© 2021 CORE HEALTH & FITNESS LLC PART NUMBER 620-8823, REV E
All rights reserved. Star Trac, the Star Trac logo and StairMaster are registered trademarks of Core Health & Fitness,
LLC. Schwinn and Nautilus are registered trademarks of Nautilus Inc. used under license to Core Health & Fitness LLC.
Throwdown is a registered trademark of Throwdown Industries, LLC.
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Assembly Tools
Metric Allen Key Set
Metric Open-Ended Wrench Set
Loctite Blue
Needle-Nose Pliers
WARNING!
WARNING: to reduce the risk of serious injury to
persons using this equipment, read and follow all of these
warnings:
24 in (0.6 m)
Fig. 3
Required Clearance
1. Assemble and operate the unit on a solid level surface.
Position the machine with a minimum of 24 inches (0.6
meters) of clearance on one side to allow for ease of
mounting and dismounting. Leave a minimum of 19.7
inches (0.5 meters) between two adjacent units. These
dimensions are the recommended minimum distances.
The actual area for access and passage shall be the
responsibility of the facility and should take into account
this training envelope, Americans with Disabilities Act
Accessibility Guidelines (ADAAG) requirements and any
required local codes or regulations (www.access-board.
gov/ada).
2. This equipment is designed for use in a commercial
gymnasium or health club. To ensure the proper use
of the equipment in a safe manner, all users of the
equipment should read this manual before using the
machine. This machine should be made a part of your
club training program in order that the equipment is
used by your members in a safe manner as intended. In
addition to instructing the club members in the proper
use of the equipment, the club member should obtain
a complete physical examination form their health care
provider before beginning any exercise program.
3. The safety and integrity of this machine can only
be maintained when the equipment is regularly
examined for damage and wear and repaired. It is the
sole responsibility of the owner of this equipment to
ensure that regular maintenance is performed. Worn
or damaged parts must be replaced immediately or
the equipment removed from service until the repair is
made.
4. Do not exceed the maximum allowable weight limit of:
• 250 lbs. (113 kg.)
5. Use only replacement components supplied by
Nautilus®. Substitutes are forbidden and will void all
warranties.
6. This machine is not intended to be used by persons with
reduced physical, sensory, or mental capabilities or lack
of experience and knowledge, unless given instruction
and under the personal supervision concerning use of
the machine by a person responsible for their safety.
7. Keep children away.
8. The wrist straps must be worn at all times during use of
the equipment.
9. Ensure all adjustment and locking features are properly
secured before using the equipment.
10. When adjusting any seat, knee stabilization pad,
range of motion limiter, foothold pad or any other
type of adjuster, make certain that the adjusting pin
is fully engaged in the hole to avoid injury. If any of
the adjustment devices are left projecting, they could
interfere with the user’s movement.
11. Wear proper exercise clothing and athletic shoes during
a workout. Avoid wearing loose clothing. Tie back long
hair and keep towels away from the moving parts. Face
forward at all times and never attempt to turn around
while the machine is moving.
12. Do not over exert yourself during exercise. Stop
exercising if you feel pain or tightness in your chest,
become short of breath or feel faint. If you feel pain or
experience any abnormal symptoms, stop exercising
and consult your health care provider.
13. It is the purchaser’s sole responsibility to properly
instruct its end users and supervising personnel as
to the proper operating procedures of all Nautilus
equipment.
SAVE THESE INSTRUCTIONS
ASSEMBLY
All equipment can be secured (bolted and tightened) to a solid, level surface, using all 4 of the holes from the 731-
8951-XX & 731-8952 anchoring kit, to stabilize and eliminate rocking or tipping over. Shim any mounting surface that
does not rest thoroughly on the floor using flat washers, DO NOT force the foot to contact the ground with anchors.
See the online manual for reference images.
PACKAGING REMOVAL:
DO NOT USE A KNIFE OR BOX CUTTER AS YOU MAY DAMAGE THE EQUIPMENT.
1. Secure the seat bracket 731-8914 to the underside, and the
alignment bracket 731-8916 to the top of the frame using four (4)
pieces of the M8 narrow flat washers, and two (2) pieces each of the
M8 x 130mm socket head cap screw and M8 nylock nut.
Fig. 5 on page 9 - DO NOT FULLY TIGHTEN.
2. Finish securing the seat bracket to the frame using two (2) pieces
each of the M8 flat washer, M8 split lock washer, and M8 x 25mm
socket head cap screw
Fig. 6 on page 9 - DO NOT FULLY TIGHTEN.
3. Install the wrist straps
731-8953 by sliding them onto the handlebars over the handle plug
covers. The wrist straps should be orientated towards the user with
handles facing the seat/rear of the unit.
4. Slide the handlebars into the frame, then secure using two (2)
pieces each of the M8 flat washer, M8 split lock washer, and M8 x
30mm socket head cap screw
Fig. 7 on page 10 - DO NOT FULLY TIGHTEN.
5. Ensure that the handle plugs are fully seated inside the frame, then
finish securing the handlebars into the frame using two (2) pieces
each of the M8 flat washer, M8 split lock washer, and M8 x 30mm
socket head cap screw
Fig. 8 on page 10 - DO NOT FULLY TIGHTEN.
6. Assemble the seat and leg assembly using 4 each of the M8 flat
washer, M8 split lock washer, and M8 x 25mm socket head cap
screw per pad and one each to install the bump stop 731-8901. For
the seat pad the bracket 731-8926-XX goes between the pad and
the frame as shown.
7. Install the seat frame assembly into the seat bracket, then secure
using the axle 731-8917 ensuring that the axle is centered.
Fig. 9 on page 11
8. Slide a pedal 731-8918 onto the right side of the axle.
9. Secure the right pedal to the axle using the provided e-clip 140-
3773. Ensure that the clip is fully seated inside the groove located
on the axle 731-8917, then repeat for left pedal.
10. Check to ensure the pedals are centered through the seat frame
and properly secured to the axle. This will allow the pedals to be
evenly spaced and can spin freely without binding.
11. Tighten the set screws 110-4305 located on the seat bracket.
Fig. 10 on page 11
12. Push the rear leveling feet onto the ends of the frame then secure
using one (1) piece of the M6 x 8mm socket head shoulder bolt.
13. Tighten all hardware that was left loose from Step 1 thru Step 5.
Fig. 11 on page 12
14. Rotate both feet to level the unit.
Fig. 12 on page 12
15. Installation is complete.
Before using this product, it is essential to read the ENTIRE Owner’s Manual and ALL
installation instructions. The Owner’s Manual describes equipment assembly and
instructs members on how to use correctly and safely.
Read all warnings posted on the machine.
Health related injuries may result from incorrect or excessive use of exercise equipment.
Core Health & Fitness strongly recommends you to encourage your members to discuss
their health program or fitness regimen with a health care professional, especially if
you or they have not exercised for several years, are over 35, or have known health
conditions.
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