Normal shutdown Throttle Set the throttle to SLOW/DISENGAGE. . If the engine has been running full out, let it run easily for about 30 seconds to one minute at low speed. DO NOT let front of unit touch ground until you are sure cutting wheel has stopped turning. Engine switch Wait at least 20 seconds, 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.
OPERATION Before you start Dig away the earth and remove any stones near the tree stump that may interfere with your work. Check that the ground is free of foreign objects, such as electrical cables, barbed wire, etc. Cut or trim the stump as necessary using a power saw. • Review all of the machine’s safety decals. 8011-141 • Use a hard hat, ear and eye protection. A mesh visor alone does not provide sufficient eye protection; supplement with protective glasses.
OPERATION Using your stump grinder WARNING! NEVER allow 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. 8011-201-chg 2. Set the brake to lock position. 3. Set the throttle to SLOW (START) 4. Set engine switch on handlebar to ON. 28 . DISENGAGE.
OPERATION 5. Tilt the machine on its wheels, lifting the cutting wheel off the ground. 8011-202chg 6. Hold in the dead man’s grip bar and start the engine. 7. Allow the engine to warm up for two minutes at idle before grinding. 8011-127 8011-185 8. Set the throttle to FAST to ENGAGE clutch. . IMPORTANT INFORMATION If the cutting wheel is too low, the machine may start to “climb” over the stump and become unstable. 9. Place the middle of the cutting wheel approximately one inch (2.
OPERATION 11. Before moving the machine forwards, you should ensure that the cutting wheel is above the ground and located on either side of the stump. Move the machine forward by releasing the brake, pushing it forward, activating the brake again and repeating steps 9 and 10. 12. Repeat steps 9 through 11 until the upper portion of the stump has been removed. DO NOT cut deeper than ground level at this stage. 13. Set the throttle to SLOW/(START) DISENGAGE and wait until the cutting wheel stops rotating.
MAINTENANCE Maintenance schedule The following is a list of maintenance procedures that MUST be performed on the machine. For those points not described in this manual, visit an authorized service workshop.
MAINTENANCE Cleaning the cyclone filter The cyclone filter collects the largest contaminant particles, which collect in the container. When you can see a layer of dirt at the bottom of the container, the cyclone housing (4), air channels and air intake screen (3) must be cleaned. 8011-188 Remove the three screw holding the cyclone housing. Remove the housing with the air intake screen and remove the air channels.
MAINTENANCE Replacing the air filter If the engine seems weak, produces black smoke or runs unevenly, the air filter may be clogged. For this reason, it is important to clean and replace the air filter regularly (see the maintenance schedule for the proper service interval). WARNING! Allow the exhaust system to cool before performing service. Risk for burns. 8011-188 Cleaning/replacement of the air filter is carried out as follows: 1.
MAINTENANCE Cleaning the sludge reservoir 1. Close the fuel valve. FUEL VALVE 8011-186 2. Unscrew the sludge reservoir (2). Make sure not to misplace the o-ring (1). 3. Clean the reservoir and the o-ring using a cleaning solvent and dry carefully. 4. Put the o-ring in place in its track and replace the sludge reservoir. Tighten it moderately to avoid damaging the threads. 5. Turn the fuel valve to ON and check for leaks. If it leaks, replace the o-ring.
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. 8011-027 3. Check the spark plug.
MAINTENANCE Adjusting the drive belt 1. Remove the belt guard by removing the three acorn nuts and lockwashers on the front of the belt guard. WARNING! Prevent the engine from being started by removing the ignition cable from the spark plug. 8011-226chg 2. Check that the 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. 8011-227 COVER PLATE 3.
MAINTENANCE IMPORTANT INFORMATION If pulley on cutter head shaft must be moved, the set screws MUST be fully removed, fresh “Loctite 242” put on threads and re-torqued to 100 - 110 in./lbs. (17513 / 19264 N•m). 7. Check that the pulleys are aligned using a staright edge along the inside face of the clutch and pulley. 1 Pulleys must be inline. Maximum gap or misalignment is 1/16” (.062) or 15.7 mm. Adjust using the tension bolts as necessary. Check belt tension again. 8.
