Stairmaster Crossrobics 1650 LE, Owner'S Manual

Page: 44 / 108

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2. Remove the seat, seat tray and the left side cover.
• Inspect the weight stack belt for undue wear and/or fraying. The
3/4" (2 cm) weight stack belt is made of Kevlar fibers and can
withstand rather severe fraying. Replace the belt if it wears to two-
thirds of its original width (i.e., 1/2" or 1 cm).
• The frame-end junction of the belt is located on the bottom frame
rail (see Figure15). Plug in the machine and inspect this end of the
belt by repeatedly pushing down on the left pedal arm, raising the
floating pulley assembly until it contacts the upper stop. Allow the
weight stack to fall and inspect the rest of the belt through the slot
in the weight stack covers. Unplug the machine.
• Inspect the weight stack belt connector plates at both ends of the
belt (see Figure 14). The plates should be evenly tensioned with a
parallel gap between them. Inspect the belt at the connections.
Visible serrations on the weight stack belt above the connector
plates indicate belt slippage that should be corrected immediately.
• Inspect the alternator reduction and the drive reduction belts for
wear and proper tension. You should be able to deflect the belt
approximately 1/4" (0.6 cm) in either direction with your fingertip
(see Figure 8).
• Carefully turn the 8-inch Poly-V pulley counterclockwise and check
for smoothness of operation. If noise or roughness of operation is
present, you must inspect the pivot shaft assembly.
• Inspect the pedal arm return springs at both connection points.
Replace broken spring(s).
3. Reinstall the left side cover, the seat tray and the seat.
MAINTENANCE INSTRUCTIONS
