Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S.

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8024151.081519.A

Nautilus

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Recumbent Bikes Service Manual

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Floyd Marvbin

April 1, 2025

how to adjust resistance

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Mr. Anderson

April 1, 2025

To adjust resistance on the Nautilus R614:

1. Use the Resistance Level Increase (

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Summary of Contents for Nautilus R614

Page 1: Table Of Contents
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus, the Nautilus logo, and Nautilus Trainer are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 2: Important Safety Instructions
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus, the Nautilus logo, and Nautilus Trainer are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 3: Safety Warning Labels And Serial Number
Patent / Brevet: www.nautilusinc.com/IP 8004052_D 8004289_C Maximum User Weight: 300 lbs. (136 kg) Machine Weight: R614: 82.4 lbs. (38.2 kg) R616: 91.9 lbs. (41.7 kg) Power Requirements (AC Adapter): Input Voltage: 100 - 240V AC, 50/60Hz Output Voltage: 9VDC, 1.5A 49.6”...
Page 4: Maintenance
FCC Compliance the user’s authority to operate the equipment. The machine and power supply comply with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Page 5 The machine may be moved by one or more persons depending on their physical abilities and capacities. Remove the power cord. Use the Transport Handle to carefully lift the machine onto the transport rollers. Push the machine into position. Carefully lower the machine into position. NOTICE: Be careful when you move the bike computer operation.
Page 6 ® your results and share with friends and family. 1. Download the free Software App, named Nautilus Trainer™. The software app is available on the App Store and Google Play™. For a complete list of supported devices, review the software app on the App Store or Google Play™.
Page 7: Troubleshooting
Troubleshooting Condition/Problem Things to Check Solution No display/partial display/ Check electrical (wall) Make sure unit is plugged into a functioning wall outlet. unit will not turn on outlet Check connection at front Connection should be secure and undamaged. Replace of unit adapter or connection at unit if either are damaged.
Page 8 Condition/Problem Things to Check Solution Resistance does not Batteries (if equipped) Replace batteries and check for proper operation. change (machine turns on and operates) Check Console Check for visual sign that Console is damaged. Replace Con- sole if damaged. Check data cable integrity All wires in cable should be intact.
Page 9 Contact appsupport@nautilus.com (if inside US/Canada) or your local distributor (if outside US/Canada) for further assistance. Workout results not post- Sync accounts From the Menu icon on the Nautilus Trainer™ App, select the ing from Nautilus Trainer Sync to MyFitnessPal or Under Armour Connected Fitness.
Page 10: Console Service Mode
Console Service Mode – x614 / x616 series (MY14) Consoles The Console Setup Mode lets you input the date and time, set the units of measurement to either English or Metric, service technician use only). Hold down the PAUSE/END button and Right button together for 3 seconds while in the Power-Up Mode to go into the Console Setup Mode.
Page 11 All segments on Set individual segments one at a time until all segments are illuminated. 15 . The Console will display the Power-Up Mode screen. Console Service Mode – x616 series (MY17) Consoles The Console Setup Mode lets you input the date and time, set the units of measurement to either English or Metric, service technician use only).
Page 12 display shows an incorrect function, the overlay on the Console may be incorrect for that model. If the display Down). All LEDs On 1 second All segments on Set individual segments one at a time until all segments are illuminated. 13 .
Page 13: Maintenance Parts Exploded View
Maintenance Parts Exploded View Your machine may differ. Use only as a guide. R614 (MY14) Console Transport Wheel Drive Pulley Console Mast Pedals Servo Motor Seat Back Shroud, Right Brake Assembly Seat Cover Shroud, Upper Drive Belt Water Bottle Holder...
Page 14 R616 (MY14) Console Transport Wheel Drive Pulley Console Mast Pedals Servo Motor Seat Back Shroud, Right Brake Assembly Seat Cover Shroud, Upper Drive Belt Water Bottle Holder Shroud, Left Speed Sensor Magnet Handlebar, Side Crank Arm Speed Sensor Seat Bottom Console Cable, Lower Power Inlet Seat Adjustment Handle...
Page 15 R616 (MY17) Console Transport Wheel Drive Pulley Console Mast Pedals Servo Motor Seat Back Shroud, Right Brake Assembly Seat Cover Shroud, Upper Drive Belt Water Bottle Holder Shroud, Left Speed Sensor Magnet (8) Handlebar, Side Crank Arm Speed Sensor Seat Bottom Console Cable, Lower Power Inlet Seat Adjustment Handle...
Page 16: Replacement Procedure Skill Level
REPLACEMENT PROCEDURE SKILL LEVEL Level I : Low - very little mechanical knowledge or exposure. Level II : Intermediate - some experience with mechanical procedures Level III : Advanced - knowledgeable about mechanical procedures When disposing of old parts, obey the applicable local and provincial requirements. For instructions to replace the following parts, please refer to the Assembly Manual for your bike: •...
