EDU Science 125EL Users Manual

Revision: 2nd Revision 4/11/05

INSTRUCTION MANUAL for 1:18 RADIO CONTROL ROCK CRAWLER

IMPORTANT INFORMATION

- Carefully read this manual for important safety information and operating
instructions before using your Rock Crawler.

- This Rock Crawler is not intended for children under 6 years old.

- Battery pack is not charged when newly purchased. Battery pack must be charged
for 8 hours for the first and second charges. Subsequent charges require only 4
hours.

- Even with proper care, the battery will not last forever. The life of the battery
depends on how well you follow the Battery Charging instructions and the total
number of hours the battery is used.

- While the battery is charging, the charger may become warm to the touch. This is
normal, and does not indicate a problem.

- This toy must only be used with the recommended charger.

- Do not leave the Rock Crawler out in the rain or let your child wash it with soap
and water.

- Do not store your vehicle near heat or in direct sunlight. Always turn switches
OFF and remove all batteries for storage.

- This unit requires one 7.2V 600mAh rechargeable battery pack (included) for the
vehicle and one 9 volt battery (not included) for the transmitter.

- Parental guidance is recommended when installing or replacing batteries.

- For the transmitter: New and alkaline batteries are recommended to use in this toy
to obtain best and maximum performance.

- You are advised to recharge the battery pack as soon as the function becomes
impaired.

- Users should keep and retain this information for future reference.

- Users should keep strict accordance with the instruction manual while operating
the product.

- FCC Note: The manufacturer is not responsible for radio interference caused by
unauthorized modifications to this equipment. Such modifications may void the
user’s authority to operate the equipment.

FEATURES

- Full function radio control vehicle with forward, backward and steering.

- 4 band user selectable at each frequency.

- Flexible suspension and powerful steering for rock crawling.

- 2-speed gear shifting. ( High gear: Smooth surface or racing)

(Low gear: Rough surface or climbing)

CONTENTS

• Rock Crawler vehicle

• Transmitter

• 7.2V 600mAh NiCd battery pack

• AC/DC charger

• Instruction manual

BATTERY CHARGING

Battery pack is not charged when newly purchased. Battery pack must be charged
for 8 hours for the first and second charges. Subsequent charges require only 4
hours.

1. Plug the charger into a standard 110/120V indoor electrical outlet.

2. Connect the battery pack and charger cables by snapping together the jack and the

3. After charging, the battery pack will be warm. This condition is normal for fully

4. To disconnect cables, press down on the clip and pull apart. (see diagram)

CAUTION:

socket tightly. (see diagram)

charged batteries. If the speed of the car slows down suddenly, it is time to
recharge.

• Do not recharge warm or hot battery packs. Wait 20 minutes until battery
pack has cooled.

• Do not charge the battery that shows leakage or corrosion.

• Recharging near fire or high temperature is dangerous.

• Do not dispose of the batteries in fire.

• Always unplug battery pack when not in use.

• Always remove battery pack from vehicle before charging.

• Dispose of NiCd battery packs properly, do not disassemble.

• Do not use charger for any use other than instructed in directions.

• Non-rechargeable batteries are not to be recharged.

• Rechargeable batteries are only to be charged by an adult.

• Do not mix different types of batteries or new and used batteries.

• Batteries are to be inserted with correct polarity.

• The supply terminals are not to be short-circuited.

NOTE: You may wish to purchase further rechargeable batteries and battery chargers
for longer play sessions. See the order form for more details.

BATTERY INSTALLATION IN TRANSMITTER

1. Unscrew the battery cover at the bottom of the transmitter and place a 9-volt
battery inside following the engraved signs (see diagram).

2. Replace the battery cover.

BATTERY INSTALLATION IN VEHICLE

1. Unscrew the battery cover at the bottom of the vehicle and place the battery pack
inside the battery compartment.

2. Plug the battery connector into the motor harness connector.

3. Please note: if the battery connector will not plug into the motor harness
connector, turn it over and try again! Do not force the battery connector into the
motor harness connector.

4. Replace the battery cover by tightening the screw.

CARE, MAINTENANCE AND YOUR SAFETY

It is recommended that this toy and all accessories be periodically examined for potential
hazards and that any potentially hazardous parts be repaired or replaced.

- Always operate away from areas which can cause radio interference, (eg. power lines,
tall buildings.)

- DO NOT operate near concrete walls which may disturb transmission.

- DO NOT drive car through water or in sand.

- DO NOT bend the antenna.

- Make sure ON/ OFF switch on your vehicle is in the “OFF” position when it is not in
use.

- DO NOT leave the vehicle or transmitter near sources of heat or in direct sunlight for
long periods of time.

- Remove the batteries from the vehicle and transmitter when they are not in use.

- Brush areas where dirt and dust get trapped.

- Wipe body off with a soft rag or damp cloth.

- DO NOT clean vehicle with chemicals or water.

Parents must pay serious attention to handling the rechargeable battery properly: