Baja motorsports WD250UR User manual

Always wear a helmet; It could save your Life!
Do not remove this operator’s manual from this vehicle.
Please obtain, review, and follow provincial / municipal government acts and
regulations pertaining to owning and operating an off-road vehicle.
Minimum Age Requirement 16
Read this manual carefully. It contains important safety information.
No one under the age of 16 should operate this ATV
OWNER’S MANUAL
WD250UR / WD250U ATV
REV. B
022108
WD250U
CAMO
WD250UR
RED

II
Congratulations on your purchase of the
Baja Motorsports WD250UR / WD250U ATV.
Congratulations on your purchase of the WD250UR / WD250U ATV.
The period of warranty for the vehicle shall be 90 days from the
date of purchase and the warranty covers the manufacturer’s faulty
workmanship and materials. During the warranty period BAJA, INC.
will at its option, repair, provide replacement parts or replace your
Baja Motorsports 250cc 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 MOTORSPORTS INC. is not liable for any damage claim or
liability claim personal or otherwise resulting from the operation of
this product in any way.
Should you experience a problem or need to return your Baja Motorsports
250cc ATV for repair, please call the BAJA MOTORSPORTS customer service
department TOLL FREE at 1-866-250-7155 between the house of 7am and 5pm
Monday thru Friday PST. You will be instructed how to proceed.
A COPY OF THE SALES RECEIPT IS REQUIRED.

III
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
IMPORTANT ...................................................................................................................... 2
FOREWORD ...................................................................................................................... 3
NOTICE TO THE USER..................................................................................................... 3
BAJA WD250UR / WD250U ATV ...................................................................................... 7
FUEL AND OIL................................................................................................................... 8
LOCATION OF LABELS.................................................................................................... 9
INDICATOR LIGHTS AND MAIN KEY SWITCH ASSEM.(W/ Speedometer).................. 11
HANDLEBAR & SWITCH.................................................................................................. 12
LEFT HANDLEBAR.................................................................................................. 12
RIGHT HANDLEBAR................................................................................................ 13
REAR FOOT BRAKE................................................................................................ 13
FUEL VALVE............................................................................................................. 14
FUEL TANK CAP ...................................................................................................... 14
SEAT LOCK .............................................................................................................. 15
12V UTILITY SOCKET.............................................................................................. 16
RIDING YOUR ATV............................................................................................................ 17
BEFORE RIDING ...................................................................................................... 17
INSPECTION BEFORE RIDING ............................................................................... 18
SAFETY GEAR ......................................................................................................... 20
BREAK-IN ................................................................................................................. 21
STARTING THE ENGINE.......................................................................................... 22
STARTING OFF ........................................................................................................ 26
SHIFTING.................................................................................................................. 27
BRAKING.................................................................................................................. 29
TURNING .................................................................................................................. 30
SKIDDING OR SLIDING ........................................................................................... 31
OPERATION ON HILLS............................................................................................ 31
RIDING OVER OBSTACLES.................................................................................... 35
RIDING THROUGH WATER ..................................................................................... 36
RIDING IN COLD WEATHER.................................................................................... 37
RIDING ON SNOW OR ICE ...................................................................................... 39
ACCESSORY USE AND VEHICLE LOADING.................................................................. 40
Table of Contents

2
VEHICLE WEIGHT LIMITS................................................................................................ 41
INSPECTION AND MAINTENANCE ................................................................................. 42
TOOLS ...................................................................................................................... 44
SPARK PLUG ........................................................................................................... 44
BATTERY INSTALLATION ....................................................................................... 46
FUSE REPLACEMENT............................................................................................. 50
HEADLIGHT/TAILLIGHT REPLACEMENT.............................................................. 50
THROTTLE LEVER ADJUSTMENT ......................................................................... 51
IDLE SPEED ADJUSTMENT.................................................................................... 52
FUEL HOSE .............................................................................................................. 52
ENGINE OIL/OIL STRAINER/OIL FILTER ............................................................... 53
AIR FILTER ............................................................................................................... 55
CLUTCH ADJUSTMENT........................................................................................... 57
REAR GEAR CASE LUBRICATION......................................................................... 58
TIRES ........................................................................................................................ 59
BRAKES.................................................................................................................... 61
HYDRAULIC FRONT BRAKES ............................................................................... 61
REAR DRUM BRAKE .............................................................................................. 62
MUFFLER/ SPARK ARRESTER............................................................................... 64
GENERAL LUBRICATION........................................................................................ 66
TROUBLESHOOTING....................................................................................................... 67
TRANSPORTING............................................................................................................... 69
CLEANING PROCEDURE................................................................................................. 70
STORAGE PROCEDURE.................................................................................................. 72
SERIAL NUMBER LOCATION .......................................................................................... 73
SPECIFICATIONS.............................................................................................................. 74
EMISSION CONTROL CYCTEM WARRANTY ................................................................. 76
Table of Contents

