TROUBLESHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE
Battery not charged or plugged in
Vehicle does not operate
ESC switch not "On"
Transmitter not "On" or low battery
Pinion not meshing with spur gear
Pinion spinning on motor shaft
Motor runs but wheels
do not rotate
Transmission gears stripped
Drive pin broken
Servo plug not in receiver properly
Steering does not work
Servo gears or motor damaged
Will not turn one direction
Servo gears damaged
Motor wire solder joint is damaged
Motor does not run
Motor wire broken
ESC damaged
Motor over-geared
ESC gets hot
Driveline bound up
Battery pack not fully charged
Poor run time and/or sluggish
Charger not allowing full charge
acceleration
Driveline bound up
Transmitter batteries low
Poor range and/or glitching
Vehicle battery low
Loose plugs or wires
HAMMER REY
ROCK RACER: 1:10 4WD RTR, AVC • INSTRUCTION MANUAL
®
SOLUTION
Charge battery/plug in
Turn on ESC switch
Turn on/replace batteries
Adjust pinion/spur mesh
Tighten pinion gear setscrew on motor shaft flat spot
Replace transmission gears
Check and replace drive pin
Verify the steering servo plug is connected to the receiver steering channel, noting proper polarity
Replace or repair servo
Replace or repair servo
Resolder the motor wire with the proper equipment
Repair or replace as needed
Contact Horizon Hobby Product Support
Use smaller pinion or larger spur gear
Check wheels and transmission for binding
Recharge battery
Try another charger
Check wheels, transmission for binding
Check and replace
Recharge battery
Check all wire connections and plugs
EN
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