MechMaxx SG380 Operator's Manual

Stump grinder

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WARRANTY
Operator's Manual
www. mechmaxx.com

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Table of Contents
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David
May 8, 2025

How do I get a parts diagram for stump grinder SG380? Thank you!

1 comments:
Mr. Anderson
May 19, 2025

To obtain a parts diagram for the MechMaxx stump grinder SG380, refer to the product manual (PDF) titled "SG380 Product manual 1.0.pdf" mentioned in the context.

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Summary of Contents for MechMaxx SG380

  • Page 1 WARRANTY Operator’s Manual www. mechmaxx.com...
  • Page 3: Table Of Contents

    INSPECT FUEL SYSTEM / CHECK FOR LEAKS WHEELS LUBRICATE CHECK AND ADJUST BRAKE LOWER WELDING PUSH ROD UPPER WELDING PUSH ROD BELT TENSION ADJUSTMENT RUBBER BAFFLE INSTALLING TEETH BASE FOOT MAINTENANCE SCHEDULE KNOW YOUR MACHINE www. mechmaxx.com TABLE OF CONTENTS...
  • Page 4: Specifications

    SPECIFICATIONS Model SG380 Engine Ducar Engine Displacement 420cc Horsepower 15hp Engine Type Single cylinder, 4 stroke, air-cooled, OHV Start E-start Cutting Height 15 in above ground Cutting Depth 10 in below ground Max. Stump Dia. 32 in Rotary Chassis Max. Rotation Angle 65 degrees Max.
  • Page 5: Safety Signs

    ▪ Use of the stump grinder requires considerable Protect windows, autos or any other objects which strength and endurance. It should be operated only by may be damaged by flying debris. an adult with adequate physical capability. www. mechmaxx.com SAFETY SIGNS...
  • Page 6: Safety

    Protect eyes, face, and head from objects that may be the engine (motor) and check immediately for the cause. thrown from the unit. Always wear safety goggles or Vibration is generally a warning sign of trouble. safety glasses with side shields when operating. www. mechmaxx.com SAFETY...
  • Page 7: Engine Safety

    Replace all fuel tank and container caps securely and wipe up spilled fuel. Never operate the unit without the fuel cap securely in place. www. mechmaxx.com SAFETY...
  • Page 8: About Your Grinder

    Never attempt to cut with the machine uphill or downhill from you as it may slide toward you or you may fall toward the machine. Cut only on a slope from the side. www. mechmaxx.com ABOUT YOUR GRINDER...
  • Page 9: Unpaching The Container

    UNPACHING THE CONTAINER Use the screwdriver and hammer to open all the side locks. www. mechmaxx.com UNPACHING THE CONTAINER...
  • Page 10: Contents Supplied

    Your Stump grinder comes partially assembled and contains the following: Upper welding push rod Engine and Drum Wheels Lower welding push rod Tow bar and Guiding wheel Rubber Baffle Base Foot Verify all component and hardware quantities are correct prior to assembling the Stump grinder. www. mechmaxx.com CONTENTS SUPPLIED...
  • Page 11: To-Scale Hardware

    M8 Hex lock nut M12 Flat washer Hex lock nut M14 Hex bolt Hex bolt M6 X 40mm M12 X 55mm Hex bolt M8 X 20mm Hex bolt M16 X 360mm Hex bolt M8 X 25mm www. mechmaxx.com TO-SCALE HARDWARE...
  • Page 12: Assembly

    Hex bolt M16 X 360mm Tow bar and Guiding wheel Use the square lock pin (12×80) to connect the towing bar and the guide wheel to the main body of the machine.( See Figure 4) Figure 2 www. mechmaxx.com ASSEMBLY...
  • Page 13: Rubber Baffle

    M8X25 hex bolts and M8 lock nuts.(See Figure 5) Figure 5 Hex lock nut M8 Hex bolt M8 X 25mm Base Foot IUse the square lock pin (12×80) to connect the base Foot to the main body of the machine.(See Figure 6) Figure 6 www. mechmaxx.com ASSEMBLY...
  • Page 14: Know Your Machine

    KNOW YOUR MACHINE Handle Bar Operator Presence Handle Bar Brake Lever Chassis Lock Lever Engine Safety Bar Cutter Teeth Rubber Baffle Wheels Recoil Starter Handle Throttle Control Choke Control Fuel Shut-Off Valve www. mechmaxx.com KNOW YOUR MACHINE...
  • Page 15: Operation

    (See engine Owner's Manual for oil type and capacity, and more detailed oil check/fill instructions). A leaking fuel line no matter how small can be the source of a fire or explosion when starting or operating the engine. www. mechmaxx.com OPERATION...
  • Page 16: Locking Handle Bar

    Only use the machine in daylight Working During Stay in the OPERATOR POSITION (Behind or in well-lit conditions. Never Daylight Hours the machine) while actuating controls. operate the grinder after dark. Never leave grinder unattended. www. mechmaxx.com OPERATION...
  • Page 17: Starting The Grinder (Recoil Start)

    Debris can fly 75 ft (25m) in any direction out of the chute. They can bounce off any fixed objects as well and hit operator, bystanders or breakable objects. www. mechmaxx.com OPERATION...
  • Page 18: Refueling

    • Store extra gasoline in a cool, dry place in an tightly sealed container. • Filling towable units or portable containers at service stations: Even if you have a towable unit, avoid static electric sparking while filling the gasoline tank: www. mechmaxx.com OPERATION...
  • Page 19: Remove Spark Plug

    3. Run engine at least 10 minutes after adding stabilizer to allow it to enter the fuel system. 4. Shut off engine. 5. Disconnect spark plug wire and remove spark plug. 6. Add one teaspoon oil through spark plug hole. www. mechmaxx.com OPERATION...
  • Page 20: Maintenance

    This bolt will serve as an shut-off valve. adjustment point to counter the tension in the belts, which may cause the engine pulley to be misaligned with the cutter wheel pulley. Note: Set screws in pulley have a torque specification of 25.3kg/m. www. mechmaxx.com MAINTENANCE...
  • Page 21: Installing Teeth

    Thread in the bolt through the cutter wheel and into the teeth as shown, then tighten. Bolt should be torque to 60ft/lbs. Lock nut Tension bolt 90° 90° Lock nut Alignment bolt 2/5" www. mechmaxx.com MAINTENANCE...
  • Page 22: Maintenance Schedule

    Wires, Cables-Condition Cutter Teeth-Sharpness If a part needs replacement, only use parts that meet the manufacturer's specifications. Replace- ment parts that do not meet specifications may result in a safety hazard or poor operation of the grinder. www. mechmaxx.com MAINTENANCE...
  • Page 24 info@mechmaxx.com...

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