Written By Doug Smirnoff

Razor MX650 Dirt Rocket Common Problems and Troubleshooting

The Razor MX650 Dirt Rocket is designed for fun off-road rides, packing a high-torque, variable-speed, electric motor to help you blast up hills and conquer trails and bumps on the dirt. Scaled down supercross-inspired styling, with dual suspension and dual-disc brakes, the MX650 is ready to help you push the limits of off-road adventure.

Designed with rear-wheel drive for better traction and balance control, the chain-driven electric motor powers riders up to 17 mph (27 km/h) for up to 40 minutes of continuous use, while the steel frame, double-crown fork, and shatter-resistant fairings mean the MX650 is tough enough for youth riders to have a blast on rough terrain.

Product Details and Features

Key SpecsValue
Product Weight94.51 pounds
Battery Charge Time12 hours
Battery Voltage36 volts
Maximum Operating Range10 miles
Maximum Speed17 miles per hour
Electric Bike ClassificationClass 2
Bicycle TypeChildren’s bike
ColorYellow
Product NameMX650 Dirt Rocket eBike w/ 10 miles Max Operating Range and 17 mph Max Speed
BrandRazor
Bike StyleElectric bikes
Recommended Minimum Age16 years
Assembly RequiredPartial
Model Number15165070
Color CategoryMulti
Product Width13.75 inches
Product Height26.00 inches
Product Length46.50 inches
Maximum Weight Capacity220 pounds
Wheel Diameter16 inches
Batteries IncludedYes
Battery ChemistryLead acid
Removable BatteryNo
Electric Bike Motor TypeRear hub motor
Integrated Light(s)No
Basket IncludedNo
Bicycle Frame DesignStep-over
Brake StyleMechanical disc
Handlebar StyleOther

Causes of Common Problems with the Razor MX650 Dirt Rocket

This section of the article will address possible problems and solutions with the Razor MX650 Dirt Rocket electric bike.

Common Problems and Troubleshooting for Razor MX650 Dirt Rocket

Problem 1: Battery Not Holding Charge

Description: The Razor MX650 Dirt Rocket’s battery seems to drain quickly or doesn’t hold a charge, resulting in reduced riding time.

Cause: Over time, the battery’s capacity may degrade due to repeated charging and discharging cycles.

Troubleshooting:

  1. Check the charging adapter and cable for any damages or loose connections. Replace if necessary.
  2. Make sure the battery is fully charged before each ride by connecting it to the charger for the recommended 12 hours.
  3. If the problem persists, consider replacing the battery with a new one from an authorized Razor dealer.

Problem 2: Motor Not Engaging

Description: The Razor MX650 Dirt Rocket’s motor is not engaging when the throttle is twisted, and the bike doesn’t move.

Cause: This issue may occur due to a faulty connection, damaged motor, or a malfunctioning throttle.

Troubleshooting:

  1. Check the throttle wiring for any loose or disconnected connections. Securely reconnect any loose wires.
  2. Inspect the motor for physical damage or signs of burning. If damaged, it may need replacement.
  3. Test the throttle functionality using a multimeter. If the throttle is faulty, consider replacing it with a new one.

Problem 3: Brakes Not Responsive

Description: The Razor MX650 Dirt Rocket’s brakes do not respond effectively, making it difficult to stop quickly.

Cause: The brake pads may be worn out, or there could be air in the brake lines, reducing brake performance.

Troubleshooting:

  1. Check the brake pads for signs of wear. If they are worn out, replace them with new ones specifically designed for the MX650.
  2. Bleed the brake lines to remove any air bubbles that might be affecting the brake’s performance. Follow the user manual for the correct bleeding procedure.
  3. If the issue persists, inspect the brake calipers for any damages or misalignments. Adjust or replace as necessary.

Problem 4: Loss of Power

Description: The Razor MX650 Dirt Rocket experiences a sudden loss of power while riding, even with a fully charged battery.

Cause: This issue may occur due to a loose wire connection, a faulty throttle, or an overheated motor.