Page 17 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 18 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Figure 1 Remove the Top Shroud, Left Shroud and Right Shroud from the Main Unit.
Page 19 NOTICE: Be sure not to crimp any cables. U614/R614 bikes—To reinstall the Pedals, carefully align the threads and hand tighten to prevent cross-threading. Then tighten fully with pedal wrench. Note: The Left Pedal is reverse-threaded. Orientation is based from a seated position on the bike. The Left Pedal has an “L”, the Right Pedal an “R”.
Page 20 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 21: Console
NOTICE: It is necessary to remove the shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. Note: Your machine may not match the image. For reference only. Tools required: 6 mm hex key Disconnect and reconnect the AC Adapter from the wall outlet to turn the power off and on.
Page 22 To adjust the Brake tension, loosen the 2 hex head bolts (C) and move the Servo Motor assembly (D) until the closest point on the Brake Magnet (A) is within 3.0 mm (1/8”) of the Flywheel (B). Tighten the bolts. Note: If the cardboard is not 3mm (1/8”) thick, you can use the pages of a paperback book to measure the gap.
Page 23 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 24 Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Remove screws that attach Console to the Mast. Carefully lift the Console off the Mast. Disconnect the Data Cable and Heart Rate Cable from the back of the Console.
Page 25 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 26: Pedals
Note: Your machine may not match the image. For reference only. Loosen and remove the old Pedals. Discard the old Pedals. Note: The Left Pedal is reverse-threaded. Orientation is based from a seated position on the bike. The Left Pedal has an “L”, the Right Pedal an “R”.
Page 27 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 28 Note: Your machine may not match the image. For reference only. Loosen and remove the old Pedals. Set them safely aside for reassembly. Note: The Left Pedal is reverse-threaded. Orientation is based from a seated position on the bike. The Left Pedal has an “L”, the Right Pedal an “R”.
Page 29 Thread the Crank Puller into the Crank Arm (B). When the Crank Puller is in the correct position, only 1-2 threads on the outer portion (CP2) of the Crank Puller should show. Note: with the Nut (CP2) as shown, before use. Using a wrench, turn the inner portion (CP3) of the Crank Puller clockwise.
Page 30 Installation is the reverse procedure. Installation does not require the use of the crank puller. Be sure the Crank Arms are connected at 180° from each other. To reinstall the Pedals, carefully align the threads and hand tighten to prevent cross-threading. Then tighten fully with pedal wrench. Note: The Left Pedal is reverse-threaded.
Page 31 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 32 Note: Your machine may not match the image. For reference only. Place a static object (like a book or box) under the front stabilizer (C). The static object should not be compressible. Using a short #2 Phillips screwdriver, loosen and remove the screws (A1) from the Footpad (A), and set them safely aside.
Page 33 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 34: Shrouds
Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. To remove the Main Shrouds, start at Step 1. To remove only the Rear Shrouds, go to Step 11. 1-Piece Crank: 3-Piece Crank: Go to Step 5.
Page 35 Loosen and remove the Pedals. Set them safely aside for reassembly. Note: The Left Pedal is reverse-threaded. Orientation is based from a seated position on the bike. The Left Pedal has an “L”, the Right Pedal an “R”. Twist the Crank Covers toward the back of the machine to disengage the inner tabs.
Page 36 Using a #2 Phillips Screwdriver, remove the 4 screws (indicated) that the top screws. Slowly remove the Left Main Shroud. Set the hardware and Shroud safely aside for reassembly. Note: Find the Power Inlet (D) in the Left Shroud. Disconnect the Power Inlet cable (D1) from the wiring harness (E).
Page 37 To remove the Rear Shrouds:. 11. Remove the Front and Rear Top Caps: R614 bike—Bend the edges of the Top Caps to disengage the inside tabs from the Main Assembly, and remove. Set the Top Caps safely aside for reassembly.
Page 38 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 39 Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. 1. Remove screws that attach Console to the Mast. Carefully lift the Console off the Mast. 2. Disconnect the Data Cable and Heart Rate Cable from the back of the Console.
Page 40 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 41 Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Remove screws that attach Console to the Mast. Carefully lift the Console off the Mast. Disconnect the Data Cable and Heart Rate (HR) Cable from the back of the Console.
Page 42 Tie the length of string to the end (A) of the Data Cable at the base of the Mast. Hold the other end of the Data Cable (B) and carefully pull it out of the Mast so that the string extends through the length of the Mast. Untie the string from the old Data Cable and discard the old cable.
Page 43: Console Mast (Upright Handlebar Assembly)
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 44 Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Remove screws that attach Console to the Mast. Carefully lift the Console off the Mast. Disconnect the Data Cable and Heart Rate (HR) Cable from the back of the Console.
