Razor Dirt Rocket MX350 User manual

TM
OWNER’S MANUAL
Read and understand this entire manual before riding!
DO NOT RETURN TO STORE!
NOTE: Manual illustrations are for demonstration purposes only.
Illustrations may not reflect exact appearance of actual product.
Specifications subject to change without notice.
Item Numbers:
Dirt Rocket MX350 15128050
Dirt Rocket MX400 15128030
Version 1_01/10

WARNING: Riding an electric motorbike can be a hazardous activity.
Certain conditions may cause the equipment to fail without fault of the
manufacturer. Like other electric products, the Dirt Rocket can and is intended
to move, and it is therefore possible to lose control, fall off and/or get into
dangerous situations that no amount of care, instruction or expertise can
eliminate. If such things occur you can be seriously injured or die, even when
using safety equipment and other precautions. RIDE AT YOUR OWN RISK AND
USE COMMON SENSE.
This manual contains many warnings and cautions concerning the
consequences of failing to maintain, inspect or properly use your electric
motorbike. Because any incident can result in serious injury or even death, we
do not repeat the warning of possible serious injury or death each time such a
possibility is mentioned.
APPROPRIATE RIDER USE AND PARENTAL SUPERVISION
This manual contains important safety information. It is your responsibility to
review this information and make sure that all riders understand all warnings,
cautions, instructions and safety topics and assure that young riders are able
to safely and responsibly use this product. Razor USA recommends that you
periodically review and reinforce the information in this manual with younger
riders, and that you inspect and maintain your children’s product to insure their
safety.
The recommended rider age of 13 years (MX350/MX400) is only an estimate,
and can be affected by the rider’s size, weight or skills. Any rider unable to
fit comfortably on the Dirt Rocket should not attempt to ride it. A parent’s
decision to allow his or her child to ride this product should be based
on the child’s maturity, skill and ability to follow rules.
Keep this product away from small children and remember that this product
is intended for use only by persons who are, at a minimum, completely
comfortable and competent while operating the products.
Do not exceed 140lbs. (63kgs.) total weight on the MX350 and MX400. Rider
weight does not necessarily mean a person’s size is appropriate to fit or
maintain control of the Dirt Rocket.
Do not touch the brakes or electric motor on your electric motor bike when in
use as they can become very hot.
Refer to the section on safety for additional warnings.
ACCEPTABLE RIDING PRACTICES AND CONDITIONS
Always check and obey any local laws or regulations which may
affect the locations where the Dirt Rocket may be used.
Ride defensively. Watch out for potential objects that could catch your
wheel or force you to swerve suddenly or lose control. Be careful to avoid
pedestrians, skaters, skateboards, scooters, bikes, children or animals who
may enter your path, and respect the rights and property of others.
The Dirt Rocket is meant to be used only in controlled environments free of
potential traffic hazards and not on public streets or sidewalks. Do not ride your
electric motor bike in any areas where pedestrian or product traffic is present.
Do not activate the speed control on the hand grip unless you are on the
electric motor bike and in a safe, outdoor environment suitable for riding.
These bikes were manufactured for performance and durability but are not
impervious to damage. Jumping or other aggressive riding can over-stress
and damage any product, including the electric motorbike, and the rider
assumes all risks associated with high-stress activity.
Be careful and know your limitations. Risk of injury increases as the degree
of riding difficulty increases. The rider assumes all risk associated with
aggressive riding activities.
Maintain a hold on the handlebars at all times.
Never carry passengers or allow more than one person at a time to ride the
electric motor bike.
Never use near steps or swimming pools.
Keep your fingers and other body parts away from the drive chain, steering
system, wheels and all other moving components.
Never use headphones or a cell phone when riding.
Never hitch a ride with another product.
Do not ride the Dirt Rocket in wet or icy weather and never immerse the
electric motor bike in water, as the electrical and drive components could be
damaged by water or create other possibly unsafe conditions.
The Dirt Rocket is intended for use on flat, level ground without loose debris
such as rocks or gravel. Wet, slick, bumpy, uneven or rough surfaces may
impair traction and contribute to possible accidents. Do not ride the electric
motorbike in mud, ice, puddles or water. Avoid excessive speeds that can be
associated with downhill rides. Never risk damaging surfaces such as carpet
or flooring by use of an electric motor bike indoors.
Do not ride at night or when visibility is limited.
PROPER RIDING ATTIRE
Always wear proper protective equipment such as an approved safety helmet
(with chin strap securely buckled). A helmet may be legally required by local
law or regulation in your area. Elbow pads and kneepads, a long-sleeved shirt,
long pants and gloves are recommended. Always wear athletic shoes (lace-up
shoes with rubber soles), never ride barefooted or in sandals, and keep
shoelaces tied and out of the way of the wheels, motor and drive system.
USING THE CHARGER
The charger supplied with the electric motor bike should be regularly
examined for damage to the cord, plug, enclosure and other parts, and in the
event of such damage, the bike must not be charged until the charger has
been repaired or replaced.
Use only with the recommended charger.
Use caution when charging.
The charger is not a toy. Charger should be operated by an adult.
Do not operate charger near flammable materials.
Unplug charger and disconnect from bike when not in use.
Always disconnect from the charger prior to wiping down and cleaning your
scooter with liquid.
FAILURE TO USE COMMON SENSE AND HEED THE ABOVE
WARNINGS INCREASES RISK OF SERIOUS INJURY. USE WITH
APPROPRIATE CAUTION AND SERIOUS ATTENTION TO SAFE
OPERATION.
SAFETY WARNINGS
Safety Warnings .................................................................................1
Before You Begin.................................................................................2
Assembly and Set-Up...................................................................... 3-4
Repair and Maintenance................................................................. 5-8
1
Troubleshooting Guide.................................................................. 9-10
Dirt Bike Parts ..................................................................................11
Safety Reminders .............................................................................13
Warranty Information .......................................................................13
CONTENTS

