Baja motorsports BA50 User manual

Always wear a helmet; It could save your Life!
Please obtain, review, and follow provincial / municipal government acts
and regulations pertaining to owning and operating an off-road vehicle.
Minimum Age Requirement: 6
REV.D
030209
BA50
Read this manual carefully. It contains important safety information.
Children under the age of 16 should be supervised by a responsible adult.
OWNER’S MANUAL
For More information on ATV Safety Contact
the Baja ATV Safety Hotline at: 866-260-8630

“YOUR ATV CAN BE HAZARDOUS TO OPERATE. A
collision or rollover can occur quickly, even during
routine maneuvers such as turning and driving on hills or
over obstacles, if you fail to take proper precautions.
For your safety, understand and follow all the warnings
contained in this owner’s manual and the labels on your
vehicle. Failure to follow these warning can result in
SEVER INJURY OR DEATH.
Keep the owner’s manual with your vehicle at all times.”
Failure to follow the age recommendations for this ATV.
Failure to supervise children under 16 on ATV models intended for their use.
Use by children of ATVs that are not recommended for their age can lead to severe
injury or death of the child.
Even though a child may be within the age group for which an ATV is recommended,
he or she may not have the skills, abilities, or judgement needed to operate the ATV
safely and may be involved in a serious accident.
Category Y (Youth Model) ATV. An ATV of appropriate size intended for recreational
use under adult supervision by an operator under age 16. Youth model ATVs can
further be categorized as follows:
Category Y-6+ ATV. A Category Y-6+ ATV is a youth model ATV that is intended for
use by children age 6 or older
Category Y-10+ ATV. A Category Y-10+ ATV is a youth model ATV that is intended for
use by children age 10 or older.
Category Y-12+ ATV. A Category Y-12+ ATV is a youth model ATV that is intended for
use by children age 12 or older.
Category T (Transitional Model) ATV. A Category T ATV is an ATV of appropriate
size that is intended for recreational use by an operator age 14 or older under adult
supervision, or by an operator age 16 or older.
!WARNING

III
Congratulations on your purchase of the BA50cc ATV.
It is warranted to be free of manufacturing defects in the material and
workmanship for a period of 90 days from the date of purchase. During the
warranty period BAJA INC. will at its option, repair, provide replacement
parts or replace your BAJA INC. 50cc ATV at no charge. This warranty
does not cover normal wear items or damage caused by neglect or misuse
of the product.
Engine Warranty – 90 days
Frame Warranty – 90 days
Warranty is void if:
Frame is bent or broken due to abuse
Wheels are bent or broken
Fender bent or broken due to abuse
Any sign of impact, accident, jumping, spin-outs or roll over.
BAJA, INC. is not liable for any damage claim or liability claim person or
otherwise resulting from the operation of this product in any way.
Should you experience a problem with your vehicle, please call Baja Inc.
customer service line toll free at 1-888-863-2252 between the hours of
7am and 5pm Monday through Friday MST (Mountain Standard Time).
MDT (Mountain Daylight Time) during the daylight saving time. You will be
instructed how to proceed.
A COPY OF THE SALES RECEIPT IS REQUIRED.

IV
This manual should be considered as a permanent
part of the vehicle and should remain with the vehicle
when resold or otherwise transferred to a new user
or operator. The manual contains important safety
information and instructions which should be read
carefully before operating the vehicle.
! WARNING
The engine exhaust from this product contains chemicals known
to the State of California to cause cancer, birth defects or other
reproductive harm.
CALIFORNIA PROPOSITION 65
! WARNING

