Nautilus instinct, INSTINCT ROTARY TORSO Owner's Manual

Nautilus® Instinct®
 Abdominal / Lower Back Machine

OWNER’ S MANUAL

Introduction ........................................................................................................................................................................... 4

TABLE OF CONTENTS

Copyright 2016. Core Health and Fitness, LLC. All rights reserved, including those to reproduce this book or parts thereof
in any form without first obtaining written permission from Core Health and Fitness, LLC.

Every effort has been made to keep this information current; however, periodically, changes are made to the information
herein, and these changes will be incorporated into new editions of this publication. All product names and logos are
trademarks of their respective owners.

About This Manual .............................................................................................................................................. 4

Safety Instructions ................................................................................................................................................................ 5

Assembly and Setup ............................................................................................................................................................. 6

Parts and Materials ............................................................................................................................................. 6

Siting Requirements ............................................................................................................................................ 6

Unpacking ............................................................................................................................................................ 6

Assembly ............................................................................................................................................................... 7

Anchoring ............................................................................................................................................................. 12

Exercise Guidelines .............................................................................................................................................................. 12

General Guidelines............................................................................................................................................... 12

Product Use and Maintenance ............................................................................................................................ 12

Preventive Maintenance ........................................................................................................................................................ 13

Maintenance Schedule ......................................................................................................................................... 13

Maintenance Procedures ...................................................................................................................................... 14

Labels and Placards .............................................................................................................................................................. 16

Warranty and Disclaimer....................................................................................................................................................... 17

2 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 3

Thank you for choosing the NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE. This unit has been designed

INTRODUCTION

to provide the user the most rewarding experience based upon the carefully planned features it possesses. The design elements of
this product will provide you with a comfortable, intuitive, safe and reliable experience, guiding you to a habit-forming lifestyle.
Our mission is to provide products to mold lifelong habits for health and fitness, and the INSTINCT ABDOMINAL / LOWER
BACK MACHINE will provide the path to meet your goals.

ABOUT THIS MANUAL

This manual is applicable to the INSTINCT ABDOMINAL / LOWER BACK MACHINE. The manual is divided into eight
sections, as follows:

Introduction

Provides an overview of each section within the manual.

Safety Instructions

Provides guidelines for safely operating the INSTINCT ABDOMINAL / LOWER BACK MACHINE.

Assembly and Setup

Provides instructions for unpacking, assembling and setting up the INSTINCT ABDOMINAL / LOWER BACK

MACHINE.

Exercise Guidelines

Provides general guidelines to be followed when using the INSTINCT ABDOMINAL / LOWER BACK MACHINE.

Preventative Maintenance

Describes the preventative maintenance measures required to keep the INSTINCT ABDOMINAL / LOWER BACK

MACHINE in top condition.

Labels and Placards

Provides illustrations and part number information for labels and placards used on NAUTILUS INSTINCT products.

Regulatory Information

Provides warranty and servicing information for the INSTINCT ABDOMINAL / LOWER BACK MACHINE.

4 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

Read this Owner's Manual carefully before assembling, servicing or using your NAUTILUS INSTINCT ABDOMINAL / LOWER

SAFETY INSTRUCTIONS

BACK MACHINE.

WARNING: SERIOUS INJURY MAY OCCUR IF THESE SAFETY PRECAUTIONS ARE NOT OBSERVED.

UNDERSTANDING EACH AND EVERY WARNING TO THE FULLEST IS IMPORTANT. IF ANY OF THESE

WARNINGS ARE UNCLEAR, CONTACT NAUTILUS PRODUCT SUPPORT FOR CLARIFICATION.

1. Do not use any equipment in any way other than
designed or intended by the manufacturer. It is
imperative that weight stack machines as well as any
other NAUTILUS INSTINCT equipment is used
properly to avoid injury.

2. Make sure there is enough room for safe access and
operation of the NAUTILUS INSTINCT ABDOMINAL /
LOWER BACK MACHINE.

3. Keep hands, feet, head, limbs, fingers and hair clear at all
times from moving parts to avoid injury. Use appropriate
positioning, speed and controlled movements.

4. DO NOT use any equipment that is damaged and or has
worn or broken parts. Use only replacement parts
supplied by NAUTILUS.

5. DO NOT wear loose or dangling clothing while using the
INSTINCT ABDOMINAL / LOWER BACK MACHINE.
Keep away from all moving parts.

6. Obtain a medical examination prior to beginning an
exercise program.

7. If at any time during exercise you feel faint, dizzy or
experience pain, STOP IMMEDIATELY and consult your
physician before continuing.