Front Fork
Rear Brake Lever
Remove contents from box. Remove the foam separators that protect the components from damage during
shipping. Inspect the contents of the box for scratches in the paint, dents or kinked cables that may have
occurred during shipping. Because the Dirt Rocket is 95 percent assembled and packed at the factory, there
should not be any problems, even if the box has a few scars or dents.
MAKE SURE POWER SWITCH IS TURNED “OFF” BEFORE CONDUCTING ANY
MAINTENANCE PROCEDURES.
Estimated Assembly and Set-Up Time
Razor recommends assembly by an adult.
Allow up to 30 minutes for assembly.
Allow up to 18 hours for initial charge (see page 3 for charging information).
BEFORE YOU BEGIN
2
WARNING:
DO NOT USE NON-RAZOR
PRODUCTS WITH YOUR RAZOR
DIRT ROCKET. The Dirt Rocket
has been built to certain Razor
design specifications. The
original equipment supplied at
the time of sale was selected
on the basis of its compatibility
with the frame, fork and all
other parts. Certain aftermarket
products may or may not be
compatible.
Required Tools
5mm and 6mm key
wrenches
(Included)
2.5mm key wrench
(Not Included)
Spoke tightener
(Included)
Charger
Charger
Plug
Charger
Port
Screwdriver
Iincluded)
Bicycle-style tire pump for
Schrader valve tires, with
pressure gauge
(Not Included)
Speed Control
Drive
Chain
10mm Wrench
(Included)
8mm and 15mm
Wrenches
(Not Included)
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.

