Exmark SG390HN Operator's Manual
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Exmark SG390HN Operator's Manual

Stump grinder
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Form No. 4501-167 Rev A
Stump Grinder
Model No. SG390HN—Serial No. 312000000 and Up
To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Exmark.com.
Original Instructions (EN)

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Summary of Contents for Exmark SG390HN

  • Page 1 Form No. 4501-167 Rev A Stump Grinder Model No. SG390HN—Serial No. 312000000 and Up To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Exmark.com. Original Instructions (EN)

  • Page 2: Introduction

    Authorized Service Dealer occur if you dig into them. or Exmark Customer Service and have the model and serial numbers of your product ready. Figure 1 illustrates the Have the property or work area marked for buried location of the model and serial numbers on the product.

  • Page 3: Table Of Contents

    Safety Improper use or maintenance by the operator or owner Figure 2 can result in injury. To reduce the potential for injury, comply with these safety instructions and always 1. Safety alert symbol pay attention to the safety alert symbol , which means: Caution , Warning , or Danger —personal safety instruction.

  • Page 4: Maintenance And Storage

    • – Never refuel or drain the machine indoors. Ensure that you operate the machine in areas where there are no obstacles in close proximity to the operator. • Check that the operator presence controls, safety switches, Failure to maintain adequate distance from trees, walls, and shields are attached and functioning properly.

  • Page 5: Safety And Instructional Decals

    Make any necessary repairs before restarting. • Use only genuine Exmark replacement parts to ensure that original standards are maintained. Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger.

  • Page 6: Product Overview

    Product Overview 119-4692 1. Warning—stop the engine; use both hand holds to lift the grinder. g014497 Figure 3 1. Throttle lever 8. Cutting wheel 2. Hour meter 9. Belt cover 3. Cyclone air filter 10. Lift 119-4693 4. Choke 11. Fuel Cap 5.

  • Page 7: Parking Brake

    2. Engaged throttle position its capabilities. Contact your Authorized Service Dealer position or Distributor or go to www.Exmark.com for a list of all approved attachments and accessories. Parking Brake The parking brake holds the left wheel from turning to secure the machine and for easy movement of the machine from side to side when grinding the stump.

  • Page 8: Operation

    Operation DANGER In certain conditions, gasoline is extremely Note: Determine the left and right sides of the machine flammable and highly explosive. A fire or explosion from the normal operating position. from gasoline can burn you and others and can damage property.

  • Page 9: Using Stabilizer/Conditioner

    Checking the Engine Oil Level because the fuel system could be damaged. Do not mix oil with gasoline. Service Interval: Before each use or daily Using Stabilizer/Conditioner 1. Tilt the machine so the engine is level, and stop the engine. Use a fuel stabilizer/conditioner in the machine to provide 2.

  • Page 10: Starting And Stopping The Engine

    Starting and Stopping the WARNING Engine Grinding a stump will throw wood chips, soil, and other debris into the air which could injure you or bystanders. Starting the Engine • Always wear eye protection when using the 1. Move the fuel valve to the Open position, all the way machine.
  • Page 11 WARNING A rotating cutting wheel is very dangerous and can cut and amputate hands and feet. Stay at the operating position and be sure that the cutting wheel has come to a complete stop before doing anything else. g014502 Figure 8 8.

  • Page 12: Maintenance

    Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Important: The machine may be tipped backward or by gasoline draining into the crankcase. Should this on its side to facilitate access for cleaning or service, happen, perform an extra oil change on the engine.

  • Page 13: Engine Maintenance

    Engine Maintenance Important: Pump grease in slowly and carefully to prevent damage to the bearing seals. Servicing the Air Cleaner Service Interval: Before each use or daily The cyclone air 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, clean the cyclone housing, air channels, and air intake screen.

  • Page 14: Servicing The Engine Oil

    Oil Type: Detergent oil with an API service of SJ or higher. Crankcase Capacity: 2.1 qt (2 liters) Viscosity: SAE 10W-30 is recommended for general use. Changing the Engine Oil Service Interval: After the first 25 hours Every 100 hours Yearly or before storage 1.

  • Page 15: Servicing The Spark Plug

    Underneath the fuel valve is a sediment cup to catch dirt in the fuel. 1. Move the fuel valve to the Off position, all the way to the left. 2. Unscrew the sediment cup. Make sure not to misplace the o-ring (Figure 13). Figure 14 1.

  • Page 16: Brake Maintenance

    Brake Maintenance Belt Maintenance Adjusting the Drive Belt Adjusting the Parking Brake Tension 1. Loosen the set screw on side of brake lever knob. Turn the knob clockwise to tighten the brake; adjust counter Service Interval: Before each use or daily clockwise to loosen the brake.

  • Page 17: Replacing The Drive Belt

    Grinder Maintenance 6. Lay a straightedge across clutch and flywheel pulleys, tighten belt tension bolt so there is 0.40 inch (1 cm) of flex in the belt when pushing down with 15 lbs (6.8 Checking the Cutting Wheel kg) force, at mid-span (when re-tensioning a belt in use) or with 18 lbs (8 kg) force when installing a new Blades belt (Figure 18).

  • Page 18: Cleaning

    Cleaning Removing Debris from the Machine Regular cleaning and washing will increase the life span of the machine. Clean the machine directly after use, before the dirt hardens. Check before cleaning that the fuel tank cap is properly in place to avoid getting water in the tank. Use care when using a high-pressure sprayer because it can Figure 20 damage warning decals, instruction signs, and the engine...

  • Page 19: Storage

    Storage For storage over 30 days, prepare the unit as follows: 1. Remove dirt and grime from the external parts of the entire unit, especially the engine. Clean dirt and sawdust chips from the outside of the engine cylinder head fins and blower housing. Important: You can wash the unit with mild detergent and water.

  • Page 20: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action The engine will not start. 1. The engine switch is in the Off position. 1. Hold the safety bail against the handle. 2. The fuel shutoff valve is closed. 2. Open the fuel valve. 3.
  • Page 21 Notes:...
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  • Page 24 Exmark. No Claim of breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Exmark mower. There are no other express warranties except for engine and special emission system coverage.

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