Rear Seat Height
The rear seat height can be adjusted to various
positions. By modifying the Rear Axle / Camber
Plate, the angle of the seat bucket can be ad-
justed to increase or decrease the amount of
pressure on the back bone. On the Boing! an
additional adjustment can be made to the rear
seat height by changing the settings on the rear
shock absorber spring. The amount of pressure
is frequently requested by a clinician.
Front Seat Height
The front seat height can be adjusted by repositioning the caster housing. In
addition there are three different axle and wheel sizes (small, medium and large)
available. By adjusting the front seat height you can increase or decrease the
amount of pressure on and position of the legs. The quick release front wheels
should be locked into position after adjusting and there should be no play in the
in the caster wheel. The wheel casters should be tightened periodically because
they tend to become loose after long periods of use.
Adjustments to the rear and front seat heights should
only be made by an authorized Colours dealer. We dis-
cuss them for informational purposes only.
12
Caster Angle
Caster Adjustment
Correct adjustment and alignment of the two front casters are important to
minimize turning resistance and to guarantee that the chair tracts in a
straight line. The chair must always be on a flat surface to make this ad-
justment.
As a rule of thumb, the angle of the caster axle should be 90˚ to the
ground. If the caster angle is more than 90˚, the turning resistance is in-
creased. The casters must be adjusted to 90˚ in both vertical plains.
If you experience front caster flutter (caster vibration) when pushing the
chair at increased speeds, the caster angle should be adjusted to an angle
slightly less than 90˚ to eliminate the problem.
Colours chairs are equipped with an unique camber disk. Rotating the disk
will adjust the camber left to right (see figure 1).
The caster housing (with slots) adjusts the front to back perpendicularity of
the caster (see figure 2).
THE CAMBER HOUSING
THE CAMBER HOUSING
FIGURE 2
FIGURE 1
THE CAMBER DISK
THE CAMBER DISK
Always make sure that the front casters are aligned
properly in relation to each other and that they rotate
freely in a horizontal plane. Adjustment to the wheel
alignment should only be made by an authorized
Colours dealer. We discuss it for informational purpose
only.
O W N E R ’ S M A N U A L