ASSEMBLY AND SET-UP
WARNING:
Failing to properly adjust and
tighten the bolts that affix the
handlebars can cause you to
lose control and crash.
3
1 Place the handlebars in the
handlebar clamps.
2Align parallel to the fork and
tighten the bolts using a 6mm
L-wrench. When properly tight-
ened, the handlebars should not
move forward or back.
1Align fender with the hole
in the fork and insert the
bolt. TIghten securely using
a 10mm Wrench and 5mm
Allen Wrench.
1Remove screw from front
fork. Align the number plate
with the hole in the fork and
tighten with a Philips screw
driver.
qAttaching the Handlebars MX350 & MX400
Tools required: 6mm L-wrench
qAttaching the Front Fender
Tools required: 10mm and 5mm wrench
qAttaching the Number Plate
Tools required: Philips screw driver

4
qCharging the Battery
Your electric motorbike may not have a fully charged battery; you must charge the battery prior to use.
•Initialchargetime:18hours •Runtime:Upto30minutesofcontinuousridetime
•Rechargetime:upto12hours, •Averagebatterylife:250charge/dischargecycles
depending on the level of depletion
WARNING:
Always disconnect your electric
motorbike from the charger
before cleaning with liquid.
Note: If your charger does not
look like the one illustrated,
your unit has been supplied
with an alternative charger.
The specifications and charging
procedure would not change.
The charger has a small window
with one LED or two LEDs to
indicate the charge status.
Refer to the illustration on
the charger unit for the actual
“charging” and “charged”
status indications for your
model charger.
Chargers have built-in over-
charge protection to prevent
battery from being over-
charged.
Charger will get warm during
use. This is normal for some
chargers and is no cause for
concern. If your charger does
not get warm during use, it does
not mean that it is not working
properly.
Be sure to properly align the
groove on the charger input
plug with the corresponding
socket on the case;
otherwise, no charging
action will occur.
Charger
Plug
Charger
Port
ASSEMBLY AND SET-UP
qInflating the Tires
Tires are inflated when shipped, but they invariably lose some pressure between the point of
manufacturing and your purchase.
Note: The pressurized air
supplies found at gasoline
stations are designed to inflate
high-volume automobile tires.
If you decide to use such an
air supply to inflate your tires,
first make sure the pressure
gauge is working, then use very
short bursts to inflate to the
correct PSI. If you inadvertently
over-inflate the tire, release the
excess pressure immediately.
Using a bicycle-style tire pump equipped for a Schrader-type valve, inflate both tires to the PSI indicated on
the sidewall of the tire.
1Turn power OFF before
charging. Plug the charger into
the charger port on the motor
bike.
2Plug the charger into a wall
outlet. If the lights on charger
do not light up, check the
power to the outlet. If neces-
sary, try a different outlet.
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.

1 To adjust the play, thread the
brake lever adjuster in or out 1/4
to 1/2 turn until the desired brake
adjustment is attained. Most
adjustments are complete at this
step. If brake still needs further
adjustment, proceed to step 2.
2 If the brake has too much
slack, use a 10mm open wrench
to loosen the brake anchor
cable for additional adjustment.
WARNING:
The brake is capable of
causing the electric motorbike
to skid the tire throwing an
unsuspecting rider. Practice
in an open area free from
obstacles until you are familiar
with the brake function. Avoid
skidding to a stop as this can
cause you to lose control or
damage the rear tire.
5
REPAIR AND MAINTENANCE
Check the Razor web site for any updates on the latest repair and maintenance procedures.
qChain and Rear Tire Replacement
Tools required: 10mm wrench, two (2) 8mm wrenches, and two (2) 15mm wrenches.
2With a 10mm wrench,
loosen the brake cable anchor
and disconnect the cable.
3With two 8mm wrenches,
loosen brake housing anchor
and disconnect. Keep the spacer
and washers together.
1Loosen screws and remove
chain guard.
qTesting the Brakes
To use the brake, squeeze the lever to increase the pressure on the brake. The brake lever is fitted
with a cable adjuster to compensate for cable stretch and/or to fine-tune the lever movement to brake
engagement. If brake is not engaging properly, follow instructions for adjusting the brakes outlined below.
Turn power switch “OFF” before conducting any maintenance procedures.
qAdjusting the Brakes
Tools required: 10mm open wrench