Troubleshooting:

  1. Inspect all wire connections and make sure they are securely plugged in. Tighten any loose connections.
  2. Allow the motor to cool down if it has been used extensively. Overheating can cause a temporary loss of power.
  3. Test the throttle using a multimeter to ensure it is functioning correctly. If faulty, replace it with a new one.

Problem 5: Uneven Tire Wear

Description: The tires of the Razor MX650 Dirt Rocket wear unevenly, affecting the bike’s handling and stability.

Cause: Improper tire inflation, misalignment, or suspension issues can lead to uneven tire wear.

Troubleshooting:

  1. Regularly check and maintain proper tire pressure according to the manufacturer’s guidelines.
  2. Inspect the suspension for any damages or misalignments. Adjust or replace as necessary.
  3. If the problem persists, take the bike to an authorized Razor service center for a thorough inspection and realignment.

Problem 6: Chain Slippage

Description: The chain of the Razor MX650 Dirt Rocket slips or jumps off the sprockets while riding, causing a loss of power and potential damage.

Cause: Chain slippage can occur due to improper tension, a worn-out chain, or misalignment of the sprockets.

Troubleshooting:

  1. Check the chain tension and adjust it to the manufacturer’s recommended specifications.
  2. Inspect the chain for signs of wear or damage. Replace it if necessary with a new chain designed for the MX650 model.
  3. Ensure the sprockets are aligned properly and securely fastened. Adjust or replace any misaligned or damaged sprockets.

Problem 7: Throttle Response Delay

Description: The Razor MX650 Dirt Rocket exhibits a delay in throttle response, making it challenging to control acceleration smoothly.

Cause: A throttle with a high resistance or a malfunctioning electronic controller can lead to delayed response.

Troubleshooting:

  1. Check the throttle for any physical obstructions or dirt that may affect its movement. Clean it if necessary.
  2. Inspect the electronic controller and wiring for any damages or loose connections. Repair or replace if needed.
  3. Consider upgrading to a higher-quality throttle assembly for improved responsiveness.

Problem 8: Excessive Noise

Description: The Razor MX650 Dirt Rocket produces loud or unusual noises during operation, which may indicate mechanical issues.

Cause: Noises can be caused by loose components, worn-out bearings, or misaligned parts.

Troubleshooting:

  1. Tighten all screws, nuts, and bolts to ensure all components are securely fastened.
  2. Check the bearings in the wheels and suspension for signs of wear. Replace any worn-out bearings.
  3. Inspect the chain and sprockets for damage or misalignment, as they can also contribute to noise issues.

Problem 9: Uneven Suspension Performance

Description: The suspension of the Razor MX650 Dirt Rocket feels uneven or unresponsive, impacting the bike’s comfort and handling.

Cause: This issue may arise from an incorrect suspension setup, damaged suspension components, or worn-out shocks.

Troubleshooting:

  1. Adjust the suspension according to the manufacturer’s recommendations based on the rider’s weight and terrain.
  2. Inspect the suspension forks and shocks for any leaks, damages, or worn-out parts. Replace if necessary.
  3. Ensure that all suspension components are properly lubricated for smoother operation.

Problem 10: Acceleration Jolts

Description: The Razor MX650 Dirt Rocket experiences sudden jolts or jerks during acceleration, affecting the riding experience.

Cause: Incorrect throttle application, motor controller issues, or damaged drivetrain components can cause this problem.

Troubleshooting:

  1. Practice smooth and gradual throttle control to minimize sudden accelerations.
  2. Check the motor controller and wiring for any defects or loose connections. Repair or replace as needed.
  3. Inspect the drivetrain components, such as the chain and sprockets, for damage or misalignment. Adjust or replace if necessary.

Problem 11: Brake Noise

Description: The brakes of the Razor MX650 Dirt Rocket produce squealing, grinding, or unusual noises when applied.

Cause: Brake noise can occur due to dirty or glazed brake pads, misaligned brake calipers, or worn-out brake components.

Troubleshooting:

  1. Inspect the brake pads for any contaminants or glazing. Clean or replace them as necessary.
  2. Check the brake calipers and ensure they are properly aligned with the brake rotor. Adjust if needed.
  3. Examine the brake components for signs of wear or damage. Replace any worn-out parts with genuine Razor MX650 replacements.

