Nautilus Instinct, Owner'S Manual, Page: 10 / 20

10 NAUTILUS INSTINCT ABDOMINAL / LOWER BACK MACHINE O
WNER
’
S
M
ANUAL
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.