MechMaxx EH50 Mini Dumper Operator's Manual

Key Features

• MAX performance, MAX Value, MAX Support
• Backed by decades of proven manufacturing expertise
• Enhanced design features for superior user experience
• Quality metal parts used instead of plastic
• Robust warranty supports all products
• Budget-friendly pricing

Specifications

Overall Dimensions

Width: 30.4" (774mm)

Length: 65.6" (1668mm)

Height: 42.0" (1067mm)

Safety Signs

The rating plate on your machine displays symbols that provide important information about the product and its use. Familiarize yourself with these symbols:

• CAUTION: DO NOT STARE AT OPERATING LAMP
• WARNING: DO NOT USE FOR TRANSPORTING PERSONS.
• WARNING: For safe operation during maintenance, ensure the dumper is on safe ground and securely locked.
• Keep hands and feet away from wheels and moving parts.
• When reversing, ensure the area behind the machine is clear.
• BATTERY POWERED

The control panel includes various indicators and buttons:

• Terminal Block: Connectors for various functions (e.g., A1-A5 for lights, B1-B5 for motor).
• Control Panel Buttons: Includes Battery Switch (ON/OFF), Front Light Button, Light Button, Speed Buttons (1, 2, 3), Voltmeter, and Switch Lock (key ignition).
• Indicators: Battery Level, FC, CE markings.

General Safety Rules

• Read and understand the operator's manual and all labels on the machine.
• Keep the work area clean and well-lit. Avoid operating in explosive atmospheres.
• Keep children and bystanders away.
• Stay alert and use common sense. Do not operate when tired or under the influence of alcohol or medication.
• Wear appropriate personal protective equipment (eye protection, dust mask, non-skid shoes, hard hat).
• Ensure the switch is in the OFF position before connecting the battery or picking up the tool.
• Remove any adjusting key or wrench before turning the tool on.
• Maintain proper footing and balance at all times.
• Dress properly; avoid loose clothing, jewelry, or long hair that could get caught in moving parts.
• Use dust extraction and collection facilities where provided.
• Do not operate the machine in the rain.

Power Tool Use and Care

• Do not force the tool; use the correct tool for the application.
• Ensure the switch functions correctly.
• Store idle tools out of reach of children.
• Maintain tools and accessories; check for misalignment or binding of parts. Have damaged tools repaired before use.
• Use tools and accessories in accordance with instructions and working conditions.
• Keep handles and grasping surfaces dry, clean, and free from oil and grease.

Battery Tool Use and Care

• Recharge only with the specified charger.
• Use only designated battery packs.
• Keep battery terminals away from metal objects to prevent shorting.
• Avoid contact with battery liquid; flush with water if contact occurs. Seek medical help if liquid contacts eyes.
• Do not use damaged or modified battery packs.
• Do not expose battery packs or tools to fire or excessive temperatures (above 130°C / 265°F).
• Follow charging instructions and do not charge outside the specified temperature range.

Service

• Have your power tool serviced by a qualified repair person using only identical replacement parts.
• Never service damaged battery packs; this should only be done by the manufacturer or authorized service providers.
• For battery tools, charge and store the battery pack in an ambient temperature of 18-24°C (65-75°F). Do not charge or store below 0°C (32°F) or above 45°C (113°F).

Specific Safety Rules

• Keep the working area clean and free of debris.
• Operate on flat, level ground.
• Never place body parts where they could be endangered by movement.
• Keep bystanders, children, and pets at least 75 feet (23m) away. Stop the unit immediately if approached.
• Do not mount on the dump box and never carry passengers.
• Never park the machine on unstable ground.
• Disengage the clutch lever before starting the engine.
• Start the engine carefully, keeping feet away from moving parts.
• Never leave the operating position when the engine is running.
• Always hold the unit with both hands and maintain a firm grip on the handlebars.
• Be aware that the machine may unexpectedly bounce upward or jump forward if it strikes buried obstacles.
• Walk, never run with the machine.
• Do not overload the machine capacity. Drive at a safe speed, adjusting to the slope, road conditions, and load weight.
• Exercise extreme caution when reversing or pulling the machine towards you.
• Be cautious on gravel drives, walks, or roads; stay alert for hidden hazards or traffic.
• On soft ground, use the first forward/reverse gear. Avoid rapid acceleration, sharp turns, or sudden stops.
• Be cautious on frozen ground as the machine may skid.
• Avoid driving on unstable terrains like pebble river beds, crushed stone, or uneven surfaces.
• Do not operate in confined areas where there is a risk of crushing.
• Never operate on slopes with an angle over 20°.
• When moving on a slope, ensure weight is evenly balanced. Move parallel to the slope (up or down). Do not shift gears on slopes.
• When tipping the load, be aware of the changing center of gravity and ground conditions for stability. Special hazards exist on soft ground or with sticky loads.

