Xtreme XB-420M User manual

X-Treme™ Electric Scooters
XB-420M
Electric Mobility Scooter
Read this manual completely before riding.

1
BATTERY MAINTENANCE and CHARGING
INSTRUCTIONS
1. You MUST charge completely prior to initial use. (Follow
charging instructions in your Product Handbook)
2. Charge immediately after each use.
3. Charge before storage. You must charge every 30 days if not
in use.
4. Charge the unit for 6-8 hours or until the light on the charger
turns red & green.
5. DO NOT allow this unit to deep discharge the battery.
6. For safety purposes, DO NOT charge for over 8 hours.
7. Turn the unit OFF when not in use.
This PRODUCT IS NOT INTENDED FOR EXTREME or
OFF-ROAD Use! Please take care of your scooter!
DO NOT JUMP or ABUSE THIS PRODUCT!
DO NOT RIDE IN WET/ICY CONDITIONS!
Failure to follow these instructions will
VOID YOUR WARRANTY
IMPORTANT!
Failure to follow these INSTRUCTIONS will
VOID YOUR WARRANTY!

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WARNING
This product does not conform to Federal Motor Vehicle
Standards and is not intended for operation on public streets,
roads or highways. Serious injury can result from the unsafe
operations of this product. Operator can minimize these risks by
using certain safety equipment such as: safety helmet, goggles,
gloves, elbow and kneepads and appropriate footwear.
DO NOT operate this product in traffic, on wet, frozen, oily or
unpaved surfaces or under the influence of drugs and/or alcohol.
Avoid uneven surfaces, potholes, surface cracks and obstacles.
DO NOT use a water hose to clean this product. See Product
Handbook for more information.
This product is recommended for riders 16 YEARS OF AGE and
older.
SAFETY
Persons without excellent vision, balance, coordination, reflex,
muscle and bone strength and good decision-making
capabilities should not use this product.
Minors without adult supervision should not use this product.
Persons unwilling or unable to take responsibility for their own
actions should not use this product.
The user of this product assumes ALL risks associated with its
use. To minimize these RISKS, the user must wear safety
helmet, goggles, gloves, elbow and kneepads and appropriate
footwear.
This product is ELECTRIC! DO NOT ride this product in wet
conditions, puddles or rainy weather.
IMPORTANT
PLEASE READ THIS BEFORE USING THIS PRODUCT
READ THIS FIRST!

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SAFETY GUIDE
The recommended minimum age for riding this scooter is 16
years old.
To avoid damage to the motor and footplate, do not overload the
scooter.
Never ride with more than one person.
Inspect your scooter thoroughly before each use for loose or
missing parts.
Avoid unintentional starts by turning the scooter off while not in
use.
To avoid the risk of a short circuit in the electrical parts, do not
use your Electric scooter in the rain and never spray or wash off
your scooter with water.
Do not place the battery near fire or heat.
To avoid damage to the battery, do not use the charger if it has
been damaged in any way.
Keep hands, face, feet and hair away from all moving parts.
Do not touch the motor or wheels while they are rotating.
Brakes are designed to control speed as well as stop the
scooter. Practice braking for proper slowing down and smooth
stops.
Maintain your scooter as recommended in this Product
Handbook.
Use only quality replacement parts as recommended by the
manufacturer.
Inspect the entire scooter prior to each use. Replace any part
that is cracked, chipped or damaged before use.
*NEVER ALLOW CHILDREN TO OPERATE THE SCOOTER
WITHOUT ADULT SUPERVISION.
*NEVER ATTEMPT TO OPERATE THE SCOOTER WHILE
UNDER THE INFLUENCE OF ALCOHOL.
If a situation arises that is not covered in the manual,
proceed with caution and use good judgment.
QUICK REFERENCE
SAFETY GUIDE

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Table Of Contents
Table of Contents………………………………………………………………………….. 5-6
Riding Safety …………………………………………………………………………………6
Safety Basics & Operating Instructions……………………………………………..6-8
Wet Weather & Night Riding …………………………………………………………..8-9
Other Reminders…………………………………………………………………………….9-10
Specifications ………………………………………………………………………………..11
Components ………………………………………………………………………………….12-13
Assembly and Setup ……………………………………………………………………… 14-15
Routine Operation ………………………………………………………………………… 15-17
Battery Care and Maintenance………………………………………………………… 17-19
Battery Charging ………………………………………………………………………….. 19-21
Other Maintenance ……………………………………………………………………….. 21
Fuse ……………………………………………………………………………………………. 21
Brakes and Tires …………………………………………………………………………… 21
Lubrication……………………………………………………………………………………. 22
Cleaning………………………………………………………………………………………. 22
Scheduled Maintenance ………………………………………………………………….23
Troubleshooting …………………………………………………………………………….24
How to Guide………………………………………………………………………………… 25-31
DO NOT RETURN TO STORE!
Do not use this vehicle for the first time until you have
inflated the tires to the correct PSI and completely
charged the battery. Failure to follow these instructions
may damage your vehicle and void your warranty.
CALL OR GO ONLINE
1-253-777-0690 www.x-tremescooters.com/support/