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: Indicates 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 vehicles previously built or sold.
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.
CAUTION
Indicates a potential hazard that could result in vehicle damage.
WARNING
Indicates a potential hazard that could result in death or injury.

4
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 USERS
THIS ATV IS NOT A TOY. IT COULD BE HAZARDOUS TO THE OPERATOR.
An ATV is different from other vehicles including motorcycles and cars. A
collision or rollover could occur quickly, even during routine maneuvers such
as turning and driving on hills or over obstacles if you fail to take proper
precautions.
· Read this manual and labels on the ATV carefully and follow the
operations procedures as described.
· Never operate the ATV without proper instruction. Take a training course.
Beginners should be trained by a licensed instructor. Always follow the
age recommendations
· Never carry a passenger on an ATV.
· Always avoid operating an ATV on paved surfaces, including: sidewalks,
paths, parking lots, driveways, streets, roads, and highways. Never
operate this or any ATV on a public street, road or highway where motor
vehicles are in operation.
· Never operate an ATV without wearing a DOT approved motorcycle
helmet which ts properly. Operators should also wear eye protection
(goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and
long pants.
WARNING
SEVER INJURY OR DEATH can result if you do not follow
these instructions.

5
· Never operate this ATV at excessive speeds. Always operate at a speed
that is proper for the terrain, visibility, operating conditions, and the
operator’s skill / experience.
· Never attempt wheelies, jumps, or other stunts.
· Always inspect the ATV each time before use to ensure it is in a safe
operating condition. Always follow the inspection and maintenance
procedures and schedule described in this manual.
· Always keep both hands on the handlebar and both feet on the footrests
of the ATV during operation.
· Always go slowly and be extremely careful when operating on unfamiliar
terrain. Always be alert to the changing terrain conditions when
operating the ATV.
· Never operate on excessively rough, slippery or loose terrain until you
have learned and practiced the necessary skills to control the ATV on
such 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 the ATV on hills that are too steep for the ATV or for the
operator’s ability. Practice on smaller hills before attempting larger hills.
· Always follow the 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 slippery or loose surfaces. Shift your
weight forward. Never open the throttle suddenly. Never go over the top
of a hill at high speeds.
· Always follow proper procedures for going down hills as described in
this manual. Check the terrain carefully before starting to go down any
hill. Shift your weight backward. Never go down a hill at an angle that
would cause the vehicle to lean sharply to one side. Go straight down
the hill if possible.
· Always follow proper procedures for crossing the side of a hill as
described in this manual. Avoid operation on 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.

6
· Always use proper procedures if you stall or roll backwards when
climbing a hill. To avoid stalling, 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 to 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 avoid going out of control when skidding or
sliding.
· Never operate an ATV in fast owing water or in water deeper than that
specied in this manual. Remember that wet brakes can reduce stopping
ability. Test your brakes after leaving water. If necessary, apply them for
several times to let friction linings dry out.
· Always use the tires with proper size and type tires specied in this
manual. Always maintain proper tire pressure as described in this
manual.
· Never modify an ATV through improper installation of accessories.
· Never exceed the stated load capacity for an ATV. Cargo should be
distributed properly and attached securely. Reduce speed and follow
instructions in this manual for carrying cargo. Allow longer distance for
breaking.
· Never ride drive the vehicle at night with night dened as the period of
time 30 minutes before sunset to 30 minutes after sunrise.
· The combined weight of the rider and any accessories or cargo plus
the vertical weight on trailer hitch must never exceed the vehicle’s load
capacity of 165 Kg (364 lbs.)

