M2961090D MODEL NUMBER: 2961090 SERIAL NUMBER: _____________ Owner's Manual Instructions for Operation, Maintenance Compact Stump and Root Grinder 2961090 (200-6H) Your Dosko grinder is intended for outdoor-use only and can be used to remove many tree stumps and exposed root systems close to ground level. By moving the blade in sweeping movements laterally over the top and front of the stump, you can gradually grind it away.
Hazard Signal Word Definitions 2
Table of Contents Part I. Introduction About Your Grinder ..............................................................................................................4 Safety Decal Locations ............................................................................................................5 Safety Decals ............................................................................................................................ 6 Receiving Your Unit ................................................
About Your Grinder Thank you for purchasing or renting your Dosko grinder! Owner/Operator/Renter Training Read and follow all instructions and safety precautions presented throughout this manual. A summary of important safety information can be found at the end of the manual. Keep this manual for reference and review. If the owner of this unit is different than the operator, give a copy of this manual to any operator to read.
Safety Decal Locations Reference # 1 2 3 4 5 6 7 Part # 786100 decal set Description Control Panel California Proposition 65 Warning Poisonous Gas Hazard Flying Debris Hazard (direction) Personal Injury / Fire, Explosion / Entanglement Hazards Flying Debris Hazard (person) Amputation and Entanglement Hazard WARNING ALWAYS make sure safety labels are in place and in good condition. If a safety label is missing or not legible, order new labels.
Safety Decals 6 2 1 4 3 7 To order replacement safety labels, call Dosko Customer Service at 1-800-822-0295. All grinder units can be transported via trailers or with the purchase of an optional towing kit package can be towed behind the vehicle.
Receiving Your Unit 1. Receiving Your Unit For all Units You should inspect the grinder immediately after you receive delivery. See the "Machine Component Identification" section of this manual for a diagram of the grinder and its components. New Unit: Truck Delivery If you have missing components, contact your rental company or Dosko Customer Service at 1-800-822-0295. Depending on your unit and model, it may have been shipped on a wooden skid, cardboard container or other appropriate method.
Machine Component Identification Reference # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description Operator Presence Handle Bar Throttle Control Lever Handle Bar Adjustable Brake Lever Manual Storage T-Handle Knob Engine Starter Grip Tire and Hub Engine On/Off Switch Discharge Flap Cutter Guard Cutter Wheel Disc Cutting Tooth Front Handle Belt Guard 8
Operation 1. Pre-start Check List & Procedures CAUTION: Add engine crankcase oil. A new engine is shipped without oil. You must add the correct amount of oil to engine crankcase or engine will be damaged beyond repair. Before starting the engine you will want to make sure you have completed the following: 1. Marking Underground Utilities 2. Checking Controls 3. Checking Cutting Teeth 4. Checking/Adding Oil 5. Filling Stump Grinder Gasoline Tank 6. Inspecting Fuel System for Leaks 7. Locking Handle Bar 8.
Operation Fill stump grinder gasoline tank Check the gasoline level in the engine's fuel tank. If needed, fill tank with fresh unleaded gasoline from a portable container, after first reading the warnings and instructions below. - Do NOT fill the gas tank to the top. Gasoline may spill when operating on a slope. - Do NOT overfill the gasoline tank. Allow at least 1" of empty space below the fill neck to allow for fuel expansion.
Operation Unlocked Position Locked Position T-handle knob Handle Rubber stop Personal Protection Eyebolt Hinge bracket Use approved protective clothing and approved protective equipment when using the machine. 1) Always wear ANSI-approved and OSHA-compliant safety glasses with side shields and a full-face shield. 2) The use of ear plugs or other hearing protection device is also recommended for persons working within 15-20 feet of the running grinder for longer than a few minutes.
Operation 2. Starting the Grinder After you have completed the pre-start checklist and procedures, you are ready to start the grinder. The following directions detail how to start the engine of your grinder. WARNING: Never attempt to use the grinder without proper protective equipment, particularly eye protection and a full-face shield. To start the grinder: Note: For additional engine starting instructions see your Honda engine manual. 1) Lock handle in the upright position.
