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Original Series – Monitor: How to replace the sensor disk (S4 and S4 Bluetooth Monitors)

Replacement of the sensor disk of your Original Series rower’s S4 Monitor or S4 Bluetooth Monitor is a relatively simple task to perform.

As a guide, watch the video below:

Side view diagram of the Original Series rower's S4 Monitor, illustrating the sensor disk replacement process with directional arrow.

Step 1

Remove the Handle from the handle rests and place the handle in the full forward position as shown.

Illustration showing a rower's S4 Monitor with a cable and pulley system for sensor replacement.

Step 2

Stand the WaterRower upright and disconnect the bungee as shown.

Illustration showing the components of a WaterRower with labels for JCB screw and Tie Rod.

Step 3

Lay the WaterRower down. Remove the Tie Rods and JCBs connecting the Top Deck to the Tank assembly as shown.

Diagram showing the WaterRower's top view with components for sensor replacement indicated.

Step 4

Remove the top deck assembly as shown, being careful not to dislodge the guide pulleys. You may have to disconnect the sensor wire plug.

Diagram showing the removal and replacement process of the sensor disk from a WaterRower S4 Monitor with an upward arrow indicating direction.

Step 5

Remove the Sensor Disk as shown.

Illustration showing the installation process of a sensor disk onto a WaterRower's Monitor. The diagram includes an arrow indicating direction for placement.

Step 6

Replace the Sensor Disk as shown.

Illustration showing the top view of a WaterRower with the top deck assembly highlighted for sensor disk replacement.

Step 7

Replace the top deck as shown.

Diagram illustrating the installation of screws on the top deck of a WaterRower, showing the position of the screws and the water tank.

Step 8

Replace the JCBs and Tie Rods connecting the Top Deck to the Tank assembly as shown. Ensure that the Tie Rod cross dowel slots are aligned with the Tie Rod. You may utilize a screw driver to assist this.

Illustration of a WaterRower with an upright position, showing the handle, bungee, and pulley system.

Step 9

Stand the WaterRower upright and connect the Recoil Belt to the bungee as shown.
Note: If the recoil belt buckle and D-ring have been removed it will be necessary to refit them before Step 9 may be completed. Refer to the Recoil Buckle Replacement Instruction for details.

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