TABLE OF CONTENTS Stump Grinder SG13A Introduction ..........4 Maintenance ..........31 Congratulations ........4 Maintenance Schedule ......31 Use ............4 Cleaning the Cyclone Filter ....32 Insure your machine ......4 Replacing the Air Filter ......33 Good service ......... 4 Cleaning the Sludge Reservoir ....
Please contact your dealer for more information. If you sell your Husqvarna machine, make sure to give the operator’s manual to the new owner. The stump grinder is used to remove tree stumps. By moving the blade in sweeping movements laterally over the top and front of the stump, you can gradually grind it away.
Decals and machine-bound instructions Decals that are missing or illegible should be re- placed before using the machine. 1. Husqvarna logo 7. Model designation SG13A 2. Husqvarna logo 8. Engine switch on the handle 3. General precautions 9. Throttle 4.
SYMBOLS AND DECALS Location of decals Decal 4 Translation of instructions Warning Decal 3 Engine exhaust, some of its constituents and cer- Important information tain vehicle components contain or emit chemicals Read and make sure you understand the considered by the Sate of California to cause can- Operator’s Manual before use or maintenance.
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.
WARNING! • Husqvarna original spare parts are designed and specified to maintain high quality and Overexposure to vibration may lead to correct fit for optimal durability and life-span. circulatory or nerve damage, particularly From a safety point of view, you should only in people who have impaired circulation.
Ask your dealer about approved protective clothing and approved protective equipment recommended by Husqvarna.
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.
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.
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.
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. •...
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. 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.
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”...
SET-UP 14. Insert “L” end of throttle cable into the outside hole of the engine throttle control lever. Figure 7. 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.
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 four- cycle engine. Main components and operating controls 1. Handle 7. Engine 2.
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 8. Muffler 8011-126 9. Oil dipstick 10. Oil drainage 11. Oil level guard 12. Engine switch - disconnected use switch on handle bar 13.
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.
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;...
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.
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.
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.
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.
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.
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.
OPERATION Using your stump grinder WARNING! NEVER allow the blade to touch the ground until it has stopped turning. Place the cutting blade near the top front edge of the tree stump. 8011-201-chg Set the brake to lock position. Set the throttle to SLOW (START) DISENGAGE.
OPERATION Tilt the machine on its wheels, lifting the cutting wheel off the ground. 8011-202chg 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.
NEVER use the machine on grades of 10° or steeper. Transport The Husqvarna stump grinder can be transported in a truck, trailer, van or a large SUV (Sport Utility Vehicle). The stump grinder is equipped with two lifting handles on each side so that two people can lift the machine if necessary.
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 Daily -/10 1/25 3/50 6/100 12/300 Check the engine oil level Change engine oil Check the air filter Clean the air filter...
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.
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).
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.
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.
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.
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 7. Check that the pulleys are aligned using a staright edge along the inside face of the clutch and pulley.
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.
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.
LUBRICATION Yearly Months Weekly Daily Hours Hours Hours Hours 8011-276chg 1. Blade shaft bearings Lubricate 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). 8011-215...
LUBRICATION 2. Engine oil The engine should be warm (but not hot) when WARNING! changing the oil. Warm oil flows out faster and leaves a smaller quantity of old oil inside the engine. Engine oil can be very hot if it is drained directly after stopping the machine.
LUBRICATION 3. Right wheel Lubricate using a grease gun until the grease squeezes out, 1 nipple. Use good quality MP grease. Grease from well- known brand names (petrochemical companies, etc.) usually maintains a good quality. 8011-231 4. Throttle cable Peel back the rubber covers at both of the cable mountings.
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.
TROUBLESHOOTING Problem Possible solutions Belt coming off. 1. Pulleys not aligned. 2. Belt tension is insufficient. Adjust belt tension. Belt engages late 1. Tighten the belt as described in the operator’s manual. or slips. 2. Reduce cutting depth. Belt not staying tight 1.
When ordering spare parts, please specify the 8011-131 puschase year, model, type, and serial number. Always use genuine Husqvarna parts. 7. Lubricate all grease nipples, joints and cables as described in the chapter “Lubrication/ An annual check-up at an authorized service Lubrication schedule”.
TECHNICAL DATA SPECIFICATIONS: Model SG13A Engine Honda GX390 Cylinder volume 389 cm (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...
SERVICE JOURNAL Action Date, stamp, signature Delivery service Break the packaging and make sure the machine has not been damaged in transport. Where applicable, assembly accompanying components. Check that the machine design corresponds to the customer order. Check that the right amount of oil is in the engine and transmission.
SERVICE JOURNAL Action Date, stamp, signature...