7
WD250UR / WD250U
RIGHT
LEFT
Rear wheel
Manual pull start
Drive select lever
Taillight
Gear shift lever
Front wheel
Front rack Rear rack
Mirrors
Seat
Gas cap
Control panel
Front shocks
Foot brake
Oill ll cap/dipstick
Rear shock

8
FUEL AND OIL
FUEL
Proper fuel is very important for the engine. Ensure there is no dust, dirt, or
water which has mixed in the fuel. Use regular unleaded gasoline.
ENGINE OIL
Your 250cc ATV has a four-stroke engine. Please use oil as described in the
chart below. By using the prescribed 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.
SAE 10W-30
SAE 10W-40 10W-50
ENGINE
TEMP. °C
°F
-30
-22
40
104
-20
-4
-10
14
0
32
10
50
20
68
30
86

9
LOCATION OF WARNING LABELS
Read and follow all of the warnings 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 Motorsports.
2-
WARNING
UNDER
16
Operation of the ATV by children under
the age of 16 increases the risk of severe
injury or death.
NEVER permit children under age 16
to operate this ATV.
WARNING
NEVER ride as a passenger.
Passenger can cause a loss
of control, resulting in
SEVERE INJURY or DEATH.
Improper ATV use can result in SEVERE INJURY or DEATH
ALWAYS USE AN
APPROVED HELMET
AND PROTECTIVE
GEAR
NEVER OPERATE
:
another vehicle.
ALWAYS
:
NEVER USE
ON PUBLIC
ROADS
NEVER CARRY
PASSENGERS NEVER USE
WITH DRUGS
OR ALCOHOL
Without proper training or instruction.
At speeds too fast for your skills or the condition.
On public roads, a collision can occur with
With passenger-passengers affect balance and
steering and increase risk of losing control.
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 CAREFULLY BEFORE OPERATING.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
WARNING
Read owner’s manual
carefully before operating.
ATV MUST be stopped and
be in first gear before shifting
the drive select lever into or
from reverse.
GEAR SHIFT Pattern
DRIVE SELECT LEVER
5
4
3
2
1
N
1-
3-
4-
1
4
6
7
9
3
2
10
8
5

10
LOADING
dislodge from the rim.
Maximum vehicle capacity is: 165Kg (364 lbs.)
Maximum capacity includes the weight of the
operator, cargo, and accessories plus the veritcal
weight on trailer hitch.
WARNING
IMPROPER TIRE PRESSURE OR
OVERLOADING CAN CAUSE LOSS
OF CONTROL.
LOSS OF CONTROL CAN RESULT
IN SEVERE INJURY OR DEATH.
COLD TIRE PRESSURE:
Recommended: Minimum Front: 17kpa (2.5psi)
Maximum Front: 23kpa (3.3psi)
Never set tire pressure below the
recommended level. It could cause the tire to
Minimum Rear: 22kpa (3.2psi)
Maximum Rear: 28kpa (4psi)
WARNING
LOAD LIMIT
30kg (66lbs) NEVER sit here
WARNING
LOAD LIMIT
45kg (99lbs) NEVER sit here
SHIFTING INTO OR FROM REVERSE
CAN ONLY BE DONE IN FIRST GEAR.
YOU MUST COME TO A COMPLETE STOP
BEFORE SHIFTING INTO OR
FROM REVERSE.
WARNING
CAUTION
·Accessories connected to utility
socket should not exceed 100 watts.
·Make sure accessories are firmly plugged
in utility socket before use.
·Using utility socket more than 10
minutes, without engine running, will
drain battery.
WARNING
!
THIS VEHICLE IS AN ALL-TERRAIN
VEHICLE AND IS NOT INTENDED FOR
USE ON PUBLIC HIGHWAYS
5-
6-
7-
8-
9-
10-

11
1. Speedometer
Indicates speed of ATV
2. Odometer
Indicates total mileage driven.
3. Reverse indicator
Illuminates when ATV is in reverse.
4. Km/h indicator
Illuminates when speedometer is in Km/h
5. High beam indicator
Illuminates when high beam is on.
6. Lights indicator
Illuminates when headlights or
taillights are on.
7. M/h (mph) indicator
Illuminates when speedometer is in M/h.
8. Neutral indicator
Illuminates when ATV is in Neutral.
9. Km/h - M/h (mph) toggle button
Depressing Button toggles between Km/h and M/h
10. Ignition key switch
Turn right (CW) “ON”, Turn left (CCW) “OFF”. ATV will only start when
ignition key is turned to the “ON” Position Make sure ignition key switch is
in the “OFF” position when not in use.
SPEEDOMETER, INDICATOR LIGHTS AND MAIN KEY SWITCH
3
1
2
4
6
7
8
10
5
9

12
1 - Engine Stop Switch
With the Engine stop switch in the “OFF” position the engine cannot be
started. With the Engine stop in the “RUN” position the engine can be started.
2 - Rear brake lever
Rear brake is applied by squeezing the rear brake lever towards the grip.
3 - Electric start button
Depressing the electric start button will start the engine while the Ignition Key
Switch is in the “ON” and Engine Stop Switch is in the “RUN” position.
4 - Light switch. There are 3 positions on the light switch: “OFF”, “Daytime running
lights” and “Headlights”.
5 - High beam / low beam switch.
6 - Parking Brake Lock. While starting the engine or parking the machine, especially
on a slope, apply the parking brake by squeezing the rear brake lever and
pushing down the Parking Brake Lock.
7 - Manual Choke Lever. When engine is cold, place the choke lever to the ON
position. When engine has warmed up, place lever back to the OFF position.
LEFT HANDLEBAR SWITCHES: REAR BRAKE LEVER
AND PARKING BRAKE LOCK
6
2
1
3
4
7
Choke lever
ON OFF
5

13
RIGHT HANDLEBAR: FRONT BRAKE LEVER AND
THUMB THROTTLE
Rear foot brake
REAR FOOT BRAKE
Foot brake
Located on the right hand side of the ATV.
Foot brake stops the rear wheels.
2
1
4
3
5
1 - Throttle lever
Controls engine and ATV speed. Operate this lever with your thumb.
Push it forward to increase engine and ATV speed. Release it to
decrease engine and ATV speed.
2- Front brake lever
Squeeze lever toward hand grip to apply front brakes.
3- Speed limiter screw
The speed limiter keeps the throttle from fully opening, even when the
throttle is pushed to the maximum. Turning the speed limiter screw
clockwise limits the maximum engine power available and decreases the
maximum speed. Adjust this limiter screw according to the rider’s skill
and experience.
4 - Brake uid reservoir
Use DOT3 or DOT4 brake uid. Do not mix brake uid types.
5 - Front brake adjustment screw

14
Fuel level Filler neck
FUEL VALVE
This vehicle has one manually operated fuel valve. There are 3 positions
“ON” “OFF” “RESERVE”
“ON” position
In this position, fuel is allowed to ow into the carburetor when the
engine is running or being started.
“OFF” position
In this position the fuel is shut off from the carburetor. The fuel valve
needs to be placed in this position when the ATV is not in use
“RESERVE” position
If the fuel level in the fuel tank becomes to low for the engine to stay
running while the fuel valve is in the “ON” position, turn the fuel valve
to “RESERVE”. This will allow the engine to begin using the reserve
fuel supply. You will need to re-fuel as soon as possible. Once
re-fueled, turn the valve back to the “ON “ Position .
FUEL TANK CAP
To open the fuel tank cap, take the end of the vent tube out from the vehicle
body; turn the fuel tank cap counterclockwise. To close the fuel tank cap,
turn it clockwise and tighten it securely. Be sure that the vent tube is
securely connected to the cap as shown.

15
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 the seat down rmly.
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 seat is in proper position and attached securely when you
install it.

16
12V Utility Socket
CAUTION
Using Accessories with wattage requirements over 100 watts could damage
ATV
Using Accessories with wattage requirements over 100 watts could cause
wiring and electrical components to overheat causing failure.
Check accessory wattage requirements before plugging in to 12V electrical
socket.
12V Utility socket Use:
1. Remove 12V utility socket accessory cap.
2. Plug in accessory making sure plug is pushed all the way in
socket.
Note: Do not use accessory more than 10 minutes without engine
running, doing so will drain battery.
3. After use, make sure cap is placed back on socket.

17
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, municipal and
governmental acts and regulations pertaining to owning and operating an off-road
vehicle.
WARNING
Operating this ATV without proper instruction could be hazardous.
The risk of riding could increase greatly if you do not know how to operate
the ATV properly under different situations and in different types of terrain.
Beginners and inexperienced operators should complete a certied training
course. You should regularly practice the skills learned in the course and the
operating techniques described in this user’s manual. For more information
about the training course, visit www.svia.org or call 800-887-2887.
For more information on ATV safety and other provincial, municipal and
governmental acts and regulation pertaining to owning and operating an off-
road vehicle visit one of the following web-sites:
www.svia.org
www.cpsc.gov
www.mmic.ca/CATV/