Operation Throttle control lever Adjustable Brake lever Operator presence handle bar Handle bar Cutting wheel 3. Stopping the Engine Adjustable brake lever Stop the engine using the following steps: 1. While holding blade off ground, release the operator presence bar. The engine will stop. Wait until the blade completely stops. Lower the blade so it is resting against the ground. 2. Make sure brake is set before leaving the controls, particularly if you are on an incline. 3.
Operation 4. Grinding the Stump WARNING: Flying Debris Hazard Stones, chips, and debris can cause serious injury or property damage. Debris can fly 75 ft in any direction out of the chute. They can bounce off any fixed objects as well and hit operator, bystanders or breakable objects. 1. Set/engage the brake. 2. Pivot the grinder toward the side of the stump, with a fairly light touch feed straight into the stump.
Operation 6. On these larger stumps, DO NOT allow grinder wheels to drop into stump hole. If a hole is in the way of your progress, fill it with chips or change position. CORRECT NOT CORRECT Hole Wheel Chip pile/debris WARNING: Stop engine and set brake before leaving operator's position. KEEP BRAKE ENGAGED except when changing locations. 7. When finished, stop the machine. 8. Pull machine away from stump, and rake chips away from stump. 5.
Operation gasoline to evaporate before starting engine. Gasoline soaked rags are flammable and should be disposed of properly. If gasoline is spilled on your skin or clothes, change clothes and wash skin immediately. 5) Replace gasoline cap securely before starting engine. 6) Store extra gasoline in a cool, dry place in an UL-approved, tightly sealed container.
Operation Inspect grinder Inspect the machine for worn or damaged parts and tighten any nuts or screws that may have become loose. Pay particular attention to the cutting teeth. Choose a storage location Store the grinder in a location that is: - Clean and dry. - Away from sources of heat, open flames, sparks, or pilot lights, even if the grinder's gas tank is empty. Residual gasoline could ignite. - Away from extreme high or low temperatures. - Cover it for extra protection.
Operation Prepare engine for long term (seasonal) storage if needed If you will not be able to start the grinder regularly, you must prepare the engine for long term storage to prevent gum deposits from forming and causing malfunction of the engine. Prepare engine for long term storage by: o Removing all gasoline from the tank and carburetor OR o Adding fuel stabilizer to the gasoline (following manufacturer's instructions) Fuel stabilizer steps: 1. Ensure gas tank is full. 2.
Maintenance & Repair WARNING ALWAYS shut off the engine, make sure the engine is cool, and disconnect the spark plug before cleaning, adjusting, or servicing the grinder. Make sure all guards and shields are replaced before using. Maintenance Perform regular maintenance Perform periodic maintenance as directed in this manual to keep the grinder in safe working condition. Follow safety rules Read and follow these safety rules whenever you will be servicing the grinder: Turn off grinder.
Maintenance & Repair (cont’d) Lubricate Cutter shaft bearings should be greased. The cutter shaft bearing is greased by pumping grease into zerks located on the housing of the bearing. Lubricate after every 20 hours of use. Cutting wheel Grease zerks Bearing Grease Specification Lithium Complex #2 230°C (446°F) Corrosion and Oxidation inhibitors, EP optional 80 Minimum Soap Type NLGI Grade Dropping Point Additives Viscosity Index Check and adjust brake Check that the brake is functioning properly.
Maintenance & Repair (cont’d) Belt Tension Adjustment Note: Belt tension and alignment are inter-related. Do not adjust one without checking the other. 1. 2. 3. 4. 5. 6. 7. 8. Remove belt guard. Loosen (4) engine base (mount) bolts. Loosen lock nuts on tension bolt and alignment bolt. Turn tension bolt clockwise to increase belt tension and counterclockwise to decrease belt tension. Check that the pulleys are aligned using a straight edge.