8. Children must NOT be allowed to operate the

INSTINCT ABDOMINAL / LOWER BACK
MACHINE. Adolescents must be supervised when using
the INSTINCT ABDOMINAL / LOWER BACK
MACHINE.

9. DO NOT attempt to fix a broken or jammed unit. Notify
authorized personnel.

10. Use the INSTINCT ABDOMINAL / LOWER BACK
MACHINE only for the intended use. Obtain instruction
on proper use of the unit. It is the purchaser's sole
responsibility to properly instruct end users and
supervising personnel as to the proper operating
procedures of all NAUTILUS INSTINCT equipment. DO
NOT modify the unit.

11. Load plates evenly and carefully to avoid tipping
equipment and possible crushing injuries.

12. DO NOT use the INSTINCT ABDOMINAL / LOWER
BACK MACHINE if guards or shrouds are missing or
damaged.

13. USE A SPOTTER.

14. DO NOT add incremental weights, except those provided
by NAUTILUS.

15. MAINTAIN PLACARDS AND LABELS: Do not remove
labels for any reason; they contain important information.
If illegible or missing, contact the NAUTILUS Parts
Department for replacement.

16. SECURING EQUIPMENT: The INSTINCT
ABDOMINAL / LOWER BACK MACHINE MUST be
secured to the floor to stabilize and eliminate rocking or
tipping over. This must be performed by a licensed

contractor. DO NOT use the UNIT if it is not set up and
located on a solid level surface.

17. Make sure that each machine is set up and operated on a
solid level surface. DO NOT install equipment on an
uneven surface.

18. MAINTAIN ALL EQUIPMENT: Preventative
maintenance is the key to ensuring smooth and reliable
operation of the INSTINCT ABDOMINAL / LOWER
BACK MACHINE, as well as keeping your liability to a
minimum. Inspect the unit prior to use. Give particular
attention to the areas most susceptible to wear. DO NOT
use if the unit is damaged or inoperable.

19. Ensure that adjustment, maintenance and/or repair of
the INSTINCT ABDOMINAL / LOWER BACK
MACHINE is performed by qualified personnel ONLY.
Immediately replace worn or damaged components. If
unable to immediately replace worn or damaged
components then remove the INSTINCT ABDOMINAL /
LOWER BACK MACHINE from service until repairs are
made.

20. Keep a repair log of all maintenance activities.

21. Routinely inspect all accessory clips that join attachments
to weight belts or cables, and replace at the first sign of
wear.

22. Use only weight selector pins supplied by NAUTILUS on
weight stacks. Substitutes are forbidden.

23. Cables and belts pose an extreme liability if used when
frayed. Always replace any cable or belt at first sign of
wear (consult NAUTILUS Product Support if uncertain).

24. Fully insert the weight selector pin when selecting the
desired weight. Partially inserted pins can cause weights
to fall unexpectedly. NEVER remove the weight selector
pin if any weights are suspended. NEVER attempt to
release jammed weights or parts.

25. DO NOT use Lat Pulldown Bars on Multi-jungle
Crossover cable systems or any other pulley systems.
These bars are designed for lat pulldown machines ONLY.
If improperly used, the Lat Bar could fall unexpectedly,
striking the user when weight selector pin is removed.

26. Lat Pulldown Machines pose a danger if used with worn
or damaged cables and connecting links. The user can be
struck in the head if the cable or related parts break
during use.

27. When adjusting any seat, knee hold down pad, range of
motion limiter, foothold pad or any other type of adjuster,
make certain that the adjusting pin is fully engaged in
the retainer hole to avoid injury.

NOTE: It is the sole responsibility of the user/owner or facility
operator to ensure that regular maintenance is performed.

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 5

PARTS AND MATERIALS

ASSEMBLY AND SETUP

The following parts are included with the NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE:

1 Frame, Weight Stack 1
2 Leverage Arm 1
3 Stop Arm, Flywheel 1
4 Flywheel, Range-of-Motion 1
5 Frame, Center 1
6 Frame, Main 1
7 Post, Seat 1
8 Bracket, Seat 1
11 Footrest 1
12 Cushion, Seat 1
13 End Cap 1
14 Cushion, Back 1
18 Shroud, Lower, Front 1
19 Shroud, Lower, Rear 1
20 Shroud, Upper 2
24 Selector Pin 1
25 Cap, Rubber 2
26 Guide Post, Weight Stack 2
27 Pulley (factory installed) 4
28 Pulley (factory installed) 1
29 Plate, Top, Weight Stack 1
30 Clamp, Belt (factory installed) 1
31 Belt 1

