Rollplay W421 Assembly instructions

Read and understand the entire manual before assembly and operation. The vehicle must be
assembled by an adult who has read and understands the instructions.
Owner’s Manual and Assembly Instructions
Model #: W421
Made in China.
Styles and colors may vary. Do not return to store. Visit us online at www.rollplay.com for
assistance and replacement parts.
IMPORTANT:
Save this manual with your sales receipt.
®
24V MONSTER TRUCK
This vehicle is preset to run at the low
speed of 1.86 MPH. To allow higher
speed please see page 18.

Introduction
Thank you for purchasing this Rollplay vehicle! We hope the rider enjoys
it for miles to come. Please read this instruction guide carefully before
assembling and operating the vehicle.
Please contact Rollplay Customer Service with any questions.
Keep your sales receipt or register your product at www.rollplay.com.
Have your model number and serial number ready before calling. Please
have proof of purchase.
Specifications:
BATTERY 24V 5AH
MOTOR 24V
AGE 3 Years and Up
MAX WEIGHT 35 kg (77 lb)
PRODUCT SIZE 96 x 90 x 130 cm (33.7 x 35.4 x 51.1 in)
FORWARD SPEED
REVERSE SPEED
High speed 6.6 km/h (4.1 MPH )
Low speed 3 km/h (1.86 MPH )
3 km/h (1.86 MPH)
RECHARGE TIME 8-12 Hours
TYPICAL RUN TIME 1-2 Hours
CHARGER OUTPUT DC 24.0V 0.6 A
Hours: 9 AM - 5 PM (CST), Monday - Friday
Phone: [phone]
Email: [email protected]
Web: www.rollplay.com

IMPORTANT!
YOU MUST CHARGE THE BATTERY
FOR 24 HOURS BEFORE FIRST USE!
Charge the battery after each use.
Charge the battery at least once a month, even if the vehicle is not in use.
Read this entire manual to ensure
proper assembly and safe operation
of the vehicle.
BEFORE RETURNING YOUR PRODUCT TO THE
STORE, CONTACT ROLLPLAY WITH QUESTIONS.
E-mail Customer Service if you need assistance or replacement parts.
Please have your model number and serial number ready before calling.
Keep your sales receipt or register your product at www.rollplay.com as
we will require proof of purchase.
[email protected]

4Table of Contents
Safety .......................................................... 5-6
Parts .......................................................... 7
Charging Instructions ............................... 8
Assemble the Exhaust Stack..................... 13
Assemble the Steering Rod ..................... 9
Assemble the Steering Wheel ................... 14
Attach the Seat .......................................... 16
Assemble the Shock Absorbers ............... 10
Assemble the Brush Guard ..................... 15
Assemble the Front Wheels ...................... 11
..........................
Assemble the Rear Wheels ....................... 12
Steering Wheel Batteries 17
Product Features
....................................... 18
Maintenance .............................................. 19
General Care .............................................. 20
Troubleshooting Guide .............................. 21-22
FCC Information ........................................ 23
Service and Repairs .................................. 24
Warranty .................................................... 25
Product Registration ................................. 26

5
Safety
WARNING: SAFETY RIDING RULES
The user must follow all safety rules and guidelines, or serious injury or death may
occur to the user.
• Always use common sense and safe practices when using the vehicle. The user
must be at least 3 years old and weigh no more than 35 kg (77 lb).
• This product contains small parts that are for adult assembly only. Keep small
children away when assembling. Remove and dispose of all protective material
and plastic bags before assembly.
•
Product Safety Commission (CPSC) Standard 16 CFR 1203.
• Do not allow more than one rider.
• Do not overload the vehicle. Do not remove the weight restriction decals.
• Do not pull the vehicle with another vehicle or similar device.
• Keep body parts such as hands, legs, hair and clothing away from moving parts.
Moving parts can cause serious injury.
• Always wear shoes in the vehicle.
• Do not operate near streets or motor vehicles.
• Do not operate near drop-offs such as steps, steep inclines or hills.
•
• Do not operate in dangerous weather conditions such as rain or snow.
•
•
• Always use the vehicle in a safe, secure environment with adult supervision.
PREVENT INJURIES AND DEATHS:
NEVER LEAVE CHILD UNATTENDED. ALWAYS keep child in view when child is in
vehicle. Direct adult supervision is REQUIRED.
NEVER
ALWAYS wear shoes. ALWAYS sit on the seat. RISK OF FIRE. Do not bypass.
Remove batteries if product is to be left unused for a long time; Always replace the
whole set of batteries at one time, taking care not to mix old and new ones, or
batteries of different types.
use in roadways, near motor vehicles,on or near steep inclines or steps,
swimming pools or other bodies of water
Operate on
relatively level ground.
!