1
TABLE OF CONTENTS
SAFETY................................................................................................................3
IMPORTANT ...............................................................................................3
NOTICE TO PARENTS ...............................................................................4
ATV BA50 ............................................................................................................8
FUEL AND OIL.....................................................................................................9
LOCATION OF LABELS......................................................................................10
CONTROL FUNCTIONS......................................................................................12
LEFT HANDLEBAR.....................................................................................12
RIGHT HANDLEBAR...................................................................................12
FUEL VALVE................................................................................................13
FUEL TANK CAP.........................................................................................13
SEAT LOCK.................................................................................................14
RIDING YOUR ATV..............................................................................................15
WHAT YOU SHOULD KNOW BEFORE RIDING ........................................15
INSPECTION BEFORE RIDING..................................................................16
BREAK-IN....................................................................................................17
STARTING THE ENGINE.............................................................................18
SAFETY GEAR............................................................................................20
STARTING OFF ...........................................................................................23
BRAKING.....................................................................................................24
TURNING .....................................................................................................25
OPERATION ON HILLS...............................................................................26
CLIMBING A HILL..........................................................................26
DESCENDING A HILL....................................................................27
RIDING OVER OBSTACLES.......................................................................29
SKIDDING OR SLIDING..............................................................................30
RIDING THROUGH WATER ........................................................................31
RIDING IN COLD WEATHER ......................................................................32
DRESSING FOR COLD WEATHER RIDING..................................33
RIDING YOUR ATV ON SNOW AND ICE.......................................34
ACCESSORY USE AND VEHICLE LOADING....................................................35
INSPECTION AND MAINTENANCE ...................................................................37
MAINTENANCE SCHEDULE ......................................................................38
TOOLS .........................................................................................................39
SPARK PLUG ..............................................................................................39
VALVE INSPECTION....................................................................................41
BATTERY INSTALLATION ..........................................................................42

2
TABLE OF CONTENTS
ADJUSTMENT OF THROTTLE LEVER......................................................46
IDLE SPEED ADJUSTMENT.......................................................................47
FUEL HOSE INSPECTION..........................................................................47
ENGINE OIL.................................................................................................48
CHECKING AND CHANGING ENGINE OIL...................................... 48
AIR FILTER..................................................................................................50
AIR FILTER REMOVAL.......................................................................51
CLEANING AIR FILTER ......................................................................51
DRIVE CHAIN/SPROCKETS.......................................................................52
DRIVE CHAIN CLEANING, OILING AND ADJUSTING.....................53
TIRES...........................................................................................................54
BRAKING.....................................................................................................57
FRONT BRAKE DRUMS .....................................................................58
REAR HYDRAULIC DISC BRAKE INSPECTION...............................58
GENERAL LUBRICATION...........................................................................59
TROUBLESHOOTING.........................................................................................60
FUEL SUPPLY CHECK................................................................................60
IGNITION SYSTEM CHECK........................................................................61
TRANSPORTING.................................................................................................62
CLEANING PROCEDURE...................................................................................63
PREPARATION FOR CLEANING................................................................63
WASHING YOUR ATV .................................................................................64
INSPECTION AFTER CLEANING...............................................................64
STORAGE PROCEDURE....................................................................................65
SERIAL NUMBER LOCATION ............................................................................66
SPECIFICATIONS................................................................................................67
WIRE DIAGRAM...................................................................................................68
EMISSION CONTROL SYSTEM WARRANTY.....................................................69

3
Please read this manual and follow all instructions carefully. To emphasize
the special information, the symbol and the words WARNING or CAUTION
have some special meanings. Pay great attention to the messages.
NOTE: Indicating special information which is to make maintenance easier or
instructions clearer.
WARNING and CAUTION are arranged like this:
This user’s manual contains important safety and maintenance information.
Read it carefully before riding. Failing to follow the warnings contained in this
manual could result in INJURY or DEATH.
It is important that this manual remain with the vehicle when you transfer it to
another user or owner.
All information, illustrations, photographs and specications contained in
this manual are based on the latest product information available at the time
of publication. Due to improvements or other changes, there will be some
discrepancies in this manual. We reserve the right to make product changes
at any time, without notice and without incurring any obligation to make the
same or similar changes to the vehicle previously built or sold.
WARNING
Indicates a potential hazard that could
result in death or injury.
CAUTION
Indicates a potential hazard that could result in vehicle
damage.
WARNING-or-CAUTION
The rst part will identify a POTENTIAL HAZARD.
The second part will describe WHAT COULD HAPPEN if you ignore
the WARNING or CAUTION.
The third part will describe HOW TO AVOID THE HAZARD.
SAFETY