32 Belt 1
35 Shaft, Leverage Arm 1
38 Counterweight, Leverage Arm 1
40 Support, Weight Stack 2
43 Spacer, Leverage Arm 2
45 Retainer, Belt 4
46 End Cap 1
50 Weight, 5lb 3
51 Weight, 10lb 8
53 Screw, Retaining 4
54 Screw, Button Head Socket Cap, 10X130M 6
55 Screw, Button Head Socket Cap, 10X80M 5
57 Screw, Button Head Socket Cap, 10X40M 2
58 Screw, Button Head Socket Cap, 10X30M 5
59 Screw, Flat Head Socket, 10X25M 3
62 Screw, Socket Head Cap, 8X20M 2
63 Screw, Button Head Socket Cap, 8X20M 6
67 Lock Nut, Nylon Insert, 10M 10
68 Nut, Tapped Hole 6
71 Washer, 11M 28
72 Washer, 9M 6
73 Washer, Spring, 11M 4
74 Washer, Spring, 9M 2

TOOLS REQUIRED

Most NAUTILUS INSTINCT machines can be assembled using the following tools:

 Metric Hex Key Wrenches - 2.5mm, 5mm, 6mm, 8mm,

10mm

 Metric Open-End Wrenches - 10mm, 15mm, 17mm
 Metric Ratchet Socket Wrench Set (including 17mm

socket)

 Torque Wrench

Your INSTINCT ABDOMINAL / LOWER BACK MACHINE includes a hex key set and combination open-end wrench.

 Channel Lock Pliers
 Vice Grip Pliers
 Rubber Mallet
 Phillips Head Screwdriver - #2

SITING REQUIREMENTS

Your INSTINCT ABDOMINAL / LOWER BACK MACHINE requires approximately 32 square feet of floor space to ensure
safe operation of the unit.

UNPACKING

Your INSTINCT ABDOMINAL / LOWER BACK MACHINE is shipped in one or more shipping cartons. Each carton will
generally contain one subassembly of the entire unit. To unpack:

 Remove the shipping straps from the outside of each shipping carton.
 Open the top of each carton and fold back all four flaps.
 Remove the packing materials, foam inserts, and ALL parts from each shipping carton. Keep the contents of each carton in a

separate area to facilitate assembly. To ensure personal safety during assembly, place all packing materials outside the
assembly area.

 Verify that all parts listed above are included in your shipment.

6 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

Take time now to enter your INSTINCT ABDOMINAL / LOWER BACK MACHINE serial number in the space below. If parts
are missing, or if you have any operational questions, please call Nautilus’s Service department at [phone]; have your
serial number ready.

Serial No. __________________________________________

ASSEMBLY

1. Assemble the Main Frame

Align the six drilled holes in the center frame (5)

with the mating holes in the side beam of the
weight stack frame (1). Secure the center frame
to the weight stack frame using four screws (54),
two screws (55), 12 washers (71), and six lock
nuts (67). Tighten the nuts securely.

Position the main frame (6) so the two drilled

holes in the center frame (5) are aligned with
the mating holes in the main frame.

Secure the main frame to the center frame

using two screws (54), four washers (71), and
two lock nuts (67). Tighten the nuts securely.

2. Install the Footrest

Hold the footrest (11) in place on the main

frame (6). Secure the footrest to the main
frame with one screw (55), two screws (58),
three spring washers (73) and three
washers (71). Tighten the screws securely.

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 7

3. Install the Leverage Arm

NOTE: Two people are required to install the

leverage arm; one to hold the leverage arm in
position, and one to install the leverage arm shaft.

Slide the leverage arm shaft (35) through the

support bearing in the center frame (5) until
the shaft extends midway between the center
frame and the support bearing in the weight
stack frame (1). Slide the leverage arm (2) onto
the leverage arm shaft.

Slide the leverage arm shaft (35) back toward

the weight stack frame, and install the following
items on the shaft, one at a time:

 Leverage Arm Spacer (43)
 Flywheel Stop Arm (3)
 Leverage Arm Spacer (43)
 Range-of-Motion Flywheel (4)

Continue to slide the leverage arm shaft (35)

into the support bearing in the weight stack
frame (1).

Secure the leverage arm shaft (35) to the center frame (5) and weight stack frame (1) using one screw (59), end cap (13),

screw (58), spring washer (73), washer (71) and end cap (46). Tighten the screws securely.

Slide the leverage arm counterweight (38) onto the leverage arm (2) and secure in place using two screws (62) and spring

washers (74). Tighten the screws securely.

Pull out on the leverage arm pull pin to retract the locking pin, and hold in the retracted position. Rotate the leverage

arm up, then release the locking pin. Continue rotating the leverage arm until the locking pin engages a drilled hole in
the range-of-motion flywheel ratchet.