6Safety
(Continued)
WARNING: BATTERY SAFETY
•
• Contact exposure to battery leakage (lead acid) may cause serious injury.
Immediately contact your doctor if exposure occurs. If the chemical is on the skin,
immediately give the person water or milk. Do not give water or milk if the person
is vomiting or has decreased alertness. Do not induce vomiting.
•
explosion. It could permanently damage the system. Keep the charger housing
closed to prevent exposed wiring, which may cause electric shock.
IMPORTANT:
charged for a full 24 hours (no more than 30 hours).
WARNING: ADULT SUPERVISION
REQUIRED
• Before using the vehicle, the rider must understand the vehicle controls and safety
issues.
• It is the responsibility of the adult to educate the child and to determine if the child
is capable of understanding the vehicle controls.
• An adult must ALWAYS directly supervise the use of this vehicle.
• NEVER leave a child unsupervised in the vehicle.
!
!
Battery posts, terminals and related accessories contain lead and lead components.
DO NOT open the battery.

7
Parts
• 2 AAA batteries
8
11
2
4
5
5
3
13
12
25
12
14
13
14
10
5
5
1
Helpful Tip:
1. Parts 16-26 are located
in the blister pack
2.
3.
Spare parts: 2 bolts.
Rear wheels are marked
with an "R" and front wheels
are marked with an "F"
• Phillips screwdriver
Not Included:
15
16 17 19
20
21 22
23 24
26
18
28
15. Hex Wrench
16. Steering Wheel Screw M5x50
17. Steering Wheel Nut M5
18. Φ8 Washers (4)
19. Screws M8X38（4）
20. Wrench
21. Brush Guard Screws M6X48 (2)
22. Brush Guard Nuts M6 (2)
23. Bolt ST4.2x15
24. Screw M4x18
25. Screw Nut M4
26. Screw Nuts M8 (4)
27. Φ6 Washers (2)
28. Blister Pack
1. Manual
2. 24V Battery
3. Steering Wheel
4. Exhaust Stack
5. Wheel Covers (4)
6. Front Wheels (2)
7. Rear Wheels (2)
8. Car Body
9. Brush Guard
10. Seat
11. Battery Charger
12. Φ12 Front Washers (2)
13. Φ10 Front/Rear Washers (4)
14. M10 Front/Rear Wheel Nuts (4)
27
6
6
7
7
9

8
Charging Instructions
ONLY AN ADULT SHOULD HANDLE THE BATTERY AND CHARGER.
Connect the Battery:
YOU MUST CHARGE THE BATTERY FOR 24 HOURS
BEFORE THE FIRST USE!
BA
BA
A
C
Charge the Battery:
1. Ensure the vehicle is stopped and turned off.
2. Unlock and remove the seat.
3. Unplug the connnector (A) from the connector (B).
Plug the charger connector (C) into the battery
connector (A). The light on the charger will turn
red to indicate that it is charging. Once the
battery is fully charged, the light will turn green.
Unplug the battery from the charger and
reconnect it to the engine connector (B).
4. Replace and lock the seat.
C
1. Ensure the vehicle is stopped and turned off.
2. Locate the seat lock on the seat, then use a coin
or flat head screwdriver to turn the seat lock to
the unlock position. Remove the seat.
3. Locate the white battery connector (A) that
attaches directly to the battery.
4. Connect the white battery connector to the white
engine connector (B).
5. Replace the seat (see Page 16 for instructions).
Note: Recommended battery charging voltage
should not exceed 30V.

9
Assemble the Steering Rod
90o
1. Place the vehicle upside down on a soft surface and locate
the steering rod hole.
2. Turn the steering rod to 90o,insert the steering rod into the
steering rod hole.
3. Insert the screw (24) though the hole located on the shorter
end of the steering rod and through the hole on the car body,
fasten the nut (25) to the end of the screw.
25
24

10 Assemble the Shock Absorbers
1. Take out the screw (19), washer (18), wrench (20) and
nut (26) from the blister pack.
2. Align the shock absorber (B) with the metal holes.
3. Insert the screw (19) through the holes. Then slide the washer
and screw nut onto the screw.
4. Fasten with a screwdriver and wrench.
5. Repeat steps 1-4 for the other three shock absorbers.
(A)
(B)
20
19
26
18

11 Assemble the Front Wheels
1. Take out the Φ12 front washers (12), Φ10 front/rear washers (13)
and nut (14) from the blister pack.
2. Slide a Φ12 front washer (12) and front wheel onto the axle.
3. Slide a Φ10 front/rear washer (13) and wheel nut (14) onto the axle,
then use the hex wrench (15) to tighten.
4. Snap on the wheel cover by aligning the tabs on the cover with
the slots on the wheel and press until it clicks into place.
5. Repeat these steps for the other front wheel.
12
14
13
Helpful Tip:
1. The side of the
wheel with
rectangular tabs
should face outward
and the side
marked with an "F"
faces inwards.