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How To Remove Batteries……………………………………………….. 25
How To Adjust Brakes…………………………………………………….. 25
How To Check Motor Armature Contracts…………………………..25-26
How To Remove Rear Brake Assembly……………………………… 26
How To Install Bearings…………………………………………………… 27
How To Adjust Chain Tension………………………………………….. 27
How To Check Throttle Voltage………………………………………… 27-28
How To Check Charger Output………………………………………….28
How To Understand Charger Light Sequence………………………29
How To Replace A Controller…………………………………………….29-30
How To Test Moto Direct To Battery…………………………………. 30
How To Replace Throttle…………………………………………………. 30-31
How To Do Basic System Check For Power……………………….. 31
Troubleshooting Guide…………………………………………………………………… 31-38
Brake Lights…………………………………………………………………….21-32
Scooter Won’t Run, Charger Light Stays Green……………………32
Scooter Won’t Run, Charger Light Stays Red & Green………… 32
Testing Motor Sensors…………………………………………………….. 32-34
Scooter Will Not Turn Off………………………………………………….34
Scooter On, But Will Not Move…………………………………………. 34
Is It My Throttle Or My Controller?...................................... 34-35
Throttle Voltage Test………………………………………………………. 35
Intermitted Power Loss…………………………………………………….35-36
No Power………………………………………………………………………..36-37
After Fully Charger, Powers Only For Short Distance Use……. 37-38
Diagrams……………………………………………………………………………………….39-41
Battery Wiring Diagrams…………………………………………………..39
Wiring Diagram………………………………………………………………. 40
Controller Wiring Diagram……………………………………………….. 41
Warranty ……………………………………………………………………………………… 42

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The XB-420M is a highly stylish, environmentally friendly, fossil-fuel-
free personal transportation device, incorporating these advanced-design
components:
Highly efficient High torque DC motor.
Controller with battery indicator and protection from over
voltage and under voltage.
Brake system with power cut-off, for safe riding.
48V 20Ah high performance battery, delivering stronger current
and longer range.
RIDING SAFETY
This is NOT your typical Mobility scooter!
**This is a fast and powerful scooter that is capable of bringing the front
wheel up and off the ground if not careful. Having the seat slid
completely back as well as the speed control toggle switch on high
increases its ability to “Pop a Wheelie” when the throttle is engaged.
Use caution!
Like any sport, cycling carries the risk of injury and damage. By
choosing to ride the XB-420M, you assume all responsibility for these
risks. Thus, you need to know and practice the rules of safe and
responsible riding.
YOUR INSURANCE POLICIES MAY NOT PROVIDE COVERAGE
FOR ACCIDENTS INVOLVING THE USE OF THIS CYCLE. TO
DETERMINE IF COVERAGE IS PROVIDED YOU SHOULD
CONTACT YOUR INSURANCE COMPANY OR AGENT.
Safety Basics: Do’s and Don’ts
The Do’s
oAlways conduct a Safety Check before you ride your XB-420M. Be
thoroughly familiar with the controls of your XB-420M.
oAlways wear an approved helmet when riding your XB-420M.
Follow the helmet manufacturer’s instructions for fit, use and care of
your helmet.

