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 15128040
Dirt Rocket MX400 15128030
Version 1_04/11
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BefOre yOu BegIn
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.
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 and may void your
warranty.
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 12 hours for initial charge (see page 4 for charging information).
Charger
(Note: Charger design may vary
from one shown)
Rear Brake Lever
Front Fork
Speed Control
Drive
Chain
required Tools
10mm open wrench
(Included)
5mm and 6mm Allen
wrenches
Screwdriver
(included)
Spoke tightener
(Included)
Bicycle tire pump for
Schrader valves, with
pressure gauge
8mm and 15mm open
wrenches
(Included)
3mm Allen wrench
(Not Included)
(Not Included)
(Not Included)
need Help? Visit our website 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.
2
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asseMBly anD seT-up
q attaching the Handlebars MX350 & MX400
warnIng:
Tools required: 6mm Allen wrench
Failing to properly adjust and
tighten the bolts that affix the
handlebars can cause you to
lose control and crash.
1 Place the handlebars in the
2 Align parallel to the fork and
tighten the bolts using a 6mm
Allen wrench. When properly
tightened, the handlebars should
not move forward or back.
handlebar clamps.
q attaching the front fender
Tools required: 10mm open wrench and 5mm Allen wrench
1Align fender with the hole
in the fork and insert the
bolt. Tighten securely using a
10mm open wrench and 5mm
Allen wrench.
q attaching the number plate
Tools required: Philips screw driver
1 Remove screw from front
fork. Align the number plate
with the hole in the fork and
tighten with a Philips screw
driver.
3
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asseMBly anD seT-up
Note: The pressurized air
q Inflating the Tires
supplies found at gasoline
Tires are inflated when shipped, but they invariably lose some pressure between the point of
manufacturing and your purchase.
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 tire pump equipped for a Schrader valve, inflate both tires to the PSI indicated on the
sidewall of the tire.
BefOre rIDIng
q charging the Battery
Your electric motorbike may not have a fully charged battery; you must charge the battery prior to use.
warnIng:
Rechargeable batteries are
only to be charged under adult
supervision. Always disconnect
your electric motorbike from the
charger before cleaning with
liquid.
• Initial charge time: 12 hours
• Run time: Up to 30 minutes of continuous ride time.
Run time may vary depending on riding conditions,
climate and/or proper maintenance.
• Average battery life: 250 charge/discharge cycles
• To ensure long battery life, do not store the battery
in temperatures above 75° or below -10° F.
• Recharge time: up to 12 hours,
depending on level of depletion.
• Fully charge battery before storing.
• When the motorbike is not in regular use,
recharge the battery at least once a
month until normal use is resumed.
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.
Charger
The charger has a small window
with one LED 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.
Note: Make sure power is
2 Turn power OFF before
1 Plug the charger into a wall
turned OFF when unit is not in
use. If the power switch is left
on for an extended period of
time, the battery may reach a
stage at which it will no longer
hold a charge.
charging. Plug the charger into
the charger port to charge unit.
outlet. If the lights on charger
do not light up, check the power
to the outlet. If necessary, try a
different outlet.
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.
warnIng: Failure
to recharge the battery at least
once a month may result in a
battery that will no longer hold
a charge.
need Help? Visit our website 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.
4
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repaIr anD MaInTenance
Turn power switch “OFF” before conducting any maintenance procedures.
Check the Razor website for any updates on the latest repair and maintenance procedures.
q adjusting the Brakes
Tools required: 10mm open wrench
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.
1 To adjust the tension, 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.
q Testing 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.
q chain and rear Tire replacement
Tools required: 10mm open wrench, two (2) 8mm open wrenches, and two (2) 15mm open wrenches.
2 With a 10mm open wrench,
loosen the brake cable anchor
and disconnect the cable.
1Loosen screws and remove
3 With two 8mm open
chain guard.
wrenches, loosen brake housing
anchor and disconnect. Keep the
spacer and washers together.
5
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repaIr anD MaInTenance
18-3
Chain
Tensioner
18-4
Right Side (Throttle)
18-2 Flat Washer
18-5
18-2
18-3 M10 Flange Locknut
18-6
18-2
18-3
Left Side (Brake)
18-6 Brake Plate
18-5 Spacer
18-4 4mm Washer
18-2 Flat Washer
18-3 M10 Flange Locknut
Note the sequence of the hardware
4 With two 15mm open
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.
Chain
Tensioner
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.
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.
7Install the brake spring and
thread the cable wire into the
cable anchor. Thread the cable
to its original position and
tighten securely.
8Tighten the brake housing
anchor securely. Re-attach the
chain guard. Test ride. Readjust
as needed.
need Help? Visit our website 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.
