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Xray XB808 - User Manual

Xray XB808
40 pages
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Questions and Answers

  • D
    David Myers MDAug 16, 2025
    What to do if my Xray XB808 Motorized Toy Car engine starts but then stalls?
    • E
      Elizabeth RosarioAug 16, 2025
      If your Xray Motorized Toy Car engine starts and then stalls, consider the following: * The fuel tank may be empty: fill it with fuel. * Fuel lines, fuel filter, air cleaner, or muffler could be clogged: clean or replace the clogged parts. * The carburetor might not be adjusted properly: readjust the idle and main/slow needle adjusting screw. * The engine may have overheated: allow it to cool down thoroughly and open the main needle adjusting screw 30° turn richer (CCW).
  • S
    Stacy WilliamsAug 20, 2025
    Why is my Xray XB808 hard to control?
    • C
      Chad BeltranAug 20, 2025
      If your Xray Motorized Toy Car is hard to control, check these: * Weak transmitter and/or receiver batteries: recharge or replace the batteries. * Low reception from radio antennas: fully extend the transmitter and receiver antennas. * Servo linkages not adjusted properly: move the servo to neutral, then readjust the linkages.
  • H
    Heather YoungAug 23, 2025
    How to fix bad reaction and response from engine of my Xray XB808?
    • A
      angela30Aug 25, 2025
      To address a bad reaction and response from the engine of your Xray Motorized Toy Car: * Readjust the main/slow needle adjusting screw if the carburetor is not adjusted properly. * Clean or replace clogged parts if fuel lines, fuel filter, air cleaner, or muffler are clogged. * Properly install the pressure line between the muffler and fuel tank if there is low fuel pressure from the muffler.
  • V
    vsmithAug 27, 2025
    What to do if steering does not work properly on my Xray Motorized Toy Car?
    • D
      David WagnerAug 27, 2025
      If the steering on your Xray Motorized Toy Car isn't working correctly: * Recharge or replace weak transmitter and/or receiver batteries. * Check the tightness of steering components and tighten if necessary, in case of bent linkages or driveshafts. * Check the tightness of steering components and tighten if necessary, in case of loose steering components. * Replace damaged parts if there is drivetrain damage.
  • M
    Miss Karen AdamsAug 31, 2025
    How to troubleshoot handling problems with my Xray XB808?
    • S
      santosjohnnyAug 31, 2025
      To troubleshoot handling problems with your Xray Motorized Toy Car: * Rebuild the shocks and replace worn or broken parts if the shocks are not working properly. * Ensure the suspension moves freely and replace worn or broken parts if the suspension is binding. * Use different tires if the current tires are improper.
  • M
    Mr. Jacob DelgadoSep 4, 2025
    Why does the steering feel sluggish or vague on my Xray XB808 Motorized Toy Car?
    • J
      Jennifer GarciaSep 4, 2025
      If the steering on your Xray Motorized Toy Car feels sluggish or vague: * Ensure the suspension moves freely, and replace worn or broken parts if the suspension is binding. * Check the steering servo for damage and wear, and replace/repair if necessary if the steering servo is damaged.
  • R
    Richard LopezSep 8, 2025
    What to do if my Xray XB808 does not drive straight?
    • M
      Mrs. Kristen Anderson MDSep 8, 2025
      If your Xray Motorized Toy Car isn't driving straight: * Ensure the suspension moves freely, and replace worn or broken parts if the suspension is binding. * Adjust steering trim until car drives straight if the steering trim is off-center. * Check and make sure the wheel nuts are properly tightened if the wheels are loose. * Check the steering servo for damage and wear, and replace/repair if necessary if the steering servo is damaged.
  • W
    William SmithNov 11, 2025
    Why won't my Xray XB808 engine start?
    • U
      uosborneNov 11, 2025
      Your Xray Motorized Toy Car engine might not start due to several reasons: * The fuel tank could be empty, or the carburetor isn't primed: fill the fuel tank and prime the carburetor. * A bad glowplug or a dead glowdriver battery: replace the glowplug or recharge/replace the glowdriver battery. * Clogged fuel lines, fuel filter, air cleaner, or muffler: clean or replace the clogged parts. * The engine may be flooded due to over-priming: remove the glowplug and turn the car over to discharge fuel from the cylinder, then test and replace the glowplug if it's defective. * Improper carburetor adjustment: set the idle and main/slow needle adjusting screw to the standard starting position. * Improperly adjusted throttle servo linkage: move the throttle servo to the neutral position ...

Summary

Introduction and Support

Safety Precautions

Crucial safety warnings and precautions for operating the model.

808 Tech Tips

Diff Gear Mesh Adjustment

How to adjust gear mesh for optimal differential performance.

1. Front & Rear Differentials

2. Center Differential

3. Front Transmission

4. Rear Transmission

5. Rear Suspension

6. Rear Suspension

7. Front Suspension

8. Front Suspension

Chassis and Assembly

9. Steering System

10. Center Differential and Brake

11. Fuel Tank and Engine

12. Radio Case and Electronics

13. Shock Absorbers

14. Final Assembly

Throttle Linkage Adjustment

Maintenance and Troubleshooting

Engine Operation and Maintenance

Procedures for preparing, operating, and maintaining the engine.

Troubleshooting Guide

Common problems, their causes, and solutions for the RC car.

Xray XB808 Specifications

General IconGeneral
Drivetrain4WD
SuspensionIndependent
Chassis MaterialAluminum
Shock TypeOil-Filled
Scale1/8
Body MaterialPolycarbonate

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