4. Assemble the Weight Stack

Slide one weight stack support (40) onto each

weight stack guide post (26).

Insert the weight stack guide posts (26) into

the retaining holes in the base of the weight
stack frame (1). BE SURE the drilled ends of
the weight stack guide posts face upwards,
toward the top of the weight stack frame.

WARNING: TO PREVENT INJURY, IN-

STALL THE WEIGHTS ONE AT A TIME.

Install weights (50, 51, 52) on the weight

stack guide posts (26), one at a time, in the
following sequence:

 Weight, 10lb (51) - eight required
 Weight, 5lb (50) - three required

Slide the looped end of the lanyard on the selector

pin (24) onto the shaft of the top plate (29).

NOTE: BE SURE to hold the lanyard in

place when installing the top plate.

Install the top plate (29) on the weight stack

guide posts (26), inserting the top plate shaft
through the holes in the weights. Insert the selector pin (24) through one weight until it engages the top plate shaft.

Install one rubber cap (25) onto each weight stack guide post (26).

Lift up on one weight stack guide post (26) until the rubber cap (25) contacts the underside of the weight stack frame cross

member. Secure the post to the weight stack with one screw (58) and washer (71). Repeat for the remaining guide post.

8 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

5. Install the Weight Belts

NOTE: The Ab Back Machine uses two weight

belts; one weight belt (31) is attached to the top
plate (29) and the weight stack frame (1), and
one weight belt (32) is attached to a moveable
pulley/clamp combination (27/30) and the
range-of-motion flywheel (4). Each belt is
attached using cinch fasteners (see detail below).
Two people may be required to properly install
and tension the weight belts.

Remove the retaining screws (53) and belt

retainers (45) from the belt clamps on the
weight stack top plate (29), weight stack
frame (1), pulley/clamp combination (27/30)
and range-of-motion flywheel (4).

Insert one end of the weight belt (31) through the slot in the top plate belt clamp until approximately one inch of the free

end of the belt protrudes from the slot in the opposite side of the clamp.

While holding the free end of the belt, press down on the opposite side of the belt so it lays flat against the inside of the

clamp.

Insert the belt retainer (45) into the belt clamp. BE SURE the tapped hole in the belt retainer is aligned with the mating

hole in the belt clamp.

CAUTION: BE SURE to keep the weight belt straight when installing the retaining screw (53) in the belt

retainer (45). Misalignment of the weight belt may bias the top plate, which can cause excessive contact of
the top plate shaft with the weights, resulting in excessive noise during use, and potential hazards to the
user or other bystanders.

Thread the retaining screw (53) through the belt clamp and into the belt retainer (45). Tighten the retaining screw to

400 inch-pounds.

Route the weight belt (31) over two pulleys (27) (factory installed) and around pulley/clamp combination (27/30), as

illustrated.

Insert the free end of the weight belt (31) through the slot in the weight stack frame belt clamp, and pull through the

opposite slot just until force is applied against the top plate (29). This will eliminate any slack in the belt and ensure
proper tensioning.

While maintaining tension on the weight belt, press down on the free end of the belt so it lays flat against the inside of

the belt clamp.

Insert the belt retainer (45) into the belt clamp. BE SURE the tapped hole in the belt retainer is aligned with the mating

hole in the belt clamp.

Thread the retaining screw (53) through the belt clamp and into the belt retainer (45). Tighten the retaining screw to

400 inch-pounds.

Check for proper tensioning of the weight belt by applying lateral pressure to the belt at a point midway between two

pulleys. Deflection of the weight belt should be less than 25 mm. Loosen the retaining screw (53) and adjust belt tension
as needed.

Insert one end of the weight belt (32) through the slot in the moveable belt clamp until approximately one inch of the

free end of the belt protrudes from the slot in the opposite side of the clamp.

While holding the free end of the belt, press down on the opposite side of the belt so it lays flat against the inside of the clamp.

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 9

Insert the belt retainer (45) into the belt clamp. BE SURE the tapped hole in the belt retainer is aligned with the mating

hole in the belt clamp.

CAUTION: BE SURE to keep the weight belt straight when installing the retaining screw (53) in the belt

retainer (45). Misalignment of the weight belt may bias the top plate, which can cause excessive contact of
the top plate shaft with the weights, resulting in excessive noise during use, and potential hazards to the
user or other bystanders.

Thread the retaining screw (53) through the belt clamp and into the belt retainer (45). Tighten the retaining screw to

400 inch-pounds.

