Logosol M8 - Manual (Page 23)

The ratchet strap
Fit a ratchet strap around the side
boards approx. 10 cm below the
bottom, and one approx. 10 cm above
the future upper edge of the hot tub.
Let the buckles come at the side of
the back of the hot tub. Put some
protection under the buckle and the
hooks. Pull the straps gradually tighter
and gently knock on the side boards
with a rubber mallet until they have
formed a close circle. Measure against
the carved 20 mm line to make sure
that the distance between the line
and the boards is fairly the same all
around the tub. Do not worry if the hot
tub should creak.
Strapping the side boards together
The side boards are adjusted with a rubber
mallet until the distance between the 10
mm line and the boards is the same all
around the hot tub.