Maintenance & Repair (cont’d) Stop-Switch Adjustment WARNING: Never attempt to alter, modify or override this switch. If Stop-switch ever needs to be replaced or adjusted follow the below directions. Operator 1. Loosen Hex Nut. presence bar 2. Turn the Linkage Bolt clockwise to lower or counter-clockwise to raise the point of interaction with Stop Switch.
Maintenance & Repair (cont’d) Index Teeth You should index teeth when: They look like this: Rounding Top View Side View Normal Wear To index: Loosen bolt and rotate tooth 1/3 turn. Retighten bolt to 60 ft/lbs. M1® Blueshark™ cutting teeth are tipped with heavy-duty carbide. Carbide retains its sharpness longer; cuts faster and smoother, and can withstand heat better. Though carbide is tremendously hard, it is also reasonably brittle.
Maintenance & Repair (cont’d) Maintenance Schedule CAUTION: Before attempting any maintenance, be sure that the engine is shut off, and spark plug wire is removed, and the engine is cool to the touch! Item (What to check or action req'd) Bearings, Shaft - Grease Belt Tension - Tension Bolts - Tightness Engine – See manual Gasoline – Amount Safety Switches – Operation Warning Decals – Legible Tires, Flaps – Condition Wires, Cables – Condition Cutter Teeth - Sharpness Daily Each Use 10 hours 20 hours 40
Specifications 2961090 ENGINE OPTIONS Make Model CC Rating GENERAL Weight Length /{folded} Height /{folded} Width RPM Operating Type of Fuel Starting Oil Sensor CUTTER WHEEL Diameter Thickness Bearings (Dia.) (2) Teeth (3), carbide tips Cutter Wheel RPM Drive CUTTING CAPACITY Above Grade Below Grade Stump Diameter Replacement tooth sets GROUND TRAVEL Transportation Drive Brake Honda GX200UTQX2 200cc 134 lbs.
Summary of Important Safety Information This section provides a summary of the various safety procedures and measures that have been presented throughout the manual. Keep this summary handy and refer to it to refresh your memory about how to safely use your grinder. WARNING Carefully read and make sure you understand the following safety information before using the grinder.
Summary of Important Safety Information (cont’d) Transporting. During transporting, take precautions to make sure stump grinder will not tip over and cause a fuel leak hazard. Hot exhaust - fires. Exhaust from engine can be extremely hot and cause fire. Position muffler at least 7eet from combustible objects during operation. Fire extinguisher. Keep a fire extinguisher rated "ABC" by the National Fire Protection Association nearby is always recommended when using gasoline operated machinery.
Summary of Important Safety Information (cont’d) Other exhaust dangers. This product contains or emits chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Avoid inhalation of exhaust. Smoking/sparks. Never smoke near the running grinder, and never operate near sources of sparks or flames. Hot muffler. Never touch hot muffler or hot exhaust manifold. Exhaust and engine parts can be very hot and will burn you. Machine's moving parts.
Special Safety Information on Static Electricity Static electricity and filling gasoline: Static electricity can initiate from ungrounded gasoline tanks or containers, from flowing gasoline, and from persons carrying a static electric charge Static electricity on numerous occasions has explosively ignited gasoline vapors that were present during fueling processes, resulting in serious burns to nearby persons.
M2961090 Exploded View – Rev D 30
M2961090 Parts List – Rev D Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Part # 606512 785906 785907 82319 783570 783569 786082 783547 82014 786920 786380 82020 82226 82440 38578 786083 786103 785867 783769 783545 785880 785534 782399 82312 82407 82021 785883 783924 783815 783283 82434 786923 82435 Description Honda GX200 engine Exhaust deflector Screw, exhaust deflector 5/16"-18 set screw Wire lock collar Spring, brake band Brake cable Brake lever 5/16"-1
Limited Warranty Policy August 2010 This warranty is limited to Dosko units distributed by Great Northern Equipment Distributing, Inc. 20195 South Diamond Lake Road, Rogers, MN and sold by dealers or distributors authorized to sell that product. The following warranty applies to Dosko units purchased at retail or placed into rental service on or after August 1st 2010.
Great Northern Equipment Distributing Inc. 20195 S.