6
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repaIr anD MaInTenance
q replacing the fuse
warnIng:
To prevent shock, please follow
the instructions accordingly and
do not skip or combine any steps.
Amperage
number
1Remove the battery cover.
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.
2 Locate the fuse box
attached to the batteries. Open
the fuse cover to expose the
fuse.
q checking spoke Tension
Flange
Hub
Flange
Spoke
Flange
19
20
Spoke
Rim
Nipple
1
2
3
Nipple
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.
2 Start 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.
7
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repaIr anD MaInTenance
q chain and sprocket
warnIng:
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 products 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.
To avoid a pinch or injury, keep
fingers away from moving
sprockets and chain.
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.
q Battery 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.
warnIng:
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.
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.
q charger
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 motorbike must not be charged until it has
been repaired or replaced.
warnIng: Battery
posts, terminals and related
accessories contain lead and
lead compounds. Wash your
hands after handling.
Use ONLY with the recommended charger.
q replacement parts
q repair centers
For a list of authorized Razor repair centers:
• Send an e-mail or call 866-467-2967 for the center nearest you.
need Help? Visit our website 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.
8
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TrOuBlesHOOTIng guIDe
problem
possible cause
solution
Motor bike does not run
Undercharged battery
Charge the battery. A new battery should have been charged for at
least 12 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.
Loose wires or connectors
Burned-out fuse
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.
Motor bike was running
but suddenly stopped
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.
Motor or electrical switch damage
Undercharged battery
Contact your local Razor authorized service center for diagnosis and
repair.
Short run time (less than
15 minutes per charge)
Charge the battery. A new battery should have been charged for at
least 12 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.
Tires are not properly inflated
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.
Battery is old and will not accept full
charge
Brakes are not adjusted properly
Riding conditions are too stressful
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.
Motor bike runs
sluggishly
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.
Tires are not properly inflated
Motor bike is overloaded
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.
9
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TrOuBlesHOOTIng guIDe
problem
possible cause
solution
Sometimes the motor
bike doesn’t run, but
other times it does
Check all wires around the motors and all connectors to make sure
they are tight.
Loose wires or connectors
Contact your local Razor authorized service center for diagnosis and
repair.
Motor or electrical switch damage
Normal response to charger use
Charger gets warm
during use
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.
Motor bike does not
stop when applying the
brake
Refer to instructions on page 5 of this manual to properly adjust brakes.
Brakes are not adjusted properly
Chain is too dry
Motor bike makes
loud noises or grinding
sounds
Apply a lubricant such as 3 in 1TM or Tri-FlowTM to the chain.
need Help? Visit our website 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.
10
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MX350 / MX400 parTs
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.)
14.
15.
16.
17.
18.
19.
20.
21.
Charger Port
7.
Front Fork
1.
2.
Handlebar Grip (Right/Left)
Control Module
Kickstand
8.
Front Fender
Single Speed Twist Grip Throttle
9.
Fork Cover (Right/Left)
Battery (2- 12V/ 7Ah)
Fuse
2-1. Sleeve
Motor (24V / 250W)
Rear Wheel Complete
Chain
10.
11.
12.
13.
3.
4 .
5.
6.
Handlebar
Brake Lever Assembly
Handlebar Clamp (Upper/Lower)
Front Wheel Complete
Battery Cover (Right/Left)
On/ Off Switch
Chain Guard
Seat Fairing
11
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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.
12
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safeTy reMInDers
PRE-RIDE CHECKLIST
Loose Parts
Tire Inflation
Check and secure all fasteners before every ride. Make sure
q handlebar clamp bolts are locked properly in place. There should
Periodically inspect the tires for excess wear, and regularly check
q the tire pressure and re-inflate as necessary. If you get a flat tire,
not be any unusual rattles or sounds from loose parts or broken
components. If you are not sure, ask an experienced mechanic to
check.
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
q safety helmet, elbow pads and kneepads. Always wear athletic
Brake
Check the brake for proper function. When you squeeze the lever,
q
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.
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
q
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.
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 12 hours.
failure to follow these instructions may damage
your product and void your warranty.
warranTy
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.
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.
For your records, save your original sales receipt with this manual and write
the serial number below.
__________________________________________
This Limited Warranty will be void if the product is ever:
• used in a manner other than for recreation or transportation;
• modified in any way;
Item Numbers:
MX350 15128040
MX400 15128030
• rented.
The manufacturer is not liable for incidental or consequential loss or damage
due directly or indirectly to the use of this product.
need Help? Visit our website 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.
Printed in China for:
Razor USA LLC
PO Box 3610
Cerritos, CA 90703
Copyright © 2003 - 2011 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. Dirt Rocket is a trademark of Razor USA LLC.
04/2011
13
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