Problem 12: Frequent Flat Tires

Description: The Razor MX650 Dirt Rocket experiences frequent flat tires, causing interruptions in the riding experience.

Cause: Punctures from sharp objects, improper tire inflation, or damaged tire sidewalls can lead to flat tires.

Troubleshooting:

  1. Inspect the tires for any visible punctures or foreign objects embedded in the tread. Remove and patch any punctured areas.
  2. Check the tire pressure regularly and maintain it within the recommended range to prevent pinch flats and improve tire durability.
  3. Examine the tire sidewalls for cracks or damage. Replace the tire if the sidewalls are compromised.

Problem 13: Loose Handlebars

Description: The handlebars of the Razor MX650 Dirt Rocket feel loose or wobbly during rides.

Cause: This issue can arise from loose handlebar clamps, stem bolts, or a worn-out headset.

Troubleshooting:

  1. Tighten the handlebar clamps and stem bolts to ensure a secure connection with the bike’s frame.
  2. Check the headset bearings for play or wear. Adjust or replace them if necessary.
  3. Consider upgrading to a higher-quality handlebar and stem assembly for improved stability.

Problem 14: Excessive Vibration

Description: The Razor MX650 Dirt Rocket experiences excessive vibration, leading to discomfort during rides.

Cause: Excessive vibration can be caused by misaligned wheels, unbalanced tires, or loose components.

Troubleshooting:

  1. Check the wheels for proper alignment and adjust if necessary to reduce vibration.
  2. Inspect the tires for any irregularities or imbalances. Balance the tires or replace them if needed.
  3. Tighten all screws, nuts, and bolts on the bike to ensure all components are securely fastened.

Problem 15: Flickering Lights

Description: The lights of the Razor MX650 Dirt Rocket flicker or intermittently turn on and off.

Cause: Flickering lights can result from loose connections, a faulty switch, or a weak battery.

Troubleshooting:

  1. Check all wiring connections related to the lights and secure any loose connections.
  2. Inspect the light switch for any defects or malfunctions. Replace it if needed.
  3. Ensure the battery is fully charged and in good condition to power the lights consistently.

Problem 16: Uneven Braking

Description: The Razor MX650 Dirt Rocket experiences uneven braking performance, with one brake applying more force than the other.

Cause: Uneven braking can result from imbalanced brake calipers, unequal brake pad wear, or misadjusted brake cables.

Troubleshooting:

  1. Check the brake calipers for proper alignment with the brake rotors. Adjust as needed to achieve even contact.
  2. Inspect the brake pads on both sides and replace any excessively worn pads to ensure equal braking force.
  3. Adjust the brake cables to ensure both brakes engage simultaneously and with equal force.

Problem 17: Loose Chain

Description: The Razor MX650 Dirt Rocket’s chain is loose and frequently derails from the sprockets.

Cause: A loose chain can result from improper tension adjustment, worn-out chain components, or damaged sprockets.

Troubleshooting:

  1. Adjust the chain tension according to the manufacturer’s guidelines to prevent it from being too loose or too tight.
  2. Inspect the chain for any stretched links or damaged sections. Replace the chain if necessary.
  3. Check the sprockets for any signs of wear or misalignment. Replace any damaged or worn-out sprockets.

Problem 18: Overheating Motor

Description: The motor of the Razor MX650 Dirt Rocket gets excessively hot during operation.

Cause: Overheating can occur due to prolonged use, high ambient temperatures, or a malfunctioning motor.

Troubleshooting:

  1. Allow the motor to cool down before continuing to ride, especially during extended usage.
  2. Check for any obstructions around the motor that may be blocking airflow. Clear any debris if found.
  3. Inspect the motor and wiring for any signs of damage. Repair or replace any faulty components.

Problem 19: Loose Bolts and Fasteners

Description: The Razor MX650 Dirt Rocket experiences frequent loosening of bolts and fasteners throughout the bike.

Cause: Constant vibrations during riding can cause bolts to become loose over time.

