User´s manual legth adjustable crank arms
Version 2.0
Page 3 of 5
Maintenance
Warning: Retorque cranks and pedals
After the first 10 hours of use, the cranks and pedals need to get retorquened.
If they don´t get retightened, damage of the axis, pedals or cranks is possible and the warranty will not cover
the resulting damage.
Assembly manual
Necessary tools for assembly:
slot screwdriver small
open-end spanner SW 15 / 17 / 19
6-head socket SW 14
crank puller
torque wrench adjusted to 50Nm
Step 1 – Removing the pedals
Remove the pedals on the left and right with the open-end spanner SW15.
Attention:
The screwing on the left
side opens counterclockwise.
Step 2 – Loosening of the cranks at the axis
Remove the left and right black plastic cap with the help of the slot screwdriver, which covers the screwing of
the cranks. Loosen the screwing on both sides with the help of the torque wrench and the 6-head-socket SW 14.
Step 3 – Removal of the cranks from the axis
Screw the crank puller by hand on the thread. Turn the screw with the open-end spanner SW 17 clockwise until
the crank is loose. Remove the crank puller with the open-end spanner SW 19 from the cranks and bring it back
into starting position by turning clockwise. Do the same on the other side.
Step 4 – Assembly of the adjustable cranks
Remove the two plastic caps from both cranks. If the cranks aren´t in position “0” yet, please do so by opening
the locking lever and pulling the locking pin. The crank arms are marked with an R for the right and an L for
the left crank arm.
Attention:
The pedals may fall off if they are mounted on the wrong side! Put the crank with
the L on the left square of the axis. Screw the earlier removed screw with the torque wrench on the axis and
tighten it with 50 Nm. Do the same procedure for the right crank.
Step 5 – Mounting the pedals
The pedals are marked with an L and R as well. Make sure to assemble the pedals as marked. Screw the right
pedal clockwise and the left pedal counter clockwise. Transposition may cause loosening of the pedals.
Usage of the adjustable crank arms
As descriped in step 4, the cranks can get adjusted by loosening the locking lever (A) and pulling the locking pin
(B). You can read the position by the scale on the side. After adjusting, it´s very important that the locking pin is
back in position and the locking lever is in row with the crank (see picture). To get the locking lever in row with
the crank you can pull it and move it into the right position. Disregarding may cause injury of the user or
damage the cranks.
A
B
Summary of Contents for kardiomed 521
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