Route the weight belt (32) over two pulleys (27, 28) and around range-of-motion flywheel (4), as illustrated.

Insert the free end of the weight belt (32) through the slot in the range-of-motion flywheel belt clamp, and pull through

the opposite slot just until resistance is felt. This will eliminate any slack in the belt and ensure proper tensioning.

While maintaining tension on the weight belt, press down on the free end of the belt so it lays flat against the inside of

the belt clamp.

Insert the belt retainer (45) into the belt clamp. BE SURE the tapped hole in the belt retainer is aligned with the mating

hole in the belt clamp.

Thread the retaining screw (53) through the belt clamp and into the belt retainer (45). Tighten the retaining screw to

400 inch-pounds.

Check for proper tensioning of the weight belt by applying lateral pressure to the belt at a point midway between two

pulleys. Deflection of the weight belt should be less than 25 mm. Loosen the retaining screw (53) and adjust belt tension
as needed.

6. Install the Seat and Back Cushions

Hold the seat bracket (8) in place on the seat

post (7). Secure the seat bracket to the seat
post with two screws (59), washers (71) and
lock nuts (67). Tighten the nuts securely.

Hold the seat cushion (12) in place on the seat

bracket (8). Secure the seat cushion to the seat
bracket with two screws (57) and washers (71).
Tighten the screws securely.

Hold the back cushion (14) in place on the seat

bracket (8). Secure the back cushion to the
seat bracket with two screws (55) and washers
(71). Tighten the screws securely.

Slowly slide the seat post (7) into the seat

post guide in the main frame (2). While
holding the seat post, press the ratchet
handle to retract the locking pin, and slide
the seat post fully into the seat post guide.

Release the ratchet handle. Slowly lift the

seat post until the locking pin on the ratchet
handle locks into a drilled hole in the seat
post.

10 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

7. Install the Weight Stack Shrouds

NOTE: It is necessary to flex the lower shrouds

(18, 19) slightly to engage the mating grooves
in the weight stack frame (1).

Slide the lower front shroud (18) into the

mating grooves in the weight stack frame (1).
Slide the lower rear shroud (19) into the
mating grooves in the weight stack frame.

Install one tapped hole nut (68) onto each of

the six upper shroud mounting tabs on the
weight stack frame (1).

Hold one upper shroud (20) in position

against the weight stack frame (1), and
secure the shroud to the frame using three
screws (63) and washers (72).

Repeat for the remaining upper shroud (20).

8. Final Assembly and Testing

Check all attaching parts to ensure they are

tightened securely.

Verify operation of the seat post:

 Mount the unit. While holding the seat post,

press the ratchet handle to retract the locking
pin, and raise the seat. Release the ratchet
handle, and verify the locking pin engages the
first drilled hole at the first seat position.

 Repeat to verify the locking pin engages

the drilled hole at all seat positions.

 Return the seat post to the "stowed" position.
 Verify the seat post slides smoothly,

without evidence of sticking or binding.

Verify operation of the leverage arm:

 Pull out on the leverage arm pull pin to

retract the locking pin, and hold in the
retracted position. Rotate the leverage
arm upward, then release the locking pin.
Verify the locking pin engages a drilled
hole in the flywheel ratchet.

 Repeat to verify the locking pin engages the drilled hole at all leverage positions.
 Return the leverage arm to the first position.

Mount the unit. Engage the selector pin at a comfortable weight. Adjust the seat post and leverage arm as desired.

Operate the leverage arm and check the following:

 Verify operation of the leverage arm is smooth, without evidence of sticking or binding.
 Verify there is no evidence of "free play" when actuating the leverage arm from the "stowed" position.
 Verify there is no evidence of excessive noise during operation.

Return the leverage arm to the "stowed" position.

You have now completed assembly of your INSTINCT ABDOMINAL / LOWER BACK MACHINE.

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 11

ANCHORING

EXERCISE GUIDELINES

IMPORTANT: The INSTINCT ABDOMINAL / LOWER BACK MACHINE must be secured to

the floor to stabilize and eliminate rocking or tipping over. This must be performed by a

licensed contractor. Failure to anchor the unit will void the warranty. NAUTILUS shall

not be liable for damage or injury caused by unanchored or improperly anchored units.

The INSTINCT ABDOMINAL / LOWER BACK MACHINE must be anchored to the floor using through bolts or anchoring
studs. Each foot pad on the unit provides two anchoring holes that will accommodate bolts of up to 12mm (7/16") diameter. Only
one hole in each foot pad is required during anchoring. The holes used for anchoring may be selected based on installation site
requirements or customer preference.