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oAlways keep body parts and other objects away from the spinning
wheels of your XB-420M.
oAlways wear shoes that will stay on your feet and will stay on the
floorboard.
oWear bright, visible clothing that is not so loose that it can catch on
moving parts of the XB-420M or objects at the side of the road or
trail.
oThink about your speed, and keep your speed consistent with safe
operating conditions.
The Don’ts
oNever ride with headphones. They mask traffic sounds, distract you
from concentrating on your surroundings, and their wires can tangle
in the moving parts of the XB-420M, causing you to lose control.
oNever carry a passenger. The maximum carrying capacity is 350 lbs.
oNever ride barefoot or wearing sandals.
oDon’t jump with your XB-420M. It puts great stress on everything
from frame and forks to drive train. Riders who jumping their XB-
420M risk serious damage to their XB-420M and will void their
warranty.
oNever carry anything which obstructs your vision or your complete
control of the XB-420M or which could become entangled in the
moving parts of the XB-420M.
oNever hitch a ride by holding on to another vehicle.
oNever ride your XB-420M while under the influence of alcohol or
other drugs.
oIf possible, avoid riding in bad weather, when visibility is obscured,
at dusk or in the dark, or when you are very tired. Each of these
conditions increases the risk of accident.
oNever allow children to ride. Never allow others to ride without
reading and understanding these instructions.

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Operating Reminders and Suggestions
oReview all instructions carefully before riding the XB-420M.
oFollow all rules and regulations in your area for operating a
motorized scooter. Obey the same road laws as all other road
vehicles, including yielding the right-of-way to pedestrians, and
stopping at red lights and stop signs.
oRide predictably and in a straight line. Never ride against traffic.
oUse the signal lights to indicate turning or stopping.
oRide defensively. To other road users, you may be hard to see.
oConcentrate on the path ahead. Avoid potholes, gravel and dirt, wet
road, oil, curbs, speed bumps, drain grates and other obstacles.
oBe alert for unexpected events, such as opening car doors or cars
backing out of concealed driveways.
oBe extra careful at intersections and when preparing to pass other
vehicles.
oFamiliarize yourself with all the bike's features. Practice signal
lights, braking and use of the horn.
oDon't carry packages or passengers that will interfere with your
visibility or control of the bike. Don't use items that may restrict your
hearing.
oMaintain a comfortable stopping distance from all other riders,
vehicles and objects. Safe braking distance and forces are subject to
the prevailing weather and road conditions.
Wet Weather Riding
Wet weather impairs traction, braking and visibility, both for the rider
and for other vehicles sharing the road. The risk of accident is
dramatically increased in wet conditions. In wet weather you need to
take extra care. In wet conditions, the stopping power of your brakes
(as well as the brakes of other vehicles sharing the road) is
dramatically reduced. This makes it harder to control speed and easier
to lose control. To make sure that you can slow down and stop safely
in wet conditions, apply your brakes earlier and more gradually than
you would under normal, dry conditions.

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Decrease your riding speed, avoid sudden braking, and take corners
with additional caution. Keep in mind that there is a direct, but
inverse, relationship between speed and controllability.
Be more visible on the road. Wear reflective clothing and use safety
lights.
Potholes and slippery surfaces such as lane markings and train tracks
all become more hazardous when wet.
Night Riding
A rider is very difficult for motorists to see at dusk, at night, or at other
times of poor visibility. If you must ride under these conditions, check
and be sure you comply with all local laws about night riding; follow the
Rules of the Road, and take the following precautions:
Make sure that your XB-420M is equipped with correctly positioned and
securely mounted reflectors. Make sure your clothing or cargo does not
obstruct a reflector or light. Ensure that the front lights are on.
Wear light colored, reflective clothing and accessories, any reflective
device or light source that moves will help you get the attention of
approaching motorists, pedestrians and other traffic.
Ride slowly. Avoid hazards, such as potholes and curbs.
Avoid areas of heavy traffic, dark areas, and roads with speed limit over
35 mph. If possible, ride on routes already familiar to you.
Ride at night only if necessary. Slow down and use familiar roads with
street lighting, if possible.
Other Reminders
The XB-420M works best on level ground. Use caution while going
down an incline, such as a hill or a ramp. Hill climbing and repeated
acceleration/braking will exhaust the battery much more rapidly.
The XB-420M has an electrical brake cutoff system. When you engage
either brake, the throttle becomes inoperative. Release the throttle before
braking. Do not “ride” the brakes.
The battery does NOT require deep discharging. If your XB-420M is put
into storage, re-charge its battery at least once every 90 days.

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Do not store your XB-420M in direct sunlight for an extended time.
Store your XB-420M in a dry place. Exposing your XB-420M to rain,
snow, or other precipitation may result in damage.

