Back System; Backrest Angle; Adjustment Possibilities With Backrests Fixed By Being Bolted Onto Side Panels - ProActiv SPEEDY F4 Operating Instructions Service Booklet

Operating instructions SPEEDY F4 & F2
Size 3 Size 2
185 mm 155 mm
Figure 3: Caster fork sizes with marking of the same
seat height settings with different caster fork sizes
The instructions for replacing the caster forks
can be found in chapter 23.3.
When changing the angle of seat or front seat
height each time:

the wheel track of the drive wheels must
be checked and readjusted if necessary
(see chapter 22.2).

the caster wheel axles must be readjusted
(see chapter 23.4).

the backrest angle may have to be
repositioned (see chapter 19.1).

make sure the clearance under the footrest
is sufficient. Experience shows that this
should not be less than 4 cm (see
chapter 24).

if necessary, the height of the anti-tipping
support may have to be readjusted (see
chapter 25.3).
Size 1
125 mm
125 mm

19 Back system

Avoid falling into the seating and back
padding/back shell as it significantly increases
the risk of an adjustment, falling down or
defects.

19.1 Backrest angle

19.1.1 Adjustment possibilities with
backrests fixed by being bolted
onto side panels
With backrests screwed permanently onto side
panels, there are no possibilities for flexible
backrest adjustment without tools available.
Figure 4: Backrest screwed permanently onto side
panels, equipped with Carbon side parts with
integrated clothing protection
Depending on the type of the frame and
equipment, a permanent adjustment of the
backrest of 5° forwards or backwards is
possible using tools however. It is not possible
to make this adjustment with the Overlite frame
version with complete seat and backrest made
from one bended tube (SPEEDY F2). This
adjustment is possible in the frame versions of
the product with a separate back unit which are
also fitted

with an "Aluminium side panel", or

with an "Aluminium side panel with
screwed on clothing protection", or

with an "Aluminium side panel with
integrated clothing protection".
There are three holes in the rear of the side
panel on the top and bottom to position the
backrest tube. To adjust the backrest 5°
14