Troubleshooting:

  1. Regularly check and tighten all bolts and fasteners on the bike, especially after each ride.
  2. Use thread-locking adhesive on critical bolts to prevent them from loosening due to vibrations.
  3. Inspect the bike frame and components for any cracks or damages that might contribute to bolt loosening. Repair or replace as needed.

Problem 20: Charger Malfunction

Description: The Razor MX650 Dirt Rocket’s battery charger fails to charge the battery or exhibits other malfunctions.

Cause: Charger malfunctions can result from a damaged charger, faulty electrical outlet, or issues with the battery.

Troubleshooting:

  1. Check the charger’s power cord and connections for any damages. Replace the charger if necessary.
  2. Test the electrical outlet with another device to ensure it is functioning correctly.
  3. Inspect the battery and charging port for any defects or damages. Clean or repair as needed.

Problem 21: Unresponsive Power Switch

Description: The power switch of the Razor MX650 Dirt Rocket becomes unresponsive, making it difficult to turn the bike on or off.

Cause: A faulty power switch or loose wiring connections can lead to this issue.

Troubleshooting:

  1. Inspect the power switch for any physical damages or defects. Replace the switch if necessary.
  2. Check the wiring connections to the power switch and ensure they are securely attached. Repair any loose connections.
  3. Consider upgrading to a higher-quality power switch for improved reliability.

Problem 22: Unstable Ride

Description: The Razor MX650 Dirt Rocket feels unstable and wobbly during rides, affecting rider confidence and control.

Cause: Loose or worn-out components, improper tire inflation, or misaligned wheels can contribute to an unstable ride.

Troubleshooting:

  1. Tighten all screws, nuts, and bolts on the bike, especially in critical areas such as the frame and handlebars.
  2. Inspect the tires for proper inflation and adjust as needed to achieve the recommended tire pressure.
  3. Check the wheel alignment and adjust if necessary to ensure both wheels are aligned correctly.

Problem 23: Faulty Electronic Display

Description: The electronic display on the Razor MX650 Dirt Rocket, which shows speed or battery level, malfunctions or displays incorrect information.

Cause: Electronic display issues can arise from a damaged display screen, faulty wiring, or a malfunctioning electronic controller.

Troubleshooting:

  1. Inspect the electronic display for any physical damages or defects. Replace the display if necessary.
  2. Check the wiring connections to the display and ensure they are securely attached. Repair any loose connections.
  3. If the problem persists, inspect the electronic controller for any malfunctions or damages. Repair or replace as needed.

Problem 24: Inconsistent Speed Control

Description: The Razor MX650 Dirt Rocket exhibits inconsistent speed control, with sudden changes in speed without throttle adjustment.

Cause: Speed control issues can result from a malfunctioning throttle, electronic controller, or motor.

Troubleshooting:

  1. Test the throttle for any erratic behavior or unresponsiveness. Replace the throttle if necessary.
  2. Check the electronic controller and motor for any defects or damages. Repair or replace as needed.
  3. Ensure that all wiring connections related to the throttle and controller are secure and functioning correctly.

Problem 25: Excessive Wearing of Brake Pads

Description: The brake pads of the Razor MX650 Dirt Rocket wear out quickly, requiring frequent replacements.

Cause: Excessive brake pad wear can be caused by aggressive braking, riding in challenging terrains, or using poor-quality brake pads.

Troubleshooting:

  1. Practice controlled braking to reduce wear on the brake pads. Avoid sudden and harsh braking whenever possible.
  2. Consider upgrading to higher-quality brake pads designed for off-road riding to improve durability.
  3. Inspect the brake calipers for proper alignment with the brake rotors. Adjust as needed to ensure even contact and reduced wear.

Razor MX650 Dirt Rocket Electric Bike User Reviews

Here, we present a compilation of user reviews for the Razor MX650 Dirt Rocket Electric Bike, sourced from the Walmart website. These reviews reflect the experiences and opinions of various customers who have purchased and used the electric bike.

