Honda TRX400EX FOURTRAX 1999 Service Manual page 172

FRONT WHEEL/SUSPENSION/STEERlNG
Place the proper size adaptor onto the threaded shaft
and then put the wheel over the threaded shaft and
adaptor.
Lube the bead area with water, pressing down on the
tire sidewalllbead area in several places to allow the
water to run into and around the bead. Also lube area
where the breaker arm will contact the sidewall
tire.
Use only water as a lubricant removing
tires. Soap or some mounting lubricants may leave a
slippery residue which can cause the tire to shift on
the rim and lose air pressure during riding.
While holding the breaker arm assembly a t an
approximate 45" position, insert the blade of the
breaker arm between the tire and rim. Push the
breaker arm inward and downward until it is in the
horizontal position with its press block in contact
with the rim.
Only one white nylon button is used for the wheels
on the TRX400EX. The button must be ground across
the rounded surface to within 1.5 mm of the center
hole. Install the button on the right side of the press
head (as viewed when installed on tire).
With the breaker arm in the horizontal position, place
the breaker press head assembly over the breaker arm
press block. Make sure the press head bolt is backed
out all the way and then position the nylon button on
the press head against the inside edge of the rim.
Insert the threaded shaft through the appropriate
hole in the breaker press head assembly. When
installing the press head block onto the breaker arm,
you may have to rotate the press head assembly to
draw the blade fully under the wheel rim. Then,
straighten the press headlbreaker arm assembly and
tighten the lever nut until both ends of the breaker
press head assembly are in firm contact with the rim.
Tighten the press head bolt until the reference mark
on the press block is aligned with the top edge of the
press head. Do not tighten past this reference mark.
If
the rest of the bead cannot be pushed down into
the center of the rim by hand, loosen the press head
bolt and the lever nut.
Rotate the breaker arm assembly and breaker press
head assembly 118 t o 114 the circumference of the
rim.
Tighten the lever nut and then tighten the press head
bolt as described.
Repeat this procedure as necessary until the remain-
der the bead can be pushed down into the center
of
of the rim.
Assemble the Universal Bead Breaker on the other
side of the wheel and break the bead following the
same procedures.
Remove the tire from the rim using a tire changer
machine of tire irons and rim protectors.
Remove tire from rim that has the smallest shoulder
area to simplify removal.
12-1 0
of
the
mounting
or
ADAPTER
WHITE
NYLON BUTTON:
BREAKER ARM ASSEMBLY
\
THREADED SHAFT
TOP EDGE
RIM BEAD BLOCKS
OF