Unpacking the Container

Use a screwdriver and hammer to open all side locks. The electrical wheelbarrow comes partially assembled and shipped in a carefully packed package. Verify all component and hardware quantities are correct before assembly.

Contents Supplied

The package should contain:

• 1x Main Frame
• 1x Dumper Box
• 1x Rear Wheel
• 1x Wheels (pair)
• 1x Handle Bar
• 1x Lighting Lamp

To-Scale Hardware

Hardware graphics are provided at 1:1 scale for identification. Place hardware over the images to verify correct size.

• Hex bolt M8 X 20mm: 3X
• Hex bolt M8 X 25mm: 8X
• Flat washer 8: 11X
• Spring washer 8: 11X
• Spring washer 14: 8X

Assembly

Handle Bar

Mount the right and left handle with M8x25 bolts (See Figure 1). Hardware required: 8X Spring washer 8, 8X Hex bolt M8 X 25mm, 8X Flat washer 8.

Lighting Lamp

Mount the light and fasten it with M8x20 nuts (See Figure 2). Hardware required: 1X Spring washer 8, 1X Hex bolt M8 X 20mm, 1X Flat washer 8.

Front Wheel

Mount the front wheels and fasten them with M14 hub nut and Spring washer 14. Mount the rear wheels and fasten them with Axle sleeve (See Figure 3). Hardware required: 8X Spring washer 14, 8X M14 hub nut.

Rear Wheel

Mount the Rear Axle and fasten it with M8x20 nuts (See Figure 4). Hardware required: 2X Spring washer 8, 2X Hex bolt M8X 20mm, 2X Flat washer 8.

Dumper Box

Mount the dumper box and fasten it with M8 nuts (See Figure 5).

Know Your Machine

Identify the key components of your EH50 Mini Dumper:

• Dumper Box
• Lighting Lamp
• Thumb Throttle Lever
• Control Panel
• Safety Control Lever
• Battery
• 1000W DC motor
• 16x6.5-8 wheel

Safety Control Lever

Squeeze the control lever to engage the clutch; release it to disengage.

Tipping Button

Controls the tipping of the dump box. Refer to detailed instructions for operation.

Light

Use the light when visibility is poor.

Thumb Throttle Lever

The red button controls forward ('F') and reverse ('R') directions. Push forward for forward motion, push further for reverse.

Universal Wheel

To turn right or left, firmly hold the handlebar to control the universal wheels.

Electrical Wheelbarrow Operation

Control Panel

1. Battery Switch: Turns the machine power ON/OFF. Five electricity indicators illuminate when ON.
2. Front Light Button
3. Light Button (on Control Panel)
4. Speed Button: Select speed 1, 2, or 3.
5. Voltmeter
6. Tipping Button
7. Switch Lock: Turn the key to ON/OFF to operate the dumper.

Preliminary Checks Before Driving

• Battery: Check battery status via display.
• Tracks: Check for tension, looseness, or damage.
• Cleaning: Ensure no dirt or debris is present.
• Tightening of parts: Check for loosening and tighten as needed.
• Transmission clutch lever: Check operation.
• Steering clutch levers: Check operation.
• Container box: Ensure it is locked in the lowered position.

Battery Check and Recharge

• Push the tipping handle and hold it in position.
• To raise the hopper, push the tipping handle forward until the desired position is reached. Release to stop.
• To lower the hopper, pull the tipping handle back. Release to return to original position.
• WARNING: Avoid dust or water entering the charging port.
• Charging:
  1. Turn on the battery.
  2. Turn on the dumper with the keys.
  3. Check the battery percentage on the display.

Starting

1. Turn the battery ON.
2. Ensure the transmission clutch is in the STOP position.
3. Turn on the dumper using the keys.
4. Engage the gear (F for forward, R for reverse).
5. Choose the speed (1, 2, or 3).
6. Press the red accelerator lever to operate. Release to brake.

Driving

• Before starting work, check the function of the brakes.
• To avoid loss of control on steep descents, use LOW SPEED (throttle in position 1).
• Use low gear and throttle position 1 on steep descents. Never use reverse gear downhill.
• Be extremely careful during starting, stopping, or steering on slopes.

Load Carrying

• Respect load limits and slope limits.
• Do not position the load to unbalance the center of gravity. Pay attention to load height and width.
• Ensure the load does not protrude from the box or reduce visibility.
• Secure the load with ropes or straps. Do not fasten ropes to other parts of the machine.
• When carrying heavy loads, ensure the load is well distributed and not tilted to prevent tipping.
• Check that the box is locked (side walls and front wall) before operating.
• On soft or uneven ground, reduce speed and pay close attention.
• The turn may be abrupt; ensure the load is well secured. Pay particular attention when steering on slopes.