Anchoring bolts/studs must meet the following requirements:

 Anchor bolts shall be Grade 8.8 or Grade SAE 5.
 Anchoring bolts or studs shall have a minimum size of 6mm (1/4") diameter; 8mm (5/16") diameter bolts/studs are

recommended.

 Pull-out force shall be 100kg (2201 lbs) minimum for any single anchor. This will ensure a secure anchoring system and safe

operation of the unit by all users.

GENERAL GUIDELINES

As with any exercise program, strength training involves an element of risk. The information provided in this section will help you
and/or your members make safe and productive use of your NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE.

 ALWAYS consult a physician before beginning any strength-training program. This is particularly important for persons

with known health conditions and/or persons that are not familiar with the risks involved with weight training.

 All training sessions should be supervised by trained personnel.
 BE SURE that all warning labels and placards affixed to the INSTINCT ABDOMINAL / LOWER BACK MACHINE

remain on the unit. DO NOT alter warning labels and placards. BE SURE that each user reads and understands the
information shown on all labels and placards (safety, instructional and/or other).

 Instruct all users on the proper use of the INSTINCT ABDOMINAL / LOWER BACK MACHINE, as well as those actions

that should be avoided.

 Your INSTINCT ABDOMINAL / LOWER BACK MACHINE has been designed to accommodate a wide variety of body

types. Prior to use, mount the unit and adjust the seat height to ensure comfortable operation of the leverage arm.

To minimize user and/or bystander injury:

 Do not lean the against framework, weight stack or any component, regardless of whether it is dynamic or static.
 Stay clear of all components while in a dynamic state of motion. Keep hands and feet away from cables, belts, cams and

pulleys and/or any converging action. The convergence of these transmission-based components can cause serious injury.

 Exercising on free weight and selectorized products should be performed with the assistance of a spotter.

PRODUCT USE AND MAINTENANCE

Repair of the INSTINCT ABDOMINAL / LOWER BACK MACHINE should be performed only by authorized persons.

NEVER modify the INSTINCT ABDOMINAL / LOWER BACK MACHINE or attempt to make adjustment(s) to, or the repair
of, the unit equipment without first calling NAUTILUS Product Support. Always notify authorized personnel to make such
repairs.

Instruct all users to report any equipment or training irregularities to supervisory personnel IMMEDIATELY.

12 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

PREVENTIVE MAINTENANCE

CAUTION: Do not "high pin" and/or "double pin" a weight s7307245-tack. This
action is considered to be dangerous to users, and bystanders, and may damage
your INSTINCT ABDOMINAL / LOWER BACK MACHINE. Aside from the
mechanical damage that may result, such action(s), in part, may cause the weight
stack to crush or pinch fingers, hands and/or extremities. DO NOT use the unit if
the top plate is elevated and/or pinned in a raised position. Seek assistance from
authorized personnel to correct such a condition.

MAINTENANCE SCHEDULE

Nautilus strongly recommends performing regular preventive maintenance on your NAUTILUS INSTINCT ABDOMINAL
LOWER / BACK MACHINE. Without regularly scheduled maintenance, normal wear and tear may cause cumulative effects,

such as misalignment or premature wear, resulting in downtime. For this reason, we highly recommend following the
maintenance schedules. Additionally, unusual symptoms, such as excessive noise during use, stiffness or free play in moving
parts, etc., should be investigated and necessary corrective actions (adjustment or parts replacement) should be performed. I f any
components are found to be worn or damaged, the unit should be removed from service until repairs can be made. Only
components supplied or approved by Nautilus shall be used to maintain and/or repair the unit.

DAILY MAINTENANCE

 Wipe down and inspect the framework and other structural components (see FRAMEWORK MAINTENANCE on page 14 for

requirements). Check all attaching hardware for security. Tighten as needed.

 Clean and inspect the upholstered cushions and the hand grips (see UPHOLSTERY MAINTENANCE on page 14 for

requirements).

 Clean and lubricate guide rods using a cotton cloth and break-free lubricant. Apply the lubricant to the cloth, then wipe up

and down the guide rods as needed.

 Inspect weight belts for excessive wear or other damage. Check weight belts for proper tension (weight belt deflection at any point

should not exceed 25 mm); adjust as needed. (See WEIGHT / BELT INSPECTION REQUIREMENTS on page 15 for requirements.)

 Check leverage arm bearings for evidence of sticking or binding; lubricate as needed (bearings are equipped with fitting to

facilitate lubrication).

WEEKLY MAINTENANCE

 Check the retainer screws at the weight stack top plate, weight stack frame, moveable clamp and range-of-motion flywheel

for security (retainer screws should be torqued to 400 inch-pounds). Tighten as needed.