4
SAFETY
We believe in conservation and protection of the earth’s natural resources. We
encourage every vehicle owner and operator to do the same by obeying posted
signs and riding only in areas designated and approved for off-road recreational
use.
NOTICE TO PARENTS
This ATV is built for use by children age 6 and older, but the users manual is
written for adults who will be supervising the children, we strongly recommend ,
therefore, that you review this entire manual with your child and carefully explain
the instructions, requirements, and warnings it contains so that your child can
understand them.
Children differ in skills, physical abilities, and judgement. Some children may not
be able to operate an ATV safely. Parents should supervise their child’s use of the
ATV at all times. Parents should permit continued use only if they determine that
the child has the ability to operate the ATV safely.
It is very important that every child who rides the ATV should complete a training
course.
THIS ATV IS NOT A TOY AND COULD BE HAZARDOUS TO OPERATE. An ATV
handles differently from other vehicles including motorcycles and cars. A collision
or rollover can occur quickly, even during routine maneuvers such as turning and
driving on hills or over obstacles, if you fail to take proper precautions.
SEVERE INJURY OR DEATH can result if you do not follow these instructions:
· Read this manual and all labels carefully and follow the operating procedures
described.
· Never operate an ATV without proper instruction. Take a training course.
Beginner should receive training from a certied instructor. Contact an
authorized ATV dealer or call SVIA at 1-800-887-2887 to nd out about the
training courses nearest you.
· Always follow these age recommendations:
Category Y (Youth Model) ATV. An ATV of appropriate size intended for recreational
use under adult supervision by an operator under age 16. Youth model ATVs can
further be categorized as follows:
Category Y-6+ ATV. A Category Y-6+ ATV is a youth model ATV that is intended for
use by children age 6 or older

5
SAFETY
· Never allow a child under age 16 to operate an ATV without adult supervision,
and never allow continued use of an ATV by a child if he or she does not have
the abilities to operate it safely.
Never carry a passenger on an ATV.
· Never operate an ATV on any paved surfaces, including sidewalks, driveways,
parking lots and streets.
· Never operate an ATV on any public street, road or highway, even a dirt or
gravel one.
· Never operate an ATV without wearing an approved motorcycle helmet that
ts properly. You should also wear eye protection (goggles or face shield),
gloves, boots, long-sleeved shirt or jacket, and long pants.
· Never consume alcohol or drugs before or while operating this ATV.
· Never operate this ATV at excessive speeds. Always go at a speed that is
proper for the terrain, visibility and operating conditions, and your experience.
· Never attempt wheelies, jumps, or other stunts.
· Always inspect your ATV each time you use it to make sure it is in safe
operating condition. Always follow the inspection and maintenance
procedures and schedules described in this manual.
· Always keep both hands on the handlebars and both feet on the footrests of
the ATV during operation.
· Always go slowly and be extra careful when operating on unfamiliar terrain.
Always be alert to changing terrain conditions when operating the ATV.
· Never operate on excessively rough, slippery or loose terrain until you have
learned and practiced the skills necessary to control the ATV on such terrain.
Always be especially cautious on these kinds of terrain.
· Always follow proper procedures for turning as described in this manual.
Practice turning at low speeds before attempting to turn at faster speeds. Do
not turn at excessive speeds.
· Never operate that ATV on hills too steep for the ATV or for your abilities.
Practice on smaller hills before attempting larger hills.
Category Y-10+ ATV. A Category Y-10+ ATV is a youth model ATV that is intended
for use by children age 10 or older.
Category Y-12+ ATV. A Category Y-12+ ATV is a youth model ATV that is intended
for use by children age 12 or older.
Category T (Transitional Model) ATV. A Category T ATV is an ATV of appropriate
size that is intended for recreational use by an operator age 14 or older under adult
supervision, or by an operator age 16 or older.