6
REPAIR AND MAINTENANCE
4 With two 15mm wrenches,
loosen the axle. Push the chain
tensioner down to loosen the
chain and pull the wheel out.
Note: Your hands will get greasy
doing this.
5Install the new chain or
wheel by slipping the chain
around the axle. Slide the axle
into the slots on the frame.
Slide the chain tensioner down
and maneuver the chain onto
the sprocket on the rear wheel
and motor.
7Install the brake spring and
thread the cable wire into the
cable anchor. Thread the cable
to its original position and
tighten securely.
6 To re-attach the brake hous-
ing anchor, align the cable guide
adjuster and install the spacer
and bolt. Do not tighten until
final step.
8Tighten the brake housing
anchor securely. Re-attach the
chain guard. Test ride. Readjust
as needed.
Note the sequence of the hardware
Right Side (Throttle)
Fork
Flat Washer
M10 Flange Locknut
Left Side (Brake)
Fork
Brake Plate
Spacer
4mm Washer
Flat Washer
M10 Flange Locknut
Chain
Tensioner
Chain
Tensioner
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.

7
REPAIR AND MAINTENANCE
qReplacing the Fuse
WARNING:
To prevent shock, please follow
the instructions accordingly and
do not skip or combine any steps.
1Remove the battery cover. 2Locate the fuse box
attached to the batteries. Open
the fuse cover to expose the
fuse.
3Remove the fuse and replace
with a new one of equal
amperage. Requires 30 amp
fuse. Close the fuse cover and
reattach the batery cover.
Amperage
number
qChecking Spoke Tension
1Verify the spoke tension by grasping and shaking each spoke.
Spoke should not be loose from hub. Look for any play between the
spoke flanges where it mates with the hub. Try to turn the nipple
using your fingers. You should not be able to spin any nipple by hand.
If one or more spokes is loose, all spokes should be checked and
tightened with a spoke wrench if needed.
2Start with spoke closest to the
tire valve stem and tighten each
nipple, in sequence, exactly 1/4
to 1/2 turn. A single 1/4 to 1/2
turn may not be enough to bring
the spokes into proper tension.
Continue tightening all spokes no
more than 1/2 turn in sequence
until all spokes are tight.
Note:Morethana1/2turneach
can cause the wheel to become
distorted and wobbly thus perma-
nently damaging the wheel.
Fl
ange
S
poke
N
ippl
e
Hub
Flange
Spoke
Flange
Rim
Nipple
1
2
3
4
20
19

REPAIR AND MAINTENANCE
WARNING:
To avoid a pinch or injury, keep
fingers away from moving
sprockets and chain.
WARNING:
If a battery leak develops, avoid
contact with the leaking acid
and place the damaged battery
in a plastic bag. Refer to the
disposal instructions at left. If
acid comes into contact with
skin or eyes, flush with cool
water for at least 15 minutes
and contact a physician.
WARNING: Battery
posts, terminals and related
accessories contain lead and
lead compounds. Wash your
hands after handling.
8
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.
qChain and Sprocket
The chain will typically have a “loose spot” and “tight spot” corresponding with a particular sprocket
rotational position. This is normal and common to all chain-driven vehicles due to run-out tolerances of the
freewheel and sprocket. The chain should be adjusted to the ideal tension with chain in the tightest spot.
Proper chain alignment must be maintained. The wheel must not be skewed. If the chain is noisy or rough
running, check the lubrication, tension and alignment of the sprockets, in that order.
qBattery Care and Disposal
Do not store the battery in temperatures above 75° F or below -10° F.
CONTAINS SEALED NON-SPILLABLE LEAD BATTERIES. BATTERIES MUST BE RECYCLED.
Disposal: Your Razor product uses sealed lead-acid batteries which must be recycled or disposed of in
an environmentally sound manner. Do not dispose of a lead-acid battery in a fire. The battery may explode
or leak. Do not dispose of a lead-acid battery in your regular household trash. The incineration, land filling
or mixing of sealed lead-acid batteries with household trash is prohibited by law in most areas. Return
exhausted batteries to a federal or state approved lead-acid battery recycler or a local seller of automotive
batteries. If you live in Florida or Minnesota, it is prohibited by law to throw away lead-acid batteries in the
municipal waste stream.
qCharger
The charger supplied with the bike should be regularly examined for damage to the cord, plug,
enclosure and other parts, and, in the event of such damage, the Pocket Rocket must not be charged until it
has been repaired or replaced.
Use ONLY with the recommended charger.
qReplacement Parts
For a complete selection of replacement parts visit www.razor.com.
qRepair Centers
ForalistofauthorizedRazorrepaircenters:
•Checkonlineatwww.razor.com.
•Sendane-mailorcall866-467-2967forthecenternearestyou.