 Check all labels and placards affixed to the unit for legibility and security. Replace illegible labels and placards as needed

(see LABELS AND PLACARDS on page 16 for illustrations and part numbers of standard labels and placards used on
NAUTILUS INSTINCT products).

MONTHLY MAINTENANCE

 Clean tops of bearings at weight stack top plate. Check for heavy buildup on guide rods below top plate (lift half of weight

stack to perform a visual inspection and clean as necessary).

QUARTERLY MAINTENANCE

 Apply wax to powder-coated areas of the framework and other structural components.

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 13

MAINTENANCE PROCEDURES
FRAMEWORK MAINTENANCE

CAUTION: DO NOT use lacquer thinner, acetone, or other solvents to clean powder-coated finishes on the framework
or other structural components. Solvents will dull the finish, and contain components that may remove the epoxy­based powder from the frame.

Framework and other structural components should be wiped down on a daily basis using a moistened with water. This will increase
the longevity of protective powder-coat finishes. The framework should be inspected while cleaning for evidence of fatigue cracks,
scratches or chips in the finish, loose hardware, worn or damaged weight belts, and other areas that may require attention.

Apply easy-application car wax to all powder-coated surfaces quarterly. Regular waxing will aid in preventing premature rusting
due to corrosives found in perspiration, and will allow loose particles to be removed more easily when performing the daily wipe­down.

Procedures to repair scratches and chips depend on the severity of the damage:

 Surface scratches can generally be repaired by polishing with an automotive rubbing compound.
 Deep scratches and chips must be repaired by filling the damaged area using a “touch-up” bottle of color-matched paint

(available through the NAUTILUS Parts Department). Fill the damaged area sparingly, using two or more coats. Allow the
area to dry thoroughly between coats. Once the touch-up is complete, it can be left “as is”, or it can be blended and color­sanded to the surrounding surface.

NOTE: The process of blending and sanding repaired areas to the surrounding surface is difficult. It should be attempted ONLY
by persons knowledgeable in this area.

The weight stack shrouds are made of PETG (glycol-modified polyethylene terephthalate). Proper cleaning is necessary to
preserve the appearance of the shrouds. The following cleaners are compatible with PETG: Original Dawn®, Freon® T.F.,
Palmolive Liquid®, Top Job® and Windex® with Ammonia D.

CAUTION: Use ONLY recommended cleaning agents and procedures when cleaning the weight stack shrouds:

 DO NOT use abrasive or highly alkaline cleaners to clean the shrouds.
 DO NOT scrape the shrouds with squeegees, razor blades or other sharp instruments. DO NOT scrub or use

brushes on the shrouds.

 DO NOT use Benzene, gasoline, acetone or tetrachloride to clean the shrouds.
 DO NOT clean the shrouds in hot sun or at elevated temperatures.

Wash the shrouds using a clean sponge or soft cloth, and a solution of mil d soap or detergent and lukewarm water. Rinse well
with clean water, and dry thoroughly with a chamois or moist cellulose sponge to prevent water spots.

Remove stubborn accumulations (paint, grease, scuff marks) before drying by rubbing lightly with Isopropyl alcohol. Remove
labels, placards or other adhesive residue using kerosene. If solvent does not penetrate the adhesive, heat the area using a hand­held blow dryer to soften the adhesive and aid in removal.

Clean all areas treated with solvent using a clean sponge or soft cloth, and a solution of mild soap or detergent and lukewarm
water. Rinse thoroughly with clean water.

UPHOLSTERY MAINTENANCE

CAUTION: DO NOT use cleaners such as Lysol®, Armor All®, Windex®, or other abrasive detergents to clean
upholstered surfaces. These products will remove moisture from the Naugahyde® upholstery, resulting in
premature cracking.

Upholstered cushions should be cleaned on a daily basis to prevent damaged due to corrosives found in perspiration.

Wipe the top and sides of upholstered cushions using a cloth moistened with a solution of one part lanolin hand cleaner to nine
parts water. After cleaning, wipe down using a dry towel to remove any residue.

14 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

WEIGHT BELT INSPECTION REQUIREMENTS

WARNING: REPLACE WORN WEIGHT BELTS IMMEDIATELY. FAILURE TO COMPLY CAN RESULT IN
HAZARDOUS CONDITIONS FOR USERS OR OTHER BYSTANDERS.