6
SAFETY
· Always follow proper procedures for climbing hills as described in this
manual. Check the terrain carefully before you start up any hill. Never climb
hills with excessively slipper or loose surfaces. Shift you weight forward.
Never open the throttle suddenly or make sudden gear changes. Never go
over the top of any hill at high speed.
· Always follow proper procedures for going down hills and for braking on hills
as described in this manual. Check the terrain carefully before you start down
any hill. Shift your weight backward. Never go down a hill at high speed. Avoid
going down a hill at an angle that would cause the vehicle to lean sharply to
one side. Go straight down the hill where possible.
· Always follow proper procedures for crossing the side of a hill as described
in this manual. Avoid hills with excessively slippery or loose surfaces. Shift
your weight to the uphill side of the ATV. Never attempt to turn the ATV around
on any hill until you have mastered the turning technique described in this
manual on level ground. Avoid crossing the side of a steep hill if possible.
· Always use proper procedures if you stall or roll backwards when climbing
a hill. To avoid stalling, use proper gear and maintain a steady speed when
climbing a hill. If you stall or roll backwards, follow the special procedure for
braking described in this manual. Dismount on the uphill side or to a side
if pointed straight uphill. Turn the ATV around and remount, following the
procedure described in this manual.
· Always check for obstacles before operating in a new area. Never attempt
to operate over large obstacles, such as large rocks or fallen trees. Always
follow proper procedures when operating over obstacles as described in this
manual.
· Always be careful when skidding or sliding. Learn to safely control skidding
or sliding by practicing at low speeds and on level, smooth terrain. On
extremely slippery surfaces, such as ice, go slowly and be very cautious in
order to reduce the chance of skidding or sliding out of control.
· Never operate an ATV in fast owing water or in water deeper than that
specied in this manual. Remember that wet brakes may have reduced
stopping ability. Test your brakes after leaving water. If necessary, apply
them several times to let friction dry out the linings.
· Always use the size and type tires specied in this manual. Always maintain
proper tire pressure as described in this manual.

7
SAFETY
· Never modify an ATV through improper installation or use of accessories.
· Never exceed the stated load capacity for an ATV. Cargo should be properly
distributed and securely attached. Reduce speed and follow instructions in
this manual for carrying cargo. Allow greater distance for braking.
· The combined weight of the rider and any accessories or cargo must never
exceed the vehicle’s load capacity of 100 lbs (45 kg).
· Do not tow a trailer. This vehicle is not designed for such use.
FOR MORE INFORMATION ABOUT ATV SAFETY, call the Consumer Product Safety
Commission at 1-800-638-2772, SVIA 1-800-887-2877, or Baja Safety Hotline at
1-866-260-8630

8
[Right]
[Left]
Front Tire
Rear Tire
Fuel valve
Seat
Gas cap
Choke
Mufer
Front Shocks
Rear Shock
Safety
Engine kill
tether
Oil Cap
Drive chain
ATV- BA50U
Thumb Throttle

9
FUEL
The proper fuel is very important for the engine. Ensure that there is no dust
or dirt, or water which has mixed in the fuel. Please use the regular unleaded
gasoline with the octane number 89 or higher.
ENGINE OIL
Your 50cc ATV has a four-stroke engine. Please use oil as described in the
chart below. By using the prescribe oil, you will realize the best lubrication for
the engine.
Use the chart to select a viscosity rating based on the temperature range in your area.
NOTE: In very cold weather (below 5°F (-15°C), use SAE10W-50 for good
starting and smooth operation.
ENGINE
TEMP.
SAE 10W-30
SAE 20W-40
SAE 10W-50
°C
°F
-30
-22
40
104
-20
-4
-10
14
0
32
10
50
20
68
30
86
FUEL AND OIL

