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Symptom
Doesn't operate
Motor runs but rear
wheels don't move
Steering doesn't work
Won't turn in one direction
Motor doesn't run
ESC gets hot
Poor run time
and/or sluggish acceleration
Poor range and/or glitching
Slipper won't adjust
7.2V NiMH (LOSB1212)
7.4V LiPo (LOSB9826)
11.1V LiPo (LOSB9827)
This model may only be powered by the stock 6-cell 7.2-volt NiMH battery pack (LOSB1212), a 2-cell 7.4-volt LiPo battery
pack (LOSB9826) or 3-cell 11.1 volt LiPo battery pack (LOSB9827). Please consult the Motor/Battery Chart above for
suggested motor/battery combos. The use of higher voltage battery packs will cause ESC damage and void any warranty.
Consult your local hobby dealer or check www.losi.com.
VEHICLE TROUBLESHOOTING GUIDE
Possible Cause(s)
Battery not charged or plugged in
Receiver switch not "On"
Transmitter not "On" or low battery
Pinion not meshing with spur gear
Pinion spinning on motor shaft
Slipper too loose
Transmission gears stripped
Servo plug not in receiver
Servo gears or motor damaged
Servo gears damaged
Motor plugs loose
Motor wire broken
ESC damaged
Motor over-geared
Driveline bound up
NiMH pack not fully charged
Charger not allowing full charge
Slipper slipping too much
Motor worn out
Driveline bound up
Transmitter batteries low
Transmitter antenna loose
Vehicle battery low
Loose plugs or wires
Drive pin missing in shaft
Spur gear face worn out
Recommended Motor and Battery Chart
4100
4500
(LOSB9458)
(LOSB6457)
(LOSB9459)
x
x
x
x
x
x
Charge battery/plug in
Turn on receiver switch
Turn on/replace batteries
Adjust pinion/spur mesh
Replace pinion gear on motor
Check & adjust slipper
Replace transmission gears
Check and replace drive pin
Check if plug in/in all the way
Replace or repair servo
Replace servo
Plug in completely
Repair or replace as needed
Contact Horizon Hobby Product Support
Use smaller pinion on motor
Check wheels, suspension,
Recharge battery
Try another charger
Check/adjust slipper
Replace motor
Check wheels and transmission
for binding
Check and replace
Check and tighten
Recharge or replace
Check motor and power plugs
Replace drive pin
Replace spur gear and adjust slipper
5000
6000
(LOSB9460)
(LOSB9461)
x
x
x
x
x
Warning
15
Possible Solution(s)
and transmission for binding
7400
8200
(LOSB9462)
(LOSB9463)
x
x
x
x
9400
x
x
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