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SPECIFICATIONS
Product size (L x W x H): 64” x 28” x 40”
Net Weight: 195 lbs
Carrying capacity: 350 lbs
Maximum range: ~40 miles
Maximum speed: 20 mph
Motor type: Geared brush
Motor power: 500W
Battery: 48V 20 Ah
Battery type: Sealed lead acid battery
Battery cycle life: Approximately 300 cycles
Charger input: AC 110V
Charging time: 2-6 hours
Charger output: 50V/1.8A
Tire size: 16 x 3.0
SPECIFICATIONS
Product size (L x W x H): 64” x 28” x 40”
Net Weight: 195 lbs
Carrying capacity: 350 lbs
Maximum range: ~40 miles
Maximum speed: 20 mph
Motor type: Geared brush
Motor power: 500W
Battery: 48V 20 Ah
Battery type: Sealed lead acid battery
Battery cycle life: Approximately 300 cycles
Charger input: AC 110V
Charging time: 2-6 hours
Charger output: 50V/1.8A
Tire size: 16 x 3.0

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COMPONENTS
1. Battery Storage Access (Tilt Seat Forward) –4 Batteries Total
2. Seat Recline Adjuster
3. Drop Down Arm Rests
4. Forward/Reverse Switch
5. Instrument Panel
6. Throttle
7. Brake Lever
8. Ignition Switch

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1. Brake lever
2. Headlight switch
3. Rearview mirror
4. Instrument Panel
5. Rearview mirror
6. Headlight switch
7. Throttle
8. Ignition switch
9. Forward/Reverse switch
10. Turn Signal
1
2
3
4
5
6
7
8
9
10

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ASSEMBLY AND SETUP
1) With the cardboard, steel frame top & sides, and packing material
removed you are ready to begin assembly. The tools needed for setup are
included in the XB-420M tool kit (located in the compartment under the
seat).
2) Attach the front wheel:
a. Remove the Axel Bolt from the Front Fork from where
it is attached to the steel frame base (be careful not to
loose the carter key as you will be reusing it).
b. Place a solid support about 10” high under the floor
board section to raise the front of the scooter just
enough to easily install the front wheel. Recommend
two people to raise XB-420m.
c. Slide the brake assembly (that is hanging down) into the
wheel cavity.
d. Position the wheel between the forks with the spacer on
the side of the wheel that does not contain the brake
assembly.
e. Slide the axle bolt through the center of the wheel hub.
f. Tighten the nut on the axle bolt and insert the cotter
(safety) pin.
g. Inflate the front and rear tires to 35 psi.
h. With front wheel installed lift and remove the spacer
under the floorboard.
i. Remove the wire ties holding the two rear wheels and
roll XB-420m off of steel frame.
3) To make sure the alignment is correct, stand in front of the vehicle,
using both legs to hold the front wheel in a straight-forward position.
Use both hands to grab the handle bar and turn it into normal driving
position (90 degree angle from the front wheel).
4) Attach the Rear View Mirrors into the mounting holes and carefully
screw on. Use a wrench to tighten the lock nuts at the base of each
mirror when aligned.
5) Check if the brakes are properly adjusted. The brake handles should
stop short of touching the handgrip, when fully engaged. The rear brake
cable can be adjusted in two places:

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At the cable end bracket, just before the lever, with 8
and 10 mm wrench adjustments, and
At the end of the lever, with a 10 mm nut fastener.
The front brake is adjusted at the
end of the cable, at the saddle nut.
6) Install the cargo basket. Attach
the cargo basket to the four bolts on
the back of the seat and secure it tightly.
7) Circuit Breaker. Using the ignition key, open the rear storage
compartment located under the seat. Locate the circuit breaker and
switch it from off to on
8) Your XB-420M has been in transit and storage. You must charge the
batteries before riding it. See page 21 for battery charging instructions.
ROUTINE OPERATION
A) Pre-Ride Check
1) Be sure the tires 35 PSI air pressure. A low tire pressure risk rim
pinching (tube failure), lowers your range (distance per charge)
and may damage the differential.
2) Be sure the battery is fully charged. Riding on a low state-of-
charge will reduce range, and may damage the battery.
3) Verify the front and rear brakes are proper adjusted.