Inspect all weight belts for evidence of excessive wear or other damage. Give particular attention to the following conditions:

 Torn or cracked belt

 Exposed belt cords

 Worn edges

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 15

LABELS AND PLACARDS

16 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

NAUTILUS warrants all frameworks for a period of 10 years. All moving parts are warranted for 1 year. 10 year limited warranty on structural

WARRANTY & DISCLAIMER

frame not including coatings. 90 days on upholstery stitching only, cables and belts. Warranty is for parts only. Warranty is good and available to
the original purchaser only as noted by NAUTILUS invoice and is not transferable nor assumable. NAUTILUS cannot warrant products that
have been abused, neglected and or poorly maintained. All equipment should be reviewed at the time of delivery for damage, breakage, loosening
of nuts and bolts, components and or any other moving parts. Any and all claims for warranty must be received in writing within 70 days of
defect. Do not alter, modify or redesign any NAUTILUS products or use any replacement parts or materials other that those components original
to NAUTILUS as it will limit the warranty and liability of NAUTILUS. NAUTILUS reserves the right to change, replace or modify products,
parts, accessories and or design without notice. Deposits on cancelled orders will be subject to handling and restocking charges.

WHAT IS COVERED

This NAUTILUS INSTINCT ABDOMINAL / LOWER BACK
MACHINE is warranted to be free of all defects in material and

workmanship.

WHO IS COVERED

The original purchaser or any person receiving the Product as a gift
from the original purchaser.

WHO PAYS TRANSPORTATION & INSURANCE FOR SERVICE

If the Product or any covered part must be returned to a service
facility for repairs, We, NAUTILUS, will pay all transportation and
insurance charges for the first year. You are responsible for
transportation and insurance charges for all subsequent years.

WHAT WE WILL DO TO CORRECT COVERED DEFECTS

We will ship to you any new or rebuilt replacement part or component,
or, at our option, replace the Product. Such replacement parts are
warranted for the remaining portion of the original warranty period.

WHAT IS NOT COVERED

Any failures or damage caused by unauthorized service, misuse,
accident, negligence, improper assembly or installation, debris
resulting from any construction activities in the Products
environment, rust or corrosion as a result of the Product(s) location,
alterations or modifications without our written authorization or by
failure on your part to use, operate and maintain the Product as set
out in your Owners Manual.

OWNERS MANUAL

It is VERY IMPORTANT THAT YOU READ THIS MANUAL before
operating the Product. Remember to perform the periodic
maintenance requirements specified in the Manual to assure proper
operation and your continued satisfaction.

HOW TO GET PARTS & SERVICE

Simply call Customer Support Services at [phone] or (951) 600­3800, Monday through Friday from 8:00 a.m. to 5:00 p.m. Pacific
Standard Time, and tell them your name, address and the model
number of your Product. They will tell you how to get a replacement
part, or, if necessary, arrange for service where your Product is
located or advise you on how and where to ship the Product for service.
You can also contact us via Fax at [phone] or e-mail us at

Before shipping:

1. Obtain a Return Authorization Number (RA#) from Customer
Support Services

2. Securely pack your Product (use the original shipping carton, if
possible)

3. Write the RA# on the outside of the carton

4. Insure the Product, and

5. Include a letter explaining the defect or problem and a copy of your
proof of purchase if you believe the service is covered by warranty.

EXCLUSIVE WARRANTY

THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES OF ANY KIND EITHER EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, AND ALL OTHER OBLIGATIONS OR LIABILITIES ON
OUR PART. We neither assume nor authorize any person to assure
for us any other obligation or liability concerning the sale of this
Product. Under no circumstances shall we be liable under this
warranty, or otherwise, of any damage to any person or property,
including any lost profits or lost savings, for any special, indirect,
secondary, incidental or consequential damages of any nature arising
out of the use of or inability to use this Product. Some states do not
allow the exclusion or limitation of implied warranties or of liability
for incidental or consequential damages, so the above limitations or
exclusions may not apply to you.

CHANGES IN WARRANTY NOT AUTHORIZED

No one is authorized to change, modify or extend the terms of this
limited warranty.

EFFECT OF STATE LAWS

This warranty gives you specific legal rights and you may have other
rights, which vary, from state to state.

OUR PLEDGE TO YOU

Our Products are designed and manufactured to the highest standards.
NAUTILUS wants you completely satisfied with our Products and will
do everything possible under the terms of this warranty to keep you
secure in knowing you have bought the best!

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 17

18 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL

NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE OWNER’S MANUAL 19

MANUFACTURER

4400 NE 77th Avenue, Suite 300, Vancouver, WA 98662 USA

Tel [phone]

www.corehandf.com

CUSTOMER SUPPORT

Contact your local distributor, or Core Health & Fitness directly at:

Tel [phone]

[e-mail]

P/N: 730-7245. April 2016