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3. As shown in the figure, first connect the induction line at the main frame tube with the
induction line at the armrest tube, and insert the armrest slide rail tube into the front cover of
the chassis, and insert it into the frame head tube to align the holes. Insert the flat washer
and the screws in turn (flat washer for the plane, arc-shaped flat washer for the arc surface).
Tighten and fix it with a wrench. Finally, click down into the front cover of the chassis.
4. Take out the armrest, align the three holes on the armrest with the threaded holes on the
armrest fixing seat, pad the flat washer, and insert the cylinder-head screw (flat washer for
the flat surface and arc-shaped flat washer for the arc surface) to lock it with an Allen key.
Set the removed armrest cover to the position of the armrest as shown in the figure, and
align it with the 4 slots at the lower cover of the armrest slide rail. Press lightly down the
armrest cover and it will automatically be locked in place.
5. Take out the electronic watch. First remove the screws with an Allen wrench, take out the
back cover and insert the battery. 3. Use the screws just removed to align the holes and fix
them with an Allen wrench 4. After installing the above steps Insert the sensor line into the
electronic watch in the heart rate as shown in the figure.