Page 45 Tie the length of string to the end (A) of the HR Cable at the base of the Mast. Hold the other end of the HR Cable (B) and carefully pull it out of the Mast so that the string extends through the length of the Mast. Untie the string from the old HR Cable and discard the old cable.
Page 46 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2016 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 47 Disconnect all power to the machine before you service it. Your machine may not match the image. For reference only. Loosen and remove the Seat Adjustment Handle. Set the Seat Adjustment Handle safely aside. Carefully remove the Seat Cover from the seat slider bracket.
Page 48 Carefully disconnect the Resistance and Heart Rate Cables. bracket arms at the front of the Seat Frame. Using a 6mm Frame. Remove the Seat Frame Assembly. Set the hardware and Seat Frame Assembly safely aside. NOTICE: Do not crimp any cables.This step may require two people.
Page 49 Using a #2 Phillips screwdriver, remove the screws that secure the Right Rear Shroud. Slowly remove the Right Shroud. Set the hardware and Right Shroud safely aside for reassembly. loosen and remove the hardware that attaches the back end of the Seat Rail. 11.
Page 50 12. Disconnect the HR and Resistance cables in the Seat Rail Assembly and the Frame. Carefully remove the Seat Rail Assembly from the Frame and set it safely aside. NOTICE: Do not crimp any cables.This step may require two people. 13.
Page 51: Brake Assembly
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 52 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. It may be necessary to adjust the Brake tension at the end of this procedure. Refer to the “Set the Brake Tension” procedure. Disconnect all power to the machine before you service it.
Page 53 Installation is the reverse procedure. Tape the cardboard to the new Brake Magnet. Be sure the cardboard will completely cover the new Brake Magnet before installation. NOTICE: Do not crimp the cables. Before fully attaching the Shrouds, remove the cardboard from between the Brake Magnet (A) and the Flywheel (B).
Page 54: Servo Motor
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 55 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. It may be necessary to adjust the Brake tension at the end of this procedure. Refer to the “Set the Brake Tension” procedure. Disconnect all power to the machine before you service it.
Page 56 Untie the string from the Console Cable (G). Use the pliers to unhook the Tension Spring (J) from the Main Frame. Pull back and release the Magnet Arm (K) enough to disengage it from the Motor Pulley Shaft (L). Loosen and remove the two hex head bolts (M) from the Servo Motor (A).
Page 57: Drive Belt And Flywheel Assembly
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 58 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. It is necessary to adjust the Drive Belt tension at the end of this procedure. Refer to the “Belt Tension Adjustment” procedure Disconnect all power to the machine before you service it.
Page 59 Using needlenose pliers, carefully release the spring (E1) on the Belt Tensioner (E). To remove the hardware from the Flywheel (C), use the 15 mm open end wrench to hold the nut (F) on one side steady and remove the nut on the opposite side with the 15 mm socket and wrench.
Page 60: Belt Tensioner Assembly (Idler Assembly)
Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 61 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. It is necessary to adjust the Drive Belt tension at the end of this procedure. Refer to the “Belt Tension Adjustment” procedure Disconnect all power to the machine before you service it.
Page 62 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 63 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. It is necessary to adjust the Drive Belt tension at the end of this procedure. Refer to the “Belt Tension Adjustment” procedure Disconnect all power to the machine before you service it.
Page 64 Carefully pull the Pulley Shaft Assembly (H) until it works out of the Frame and releases the Washer (J), Bumper (K), Bearings (L) and Bearing Brackets (M). Installation is the reverse procedure. NOTICE: Do not overtighten the crank hardware as this can damage the bearings.
Page 65 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 66: Rpm Sensor (Speed Sensor)
NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Carefully remove the Shrouds. Refer to the “Replace the Shrouds” procedure in this manual.
Page 67 Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.com | © 2014 Nautilus, Inc. | Nautilus and the Nautilus logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the United States and other countries.
Page 68 NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the “Replace the Shrouds” procedure. Disconnect all power to the machine before you service it. Note: Your machine may not match the image. For reference only. Carefully remove the Left Shroud. Refer to the “Replace the Shrouds” procedure in this manual.
Page 69 Loosen and remove the thin Nut from the Power Inlet (C) on the outside of the Shroud. Pull the Power Inlet plug (C) out of the hole toward the inside of the Shroud. Discard the old Power Inlet assembly. Installation is the reverse procedure. NOTICE: Do not crimp any cables.

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