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4) Make sure the XB-420M is in good mechanical order. Visually
inspect and hand-check the vehicle, and snug any loose bolts,
screws, and electrical terminals.
B) Steps to Startup
1) Confirm adjustment of the Rear View Mirrors so that you can
see clearly behind you.
2) Insert the key into the key switch and turn the key from OFF to
ON.
3) The XB-420M has an onboard Voltmeter, indicating the
Battery’s approximate state-of-charge. It is normal for this
reading to “sag” somewhat during acceleration. Excessive
Voltage “sag” is a sign of a depleted or damaged battery. When
a battery is exhausted, if you force it to supply energy, it will
dramatically damage the battery. At this time, the low-voltage
protector will shut off the power automatically, protecting the
battery from further damage.
4) Lights: Light switch is located on the right side of the handle
bars and can be controlled by thumb. Push to center position for
driving lights and to the left position for the headlight.
5) Hold onto the handlebars with both hands. Assume a well-
balanced position. Your right hand will control the throttle.
Twist the throttle slowly to avoid a sudden rush of speed
forward. The speed of the bike will increase as you twist the
throttle. Release the throttle and apply the brakes to stop your
bike. You will control the speed of the bike by using the throttle
and speed control toggle switch along with the brakes. When the
brake handle is squeezed it cuts power to the accelerator.
6) Give the XB-420M some throttle and gradually increase the
speed control toggle switch to adjust maximum speed. Try not
to brake and accelerate needlessly.
7) Return the key to the OFF position and take out the key after
riding, to secure your property and to save battery power.

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Battery Care and Maintenance
What to Expect of Your Batteries, Ideally
The battery is a sealed lead-acid type, with a gel electrolyte. With
normal use, it can last for well over 300 charge/discharge cycles.
Know that normal use should mean partial, and not complete
discharging. If you employ “shallow” discharge cycles, using less than
30% of battery’s capacity, the battery can achieve up to 1,200
charge/discharge cycles.
Thus, it is good to charge the battery after each ride. A partial discharge
will require less time on the chargers.
What to Expect, Realistically
The battery can keep its performance for about 200 charge/discharge
cycles, with high current and deep (80%) discharging. The storage
capacity of the battery will decline after 200 times recharging. If you re-
charge the battery before it is exhausted, you will dramatically extend the
battery’s cycle life.
In Summary
Always try to recharge the Battery Pack within 24 hours after use to
maximize battery cycle life and prevent damage.
What’s Inside Your XB-420M Battery
The Battery is composed of four 12 Volt, 20 Amp-hour capacity
batteries, in series, for a total capacity of 48 V, 20 Ah.
The component batteries are a standard, commercially available size.
Keep three things in mind, however, should you choose to service your
battery.

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1) The batteries are soldered into place. Replacing batteries will
require soldering equipment and skills.
2) Batteries can be extremely dangerous. If allowed to short-
circuit, they can cause burns, create blinding arcs, or explode,
causing serious injury. If you accept this risk, work slowly, and
exercise utmost care! Work with only one wire at one time.
3) Batteries solder, and soldering vapors contain lead, a toxic
substance that can build up in your body. Minimize your
exposure to lead by wearing gloves, providing good ventilation
when soldering, and washing hands after soldering or handling
batteries. You should NEVER simultaneously solder and eat
foods!
Battery Trouble
Should a battery ever leak, do not touch the battery liquid. If you are
exposed to the solution, flush the affected area with water. If you must
handle the battery, wear disposable gloves.
Replace the battery if there are leaks, visible breaks or cracks.
Dispose of used batteries by taking them to a recycling center, or
according to state and local laws.
Battery Temperature Sensitivity
Ambient temperature will affect almost every kind of battery. Usually,
the battery shows good discharging capability at higher air temperature.
When the air temperature is under 0 ºF, the battery power will decline
more than one third. So it is natural that the XB-420M will not reach its
normal mileage in winter or in cold weather. When the air temperature is
up to 68 ºF, the XB-420M will achieve its normal range capability.
When the ambient temperature is over 110 ºF (as when exposed to
summer sunshine for a long period), batteries and other electric
components usually run in an abnormal fashion.
What Does “Maximum Range” mean?

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To determine the XB-420M’s maximum per-charge distance, the testing
environment was:
Rider weight: 180 lbs
Air temperature: 77 ºF
No headwind, smooth, level road, infrequent braking and steady
speed.
Under these conditions, the XB-420M’s maximum range is up to 35
miles.
Frequent braking and acceleration, driving into headwinds, up hills or
with cargo will all cost a lot of battery energy. In these conditions, the
XB-420M will not reach its normal range.
Battery Charging
Be sure to charge the battery completely if you will not use it for a long
period. Ideally, you should charge it every 20 days. Even a healthy
battery will discharge itself slowly. Even with its power off, the XB-
420M Battery state-of-charge will decline gradually over time.
Remember to fully charge the battery before your first ride. The battery
may be low when you receive your new XB-420M.
1) While charging the Battery, keep the key switch OFF.