9
Motor bike does not run
Motor bike was running
but suddenly stopped
Short run time (less than
15 minutes per charge)
Motor bike runs
sluggishly
TROUBLESHOOTING GUIDE
Problem Possible Cause Solution
Undercharged battery
Loose wires or connectors
Burned-out fuse
Motor or electrical switch damage
Undercharged battery
Tires are not properly inflated
Battery is old and will not accept full
charge
Brakes are not adjusted properly
Riding conditions are too stressful
Tires are not properly inflated
Motor bike is overloaded
Charge the battery. A new battery should have been charged for at
least 18 hours before using the motor bike for the first time and up to
12 hours after each subsequent use.
Check all connectors. Make sure the charger connector is tightly
plugged into the charging port, and that the charger is plugged into
the wall.
Make sure power flow to the wall outlet is on.
Check all wires and connectors to make sure they are tight.
The fuse will burn out and automatically shut off the power if the
motor is overloaded.
An excessive overload, such as too heavy a rider or too steep a hill,
could cause the motor to overheat. Replace the fuse with a new one
of equal amperage. Correct the conditions that caused the fuse to burn
out and avoid repeatedly burning out fuse.
Contact your local Razor authorized service center for diagnosis and
repair.
Charge the battery. A new battery should have been charged for at
least 18 hours before using the motor bike for the first time and up to
12 hours after each subsequent use.
Check all wires and connectors. Make sure the battery connector is
tightly plugged into the charger connector, and that the charger is
plugged into the wall.
The tires are inflated when shipped but they invariably will lose some
pressure between the point of manufacturing and your purchase. Refer
to instructions on page 4 of this manual to properly inflate tires.
Even with proper care, a rechargeable battery does not last forever.
Average battery life is 1 to 2 years depending on product use and
conditions. Replace only with a Razor replacement battery.
Refer to brake adjustment instructions on page 5 of this manual.
Use only on solid, flat clean and dry surfaces such as pavement or
level ground.
The tires are inflated when shipped, but they invariably will lose some
pressure between the point of manufacturing and your purchase. Refer
to instructions on page 4 of this manual to properly inflate tires.
Make sure you do not overload the motor bike by allowing more than
one rider at one time, exceeding the maximum weight limit, going up
too steep a hill or towing objects behind the vehicle.

Sometimes the motor
bike doesn’t run, but
other times it does
Charger gets warm
during use
Motor bike does not
stop when applying the
brake
Motor bike makes
loud noises or grinding
sounds
Problem Possible Cause Solution
Loose wires or connectors
Motor or electrical switch damage
Normal response to charger use
Brakes are not adjusted properly
Chain is too dry
Check all wires around the motors and all connectors to make sure
they are tight.
Contact your local Razor authorized service center for diagnosis and
repair.
No action required. This is normal for some chargers and is no cause
for concern. If your charger does not get warm during use, it does not
mean that it is not working properly.
Refer to instructions on page 5 of this manual to properly adjust
brakes.
Apply a lubricant such as 3 in 1TM or Tri-FlowTM to the chain.
TROUBLESHOOTING GUIDE
10
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.