10
Read and follow all of the warning labels on your ATV. Make sure you
understand all the labels. Keep the labels on the ATV. Do not remove them
for any reason. If a label comes off or becomes difcult to read, you should
get a replacement by contacting BAJA INC..
LOCATION OF LABELS
2 -
1 -
12
3
WARNING
UNDER
6
Operation of this ATV by children under
the age of 6 increases the risk of severe
injury or death.
Adult supervision is required for children
under age 16.
NEVER
permit children under age 6
to operate this ATV.
BEER
BEER
ALWAYS USE AN
APPROVED
HELMET AND
PROTECTIVE
GEAR
NEVER USE
ON PUBLIC
ROADS
NEVER CARRY
PASSENGERS NEVER USE
WITH DRUGS OR
ALCOHOL
NEVER operate:
● without proper training or instruction
● at speeds too fast for your skills or the conditions
● on public roads - a collision can occur with
another vehicle
● with a passenger - passengers affect balance and
steering and increase risk of losing control
ALWAYS:
● use proper riding techniques to avoid vehicle
overturns on hills and rough terrain and in turns
● avoid paved surfaces - pavement may seriously
affect handling and control
LOCATE AND READ OWNER’S MANUAL.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
Improper ATV use can result in SEVERE INJURY OR DEATH
WARNING
!

11
LOCATION OF LABELS
4
4 -
3-
Improper tire pressure or overloading can
cause loss of control.
Loss of control can result in SEVERE INJURY
or DEATH.
WARNING
Cold tire pressure:
Front: 4 ± 0.5 Psi (27.6 ± 3.5 Kpa)
Rear : 4 ± 0.5 Psi (27.6 ± 3.5 Kpa)
Maximum weight capacity; 100 lbs. (45 kg)
NEVER ride as a
passenger.
Passengers can cause
loss of control, resulting
in SEVERE INJURY or
DEATH.
WARNING

12
CONTROL FUNCTIONS
RIGHT HANDLEBAR
Throttle Lever
Control the engine and ATV speed with the throttle lever. Operate this lever
with your thumb. Push it forward to increase engine and ATV speed. Release
it to decrease engine and ATV speed.
Front brake lever
Control the engine and ATV braking with
the front brake lever. Squeeze lever toward
grip smoothly to apply front brakes.
Release when accelerating.
HANDLEBAR & SWITCH
Throttle lever
Front brake lever
LEFT HANDLEBAR
When ATV is mot in use, the rear brake lever should be pulled back and the
parking brake pin set in place. In this position the ATV should not move.
Rear Brake Lever - Apply the rear brake by squeezing the rear brake lever
towards the grip.
RUN/OFF Switch - With the switch in “RUN” position the engine can start.
Move switch to “OFF” position to stop engine.
Electric Start Button - RUN/OFF switch needs to be in “RUN” position before
engine will start. Push electric start button to start engine.
Parking Brake Pin - Pull in lever and push pin down in order to set the parking
brake.
Manual Choke Lever - When engine is cold, place the choke lever to the “ON”
position. When engine has warmed up, place choke lever back to the “OFF”
position.
Engine Stop switch
Electric Start
Button
Rear Brake lever
Parking
Brake Pin
Manual choke lever
Off
On

13
CONTROL FUNCTIONS
FUEL VALVE
This vehicle has a manually operated fuel valve. There are two positions:
“ON” and “OFF”. See the pictures below for the correct operation of fuel
valve.
FUEL TANK CAP
To open the fuel tank cap, turn the fuel tank cap counterclockwise. To close
the fuel tank cap, turn it clockwise and tighten it securely.
Fuel level Filler neck
“ON” position fuel will ow to
the carburetor when the engine is
running or being started.
Gas Cap
“OFF” position
No fuel will ow into the carburetor.
ON
OFF

