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Original Series – Monitor: How to replace the monitor wire (S4 and S4 Bluetooth Monitors)

Replacement of the monitor wire of your Original Series rower’s S4 Monitor or S4 Bluetooth Monitor is a relatively simple task to perform. Follow the steps below:

Diagram illustrating the position of a wire connection for a rowing machine monitor, with an arrow indicating movement direction.

Step 1

Position the handle forward to the front Forward Riser pulley

Diagram showing the location of JCB bolts, upper tie rods, and barrel nut on a rower's monitor assembly.

Step 2

Carefully remove the Top Deck by removing the Top Deck JCBs and upper Tie Rods. Gently lift the Top Deck up being careful not to dislodge any of the guide pulleys. Unclip the sensor connector from the monitor wire assembly.

Illustration showing the handle position for the Forward Riser pulley on an Original Series rower.

Step 3

Remove the footboard handle rests, and loosen the rail and footboard JCNs and JCBs so the footboard can be moved away from the tank unit.

Step 4

Using the 5mm Allen key, remove the left key bracket (as viewed when sitting on the rower). Set the key bracket and its attaching hardware aside.

Illustration showing the back of an S4 Monitor, highlighting screw locations for battery cover removal and a Phillips screwdriver.

Step 5

Using a small Phillips screwdriver, remove the S4 Monitor batteries and battery cover.

Illustration showing the S4 Monitor with arrows indicating screws for removal.

Step 6

Using a small Phillips screwdriver, remove the 4 small screws and S4 Monitor board from the backplate housing.

Illustration showing the connection between a monitor wire assembly and the S4 Monitor with labeled plugs and connectors.

Step 7

Un-plug the wire assembly from the back of the monitor board. Pull the faulty wire assembly through the spigot tube to remove it and discard the faulty wire assembly.

Diagram showing the connection of the monitor wire assembly to the S4 Monitor.

Step 8

Feed the replacement wire assembly through the spigot tube and clip into the S4 Monitor board. The smaller white connector end of the wire assembly fits into the S4 Monitor board.

Diagram showing the S4 Monitor with arrows indicating the location of screws for removal.

Step 9

Reinstall the S4 Monitor board in its housing and reinstall the 4 small screws.

Illustration showing the battery compartment of an S4 Monitor, indicating the location of 4 AA batteries.

Step 10

Reinstall the batteries and battery cover.

Step 11

Reinstall the left key bracket.

Illustration showing components of the S4 Monitor assembly, including highlighted screws and a connector, with a focus on the footboard and rail attachment points.

Step 12

Reinstall the footboard and handle rests, keep handle rests loose.

Step 13

Plug wire assembly connector into the sensor connector and replace the top deck. Replace the upper Tie Rods and Top Deck JCBs.

Step 14

Tighten the handle rest bolts. Do not overtighten as damage to the key brackets may occur.

Diagram illustrating the position of the handle and the pulley system on an Original Series rower.

Step 15

Reposition the handle onto the handle rests — your rower is ready to use!

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