11
Keep your MX350/MX400 running for years with genuine Razor parts. Visit our web site or e-mail us for more information on spare part avail-
ability.
(Specifications subject to change without notice.)
MX350 / MX400 PARTS
1. Handlebar Grip (Right/Left)
2. Single Speed Twist Grip Throttle
2-1. Sleeve
3. Handlebar
4 . Brake Lever assembly
5. Handlebar clamp (Upper/Lower)
6. Front Wheel Complete
7. Front Fork
8. Front Fender
9. Fork Cover (Right/Left)
10. Battery (2- 12V/ 7Ah)
11. Fuse
12. Battery Cover (Right/Left)
13. On/ Off Switch
14. Charger Port
15. Control Module
16. Kickstand
17. Motor (24V / 250W)
18. Rear Wheel Complete
19. Chain
20. Chain Guard
21. Seat Fairing

12
SB 1918 (CALIFORNIA) DECLARATION
YOUR INSURANCE POLICIES MAY NOT PROVIDE COVERAGE FOR ACCIDENTS
INVOLVING THE USE OF THIS SCOOTER/ELECTRIC RIDE-ON PRODUCT. TO
DETERMINE IF COVERAGE IS PROVIDED, YOU SHOULD CONTACT YOUR
INSURANCE COMPANY OR AGENT.

Tire Ination
Periodically inspect the tires for excess wear, and regularly check
the tire pressure and re-inflate as necessary. If you get a flat tire,
the inner tube can be patched or a new tube can be purchased
from Razor or an authorized repair center.
Safety Gear
Always wear proper protective equipment such as an approved
safety helmet, elbow pads and kneepads. Always wear athletic
shoes (lace-up shoes with rubber soles), never ride barefooted
or in sandals, and keep shoelaces tied and out of the way of the
wheels, motor and drive system.
Razor Limited Warranty
The manufacturer warranties this product to be free of manufacturing defects
for a period of 90 days from date of purchase. This Limited Warranty does
not cover normal wear and tear, tires, tubes, cables or any damage, failure
or loss caused by improper assembly, maintenance, or storage or use of the
Razor Dirt Rocket.
This Limited Warranty will be void if the product is ever
•usedinamannerotherthanforrecreationortransportation
•modiedinanyway;
•rented.
The manufacturer is not liable for incidental or consequential loss or damage
due directly or indirectly to the use of this product.
WARRANTY
Printed in China for:
Razor USA LLC
PO Box 3610
Cerritos, CA 90703
Copyright © 2003 - 2010 Razor USA LLC. All rights reserved. RAZOR and the Razor Logo
Design are among the registered trademarks of Razor USA LLC in the United States and/or
select foreign countries. 01/2010
Razor does not offer an extended warranty. If you have purchased an
extended warranty, it must be honored by the store at which it was
purchased.
For your records, save your original sales receipt with this manual and write
the serial number below.
__________________________________________
Loose Parts
Check and secure all fasteners before every ride. Make sure
handlebar clamp bolts are locked properly in place. There should
not be any unusual rattles or sounds from loose parts or broken
components. If you are not sure, ask an experienced mechanic to
check.
Brake
Check the brake for proper function. When you squeeze the lever,
the brake should provide positive braking action. When you apply
the brake with the speed control on, the brake cut-off switch will
stop the motor.
Frame, Fork and Handlebars
Check for cracks or broken connections. Although broken frames
are rare, it is possible for an aggressive rider to run into a curb
or wall and wreck and bend or break a frame. Get in the habit of
inspecting yours regularly.
SAFETY REMINDERS
q
q
q
q
q
PRE-RIDE CHECKLIST
DO NOT RETURN TO STORE
Do not use this product for the first time until you have inflated the
tires to the correct PSI and charged the battery for at least 18 hours.
Failure to follow these instructions may damage
your vehicle and void your warranty.
Need Help? Visit our web site for replacement parts, product support and a list of authorized service
centers at www.razor.com or call toll free 866-467-2967 Monday - Friday 8AM - 5PM Pacific Time.
13
Item Numbers:
MX350 15128050
MX400 15128030