14
CONTROL FUNCTIONS
WARNING
Overlling the fuel tank could be hazardous.
If you overll the fuel tank, fuel may overow when it expands. Expanding
is due to heat from engine or sun. Overheated fuel could easily catch re.
Stop adding fuel when the fuel level reaches the bottom of the ller neck.
WARNING
Improper fueling of the ATV could be hazardous.
Failing to follow safety precautions when refueling could result in a re or
let you to breathe toxic fumes.
Refuel in a well ventilated area. Make sure the engine is off and avoid
spilling fuel on a hot engine. Do not smoke, and make sure there are no
open ames or sparks in the area. Avoid breathing gasoline vapors. Keep
children and pets away when you are refueling the ATV.
WARNING
Improperly installing the seat could be hazardous.
Failing to install the seat properly could allow the seat to move and
cause the rider to lose control.
Make sure you are in proper position and the seat is attached securely
when you install it.
Seat lock lever located
under seat and rear
fender
SEAT LOCK
To remove the seat, move the seat lock lever
backward. Raise the rear end of the seat and
slide it back.
To lock the seat, slide the seat lever
into its retainer and push down rmly.

15
RIDING YOUR ATV
RIDING YOUR ATV
WHAT YOU SHOULD KNOW BEFORE RIDING
Before riding, you should read all the following information carefully. If you
are properly prepared, you will have a more enjoyable ride.
Before riding, you should nd a good place to practice the skills. Find a at,
open area with enough space to practice the new skills.
Make sure that it is legal to ride in the area you selected. Review the local laws and
make sure you are not trespassing. Call the police if you don’t know where you
can ride.
Protect your riding areas. When you are riding, remember to keep the terrain
in good condition. Don’t destroy plants, trees or other vegetation. Don’t litter
and don’t bother wildlife. With your help, your riding area can remain open for
use in the future.
After you have found a good place to practice, review the control system on
your ATV before riding. Learn to nd these controls without looking for them,
because you will not have time to look for them when you are riding.
Canadian residents must obtain, review, and follow all provincial and municipal
government acts and regulations pertaining to owning and operating an off-road
vehicle.
WARNING
Operating this ATV without proper instruction.
The risk of an accident is greatly increased if the operator does not know
how to operate the ATV properly in different situations and on different
types of terrain.
Beginning and inexperienced operators should complete the certied
training course offered by SVIA (www.svia.org). They should then
regularly practice the skills learned in the course and the operating
techniques described in the owner’s manual.
For more information about the training course, contact an authorized
ATV dealer or call SVIA at 1-800-887-2887. For More information on ATV
Safety Contact the Baja ATV Safety Hotline at: 866-260-8630

16
INSPECTION BEFORE RIDING
WARNING
Failing to inspect the ATV before operating could be hazardous. Failing
to perform proper maintenance could also be hazardous.
Failing to inspect and maintain your ATV could increases the chances
of an accident or equipment damage
Always inspect yourATV each time before riding, and make sure it is in a safe
operating condition. Refer to the INSPECTIONAND MAINTENANCE section in
this manual.
ITEM TO CHECK CONTENT
Steering Smoothness; No restriction of movement; No play or looseness
Brakes Proper brake lever free play; enough brake force; Parking brake
effectiveness
Tires Proper air pressure; Enough tread depth; No cracks, rips, or other
damages
Fuel Enough fuel for the intended trip; Fuel hose connected securely; No
damage to fuel tank or cap; Fuel tank cap closed securely
Engine stop switch Proper operation
Engine oil Proper level – Check the oil by inspecting the Engine Oil indicator
located at the bottom of the engine. The engine oil should
completely ll the view window as indicated in the picture. Add oil if
the window is not completely lled.
Throttle Proper free play of throttle lever; Smooth response; Quick return to
idle position
Drive chain Proper tension; adequate lubrication; No excessive wear or damage
General condition Bolts and nuts are tight; No rattle from any parts of the engine when
running; No visible evidence of Damage
RIDING YOUR ATV