12
Assemble the Rear Wheels
Helpful Tip:
1. If you encounter trouble fitting both wheels
onto the rear axle, then your rear wheel axle
may need to be realigned.
2. Remove a wheel from the axle. Pull or push
on the axle to slide it until you have enough
room on both sides.
1. Take out the washer (13) and screw (14) from the blister pack.
Slide the rear wheel (7) onto the axle. Ensure that the gears
on the wheel connect with the gearbox.
2. Slide a Φ10 rear washer (13) onto the axle.
3. Slide a wheel nut (14) onto the axle, then use the hex wrench to
tighten.
4. Snap on the wheel cover by aligning the tabs on the cover with
the slots on the wheel.
5. Repeat these steps for the other rear wheel.
14 13

13
Assemble the Exhaust Stack
1. Place the square piece of the exhaust stack in the square slot
on the car body, then use a screwdriver to secure it with
the 4.2 x 15 bolt (23).
23

10 Assemble the Steering Wheel
1. Locate the steering wheel screw (16) and nut (17) from the
blister pack (27).
2. Align the steering wheel (3) with the steering rod, and insert it into
the rod.
3. Align the holes on the steering wheel (3) with the holes on the
steering rod.
4. Insert the steering wheel screw (16) through the steering wheel (3) and
steering rod. Insert the nut (17) into the other side of the steering
wheel (3).
5. Fasten the screw (16) with a screwdriver.
17
16
14

1. Locate the brush guard, 2 M6x48 screws (21), 2 Φ6 washers (27)
and 2 M6 nuts (22). The screws and nuts are located in the blister
pack.
2. Align the holes on the brush guard with the holes on the metal frame
under the front bumper.
3. Insert the Φ6 washers (27) and screws into the holes through the
brush guard and frame, then secure them with the nuts.
21
22
27
15
Assemble the Brush Guard

1. Make sure the seat lock is turned to the unlocked position.
Slide the tab on the back of the seat into the slot on the car body.
2. Align the seat over the battery compartment. Ensure the
locking mechanism aligns with the hole on the car body.Then,
slide the seat into position.
3. Turn the seat lock clockwise until it is in the locked position to
properly secure in place. The image above shows the seat lock in
the locked position.
2
1
16
Attach the Seat

17
Steering wheel requires 2 x AAA batteries
WARNING!
DO NOT mix old and new batteries.
DO NOT mix alkaline, standard (carbon-zinc) or
rechargeable (nickel-cadmium) batteries.
Steering Wheel Batteries
1. Open the battery compartment cover with a screwdriver.
2. Insert the two AAA batteries into the battery compartment.
3. Replace the battery compartment cover and secure the cover with
a screwdriver.

18 Product Features
Shifter
Pedal
Power Button Sound Buttons
Power Button
Push the Power Button to turn the vehicle ON/OFF. The Power Indicator Light will
turn on when the car is on.
Shifter
Pull the Shifter up to move forward. Pull the Shifter down to reverse.
Foot Pedal
Press the Foot Pedal down to move. The vehicle will stop when the Foot Pedal is
released.
Sound Buttons
Press the Sound Buttons on the steering wheel for horn and engine sounds.
High Speed Lock Out
To limit your child's speed while using the vehicle, you can turn on the High Speed
Lock Out feature. Remove the seat and locate the control board (pictured above).
On the bottom corner of the control board is a small switch to control the speed.
Move the switch to Diagram A's position for high speed, 6.6 km/h (4 MPH).
Move the switch to Diagram B's position to limit the vehicle to low speed,
3 km/h (1.86 MPH).
Please note that the vehicle only travels at 3 km/h (1.86 MPH) when moving in
reverse.
Headlights
The Headlights will turn on automatically when the vehicle is in motion.
AB
High Speed Lock Out

19
Maintenance
Important Battery and Charger Information
• Only an adult who has read and understands the safety warnings may
handle and operate the battery and battery charger. Keep away from
children.
•
time.
• Recharge the battery immediately after each use. Charge for at least
8-12 hours, but no more than 20 hours.
• Charge the battery at least once a month, even if the vehicle is not used
or stored.
• Never leave the battery in a discharged condition.
• Connect the terminal of the battery and charger, then plug the charger
into a 120V AC outlet.
• It is normal for the charger to heat slightly. If the charger rises above
71°C / 160°F, disconnect the charger and call Customer Service for
assistance.
• Keep the charger away from water or excessive moisture to prevent
short-circuiting.
• Do not charge the
battery with any other charger.
• Do not attempt to recharge non-rechargeable batteries with the original
charger.
• Do not replace the battery with any other battery, or the warranty
will be voided. If you need a replacement battery, see Page 24 for
replacement information.
• Remove damaged batteries from the car immediately. Recycle or
dispose of the used batteries responsibly.
• Do not short circuit the supply terminals.
• Do not leave the battery connected in the vehicle for extended periods
of time when the vehicle is not being used. Disconnect the battery
connector from the engine connector before storing.
• The vehicle is equipped with a thermal fuse to protect the electric
circuit. If the vehicle cuts out, turn the vehicle off and on to reset.

20
General Care
• Regularly inspect all vehicle parts to ensure they are in good working
condition.
• Regularly inspect the charger, cord, plug, and other related parts for
damage.
• Remove any damaged parts and immediately contact Customer Service
for replacement parts. See Service and Repairs on Page 24 for more
information.
• DO NOT operate the vehicle if there are any damaged parts.
• Carefully clean the vehicle with a damp cloth and mild soap. Do not
get water in or near any electrical parts. Do not wash the vehicle with a
hose.
• Store the vehicle indoors or use a tarp to cover it. Keep away from
stoves, heaters, or other sources of heat.