Load Limits

• Flat terrain: Max load = 1100 lbs, Max load height = 32 inches from the bottom surface of the box.
• Slope condition:
  • Max admissible slope = 15°.
  • Max load = 441 lbs for slopes < 10° (17%).
  • Max load = 221 lbs for slopes between 10° and 15° (17%-26%).
  • Max load height = 12 inches for descent, 20 inches for ascent (from bottom surface of the box).
• On slopes, always drive using first level gear.
• On unstable ground, reduce speed and proceed with caution.
• Downhill, reduce engine speed and use the engine brake.
• Be especially careful when moving or stopping on slopes.
• On steep slopes, avoid gear changes and U-turns.
• Secure the load with ropes. If stability is not achieved, reduce the load.
• Consider reducing load height if visibility decreases on slopes.

Unloading

• Before unloading, stop the machine and ensure the unloading area is clear of people and other objects.
• 1. Take the handle and pull the cable.
• 2. Lift the lever and tilt the box.
• 3. After unloading, return the box to its original position, push the lever firmly, and lock it in the lowered position.

Normal Switch Off

1. Release the accelerator lever to brake and stop the dumper.
2. Turn the ignition key to OFF.
3. Turn the battery switch to OFF.

Emergency Switch Off

1. Release the accelerator lever to brake and stop the dumper. The machine will stop.
2. Turn the battery switch to OFF.

Maintenance

Periodic maintenance and adjustments are required to maintain the machine in good condition. Follow the maintenance schedule.

• Safety Precautions:
  • Stop the machine before any maintenance operation.
  • Wait for hot parts to cool down before maintenance.
  • Maintenance operators must use personal protective equipment (gloves, shoes, glasses).
  • Use recommended products and original spare parts or their equivalent.
• Lubricating the Wheels: Recommended every 100 hours of use for smooth operation.
• Tires: Check lug nuts for security to prevent the tire from coming loose.
• Hardware: Periodically check fasteners for proper tightness and retighten if necessary.
• Wire Connections: Periodically check all wire connections.
• Brake System: Check the carbon brush of the motor for wear and replace if necessary.
• Charger: Regularly examine the charger for damage to the cord, plug, or housing. Do not use a damaged charger.
• Battery: Keep batteries clean and dry. Fully charge batteries before each use. Always charge batteries in the upright position. For best results, charge while installed in the machine.
• Storage (if not used for over 30 days):
  • Fully charge batteries before storage and charge them regularly.
  • Keep batteries clean and dry. Do not store the machine in wet environments.
  • Protect batteries from overheating and flames.
  • Clean the machine exterior with cloths and keep air vents clear.
  • Store the unit on flat ground in a clean, dry, well-ventilated building.
  • Do not expose the wheelbarrow to direct sunlight during storage.
  • Before storing batteries, disconnect them from any electrical circuit and store them in a cool, dry place.
  • Disconnect batteries from the motor unit by separating connectors and cables.

Troubleshooting

Machine does not run, stopped suddenly, short run time, sluggish, or no battery lights:

• Cause: Undercharged battery.
• Remedy: Charge the battery. A new battery requires at least 12 hours of initial charging. Recharge until the green light illuminates.
• Cause: Charger is not working.
• Remedy: Check all connectors, ensure the charger is plugged into the battery box and the outlet. Verify power to the outlet. Contact customer service if you suspect a charger issue.
• Cause: Loose wire or connectors.
• Remedy: Check all wires and connectors, ensuring the motor harness connector is plugged into the battery and there are no loose wires.
• Cause: Dead battery.
• Remedy: Charge the battery as per the owner's manual.
• Cause: Overcharged battery.
• Remedy: Do not charge longer than 30 hours. Contact customer service if damage is suspected.
• Cause: Machine is overloaded or running conditions are too stressful.
• Remedy: Do not overload the machine (max capacity 1100 lbs) and operate in less stressful environments.

Sometimes the machine doesn't run, but other times it does:

• Cause: Loose wire or connector.
• Remedy: Check all wire connections to ensure they are tight.
• Cause: Motor or electrical damage.
• Remedy: Contact customer service for diagnosis and repair.

Battery makes a sizzling or gurgling noise when charging:

• Cause: Normal for batteries to make noise or swell slightly during charging.
• Remedy: No action required. If your battery does not make noise or swell, it does not mean it is not accepting a charge.

One or more tires are flat:

• Cause: Tire has lost air.
• Remedy: Inflate the tire with the proper air quantity.
• Cause: Tire puncture.
• Remedy: Patch or replace the damaged inner tube.
• Cause: Leaky tire air valve.
• Remedy: Replace or tighten the tire air valve.

Machine feels loose or less solid than initial assembly:

• Cause: Hardware has become loose.
• Remedy: Retighten all hardware using tools.