MAINTENANCE WARNING! The cutters can come loose from the cutting wheel if the screws are not sufficiently tight. Comply with the recommended torque settings. Hold the teeth (30-31) in place as in the upper diagram when mounting 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.
MAINTENANCE Adjusting the brake Overcentering type handle activites brakes. Undo clevis pin from brake and turn clockwise to tighten brake or counter clockwise to loosen. Tighten so handle snaps down when locked but unlocks easily when handle is moved forward. Brake is properly adjusted when wheel will not turn when you try to push or pull unit. 2 1 1. CLEVIS PIN 2.
LUBRICATION 6 Yearly Months Weekly Daily 4 Hours 50 Hours 100 Hours 300 Hours 8011-276chg 40
LUBRICATION 1. Engine oil The engine should be warm (but not hot) when changing the oil. Warm oil flows out faster and leaves a smaller quantity of old oil inside the engine. 1. Place a suitable vessel underneath the oil drainage screw. Remove the oil dipstick and the oil drainage screw (5) on the back surface of the engine. WARNING! Engine oil can be very hot if it is drained directly after stopping the machine. Allow the engine to cool somewhat.
LUBRICATION 2. Right wheel Lubricate using a grease gun until the grease squeezes out, 1 nipple. Use good quality MP grease. Grease from wellknown brand names (petrochemical companies, etc.) usually maintains a good quality. 8011-231 3. Throttle cable Peel back the rubber covers at both of the cable mountings. Grease both ends of the throttle cable and move the controls to end stop positions when lubricating. Refit the rubber covers on the cable after lubrication.
TROUBLESHOOTING Symptom The engine will not start • User error • Fuel system Cause Action Fuel valve closed. Choke valve open. Engine switch in OFF position. Open the fuel valve. Close the choke with cold engine. Turn engine switch to ON. Fuel tank empty. Machine stored without observing proper procedure from chapter “Storage/Winter storage”. Contamination, water or ice in fuel system Fill with fuel. Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh fuel.
TROUBLESHOOTING Problem Possible solutions Belt coming off. 1. Pulleys not aligned. 2. Belt tension is insufficient. Adjust belt tension. Belt engages late or slips. 1. Tighten the belt as described in the operator’s manual. 2. Reduce cutting depth. Belt not staying tight after adjustment. 1. Check for damage on the axle, pulley or key. Make sure that the setscrews are properly tightened. 2. Replace damaged parts. The cutting wheel does not rotate. 1.
STORAGE Winter storage To ready the machine for storage, follow these steps: 1. Clean the machine carefully, particularly the chassis and working equipment. Touch up damage to the paint to prevent rust. At the end of the season, the machine should be readied for storage (or if it will not be in use for longer than 30 days). Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can plug the carburetor and disrupt 2.
TECHNICAL DATA SPECIFICATIONS: 46 Model SG13A Engine Honda GX390 Cylinder volume 389 cm3 (23.7 cu in) Power 13 hp (9.6 kW) at 3600 RPM Torque 26.5 Nm at 2500 RPM Idling speed 1250-1550 RPM Spark plug NK BPR6ES DENSO W20EPR-U Fuel tank volume 6.5 liters/1.72 US Gal Tires 4.10-6 (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.
WIRING DIAGRAM SAFETY SWITCH ON/OFF SWITCH ENGINE ON/OFF SWITCH (DISCONNECTED) TRANSISTOR IGNITION SPARK PLUG OIL LEVEL GUARD COLOR CODE: Y - YELLOW B - BLACK ENGINE HARNESS 109299 ENGINE ON/OFF SWITCH (DISCONNECTED) TRANSISTOR IGNITION SPARK PLUG B CONSOLE HARNESS 109298 B B ON/OFF SWITCH B B MODULE Y B Y Y Y B SAFETY SWITCH Y OIL LEVEL GUARD 47
SERVICE JOURNAL Action Date, stamp, signature Delivery service 1. Break the packaging and make sure the machine has not been damaged in transport. 2. Where applicable, assembly accompanying components. 3. Check that the machine design corresponds to the customer order. 4. Check that the right amount of oil is in the engine and transmission. 5. Check and adjust air pressure in the tires. (25 psi max.) 6. Check that the working equipment is properly set. 7.
SERVICE JOURNAL Action Date, stamp, signature 49