Positive Reviews from Razor MX650 Dirt Rocket Electric Bike Users

  • Many users were satisfied with the smooth and enjoyable riding experience of the Razor MX650 Dirt Rocket. They mentioned that the bike was super fun for both kids and adults.
  • Customers appreciated the bike’s suitable speed and height, making it ideal for children in various age groups.
  • Several users praised the electric bike’s low maintenance, which provided around 40 minutes of continuous use on a single battery charge, reaching speeds of approximately 17 mph.
  • Users commended the bike’s durability and robustness, stating that it was well-built and capable of handling various terrains.
  • Many parents were delighted that their children loved the Razor MX650 Dirt Rocket and enjoyed spending extended periods riding it.

Overall, the majority of users were pleased with the Razor MX650 Dirt Rocket Electric Bike’s performance, build quality, and suitability for riders of different ages.

Negative User Reviews of the Razor MX650 Dirt Rocket Electric Bike

  • Some users expressed dissatisfaction with the bike’s limited power and capability to ride up steep slopes. They found it more suitable for flat and level surfaces.
  • A few customers mentioned squeaky brakes and rough front suspension as minor issues they encountered with the bike.
  • Several users expressed concerns about the size of the bike, feeling it might be too small for taller or heavier riders.
  • One customer reported issues with the power switch, stating it became unresponsive over time.
  • Some users mentioned that the bike’s charge duration varied based on usage, with the battery lasting less than an hour for kids’ riding activities.

Despite some limitations, the Razor MX650 Dirt Rocket Electric Bike received praise for its fun factor, ease of use, and overall performance.

Razor MX650 Dirt Rocket Electric Bike Manual

The operating instructions and user manual for the Razor MX650 Dirt Rocket Electric Bike can be found on the manufacturer’s website. For detailed information on assembly, usage, maintenance, and safety guidelines, users are encouraged to visit the official Razor website and refer to the comprehensive manual provided by the manufacturer.

Razor MX650 Dirt Rocket Frequently Asked Questions

1. How long does the battery last on the Razor MX650 Dirt Rocket Electric Bike?

The battery on the Razor MX650 Dirt Rocket Electric Bike provides up to 40 minutes of continuous use on a single charge, depending on various factors such as rider weight, terrain, and usage patterns. It is recommended to fully charge the battery before each ride to maximize ride time.

2. Is the Razor MX650 Dirt Rocket suitable for riders of different ages?

Yes, the Razor MX650 Dirt Rocket is designed to accommodate riders of various ages. It features an adjustable seat height and handlebar height, making it suitable for both children and adults. However, it is essential to consider the bike’s weight capacity and follow the recommended age guidelines for safe riding.

3. What should I do if my Razor MX650 Dirt Rocket experiences braking issues?

If you encounter braking issues with your Razor MX650 Dirt Rocket, such as squeaky brakes or uneven braking, follow these troubleshooting steps:

  1. Check the brake calipers for proper alignment with the brake rotors. Adjust as needed for even contact.
  2. Inspect the brake pads for wear and tear. Replace any excessively worn brake pads to improve braking performance.
  3. Ensure the brake cables are correctly adjusted to provide equal braking force on both sides.

If the problem persists, consider seeking assistance from a qualified technician or contacting the Razor customer service for further support.

Conclusion

For any issues or problems with the Razor MX650 Dirt Rocket Electric Bike, it is highly recommended to refer to the comprehensive user manual provided by the manufacturer. Additionally, if users encounter any difficulties or require assistance, they should reach out to the Razor customer service or visit an authorized service center for professional support.

Following the proper guidelines and seeking expert help when needed can ensure the best performance and safety of the Razor MX650 Dirt Rocket Electric Bike.

1 thought on “Razor MX650 Dirt Rocket Common Problems”

  1. I just bought one of these for my son.(Mx-650) And he seems to think that you charge it for 12 hours no matter what even if the battery light turns green way before the 12 hours is up.I feel like it’s a fire hazard and that overcharged battery’s will decrease the life of batterys. Also the manual says charge for 12 hours but in the next sentence it says may take 24 hours what are the proper charging parameters.I feel like the manual contains many inaccuracies and contradictory statments that need clarification. Seems like each website and razor all say something diffrent about charging and charging procedures. Any clarification would be greatly appreciated

    Reply

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