Baja motorsports WD400U Manual

1. Remove cardboard carton
from metal frame.
WD400U Set up instructions
2. Remove metal brackets from
front, rear and handlebars.
Removal from crate

2
3. Remove metal frame and hardware box.
Hardware box
4. Remove metal brackets holding
rear axle to metal frame.
5. Remove Rear shock pin to release bottom
of shock from metal shipping crate.
Removal from crate

3
Front bumper
Rear view mirrors
Wheel covers Handlebar cover
Handlebar bolts
Tire pressure gauge
Tire pressure
gauge adaptor
Allen wrench Open end wrench Pliers
Spark plug remover
Axle wrench
Hardware box contents
Grease ttings

4
6. Attach front shocks to left and
right a-arms using bolts provided.
8. Attach rear shock to axle with
rear shock pin and cotter pin.
Front and Rear shock attachment
7. In rear fork there are 2 grease holes;
one on the right and the other on the
left. Install the grease ttings into these
holes using an open end wrench.
Hole in rear fork
Grease tting

5
9. Remove metal plate, unscrew bolts. 10. Secure the handlebars using
the handlebar bolts provided
11. Place the ignition switch
into slot on handlebar cover.
12. Attach handlebar cover
by snapping into place.
Approximate
handlebar
position
Handlebar and handlebar cover attachment

6
Rear view mirror attachment
13. Attach left and right
rear view mirrors.
Wheel cover attachment
14. Attach wheel covers
to all four wheels
15. Fill all tires to recommended pressure
of 25PSI using air pressure adapter, check
PSI using tire pressure gauge.

7
Battery Installation
Battery located
under seat.
Front Bumper Installation
16. Install front bumper with bolts
located in bumper assembly.

8
Battery Installation
BATTERY INSTALLATION
INITIAL SERVICE AND INSTALLATION OF BATTERY:
WARNING
The following procedure is very dangerous and should be performed
with utmost care and attention. Wear protective eye wear, rubber gloves,
and have water available should electrolyte come in contact with your
skin or eyes. KEEP ALL CHILDREN AWAY FROM THE AREA WHILE THIS
PROCEDURE IS BEING PERFORMED.
POISON – CAUSES SEVERE BURNS
Contains sulfuric acid.
Avoid contact with skin, eyes, or clothing
To prevent accidents, rinse empty container with water.
ANTIDOTE:
External – ush with water
Internal – Call physician immediately. Drink large quantities of water or
milk.
Follow with milk of magnesia, beaten eggs or vegetable.
Eyes – Flush with water for 15 minutes and get prompt medical attention.
KEEP OUT OF REACH OF CHILDREN.

9
Battery Installation
Note: The following page is for vehicles with battery’s containing separate electrolyte pack. Most
batteries will come with the electrolyte already sealed into the battery.
Preparing the battery:
· Place battery on level surface. Remove sealing tape from top.
(see gure 20)
· Take the electrolyte container out of the plastic bag.
· Place electrolyte container upside down with the sealed silver
mouths of the electrolyte bottles in line with the six ller
holes of the battery. (see gure 21)
· Push the container down strongly enough to break the silver
seals.
· As electrolyte starts owing into battery, air bubbles will
come up from the mouths of the plastic electrolyte bottles.
· Leave bottles upside down in battery holes until electrolyte is
completely drained.
· Never leave children unattended around battery.
· If air bubbles cease to oat to the top of the electrolyte
bottles, tap lightly on top.
· DO NOT remove container from battery while it is draining.
· Never cut or pierce electrolyte container.
· After all the electrolyte has drained from the bottles into
the battery, pull plastic electrolyte bottles gently out of the
battery.
· Discard empty electrolyte bottles in a waste area that is
inaccessible to children and animals.
· After lling, let battery stand for at least 30 minutes before
charging. This allows the electrolyte to penetrate plates for
optimum performance and ensures longer battery life.
· After 30 minutes the battery is ready for its initial charge.
Place cap strip loosely over the lling holes as shown in the
picture. (see gure 23)
Figure 20
Figure 21
Figure 23

10
Figure 24
Figure 25
Figure 26
Figure 28
Figure 27
Red +
Black -
Battery bracket
How to Initially Charge the battery:
1. Connect the red positive (+) cable to the red positive (+)
pole of the battery.
(see gure 24)
2. Connect the black negative (-) cable to the black negative
(-) pole of the battery. (see gure 25)
Note: The red positive (+) cable has a larger diameter
than the black negative y cable.
3. Charging rate: Charge battery @ 0.7 Amps for
5 ~ 10 hours.
• After charging is complete, press down rmly with
both hands to seat the caps, (Do not pound or
hammer). The battery is now sealed. (see gure 26 )
• Install battery into battery compartment. The battery
terminals should be facing the front (see gure 27)
• Once battery is rmly seated in battery compartment
attach the red positive wire to the red positive terminal
on the battery. (see gure 28)
• Then attach the black negative wire to the black
negative terminal on the battery.
(see gure 28)
• Install the battery bracket (see gure 28)
Battery Installation
WARNING
NEVER REMOVE THE STRIP OF CAPS
NOR ADD ANY WATER OR ELECTROLYTE.

11
17. Fill engine with correct amount of oil. Refer
to owners manual for oil types and quantity.
18. Fill gas tank as specied
in owners manual.
19. Refer to owners manual for
proper starting instructions.
!!WARNING!!
This engine may be shipped with packing
oil. This oil should be drained and replaced
with new engine oil as described in the
owners manual. Never attempt to start the
engine without rst replacing engine oil
with proper amount and grade as
described in the owners manual.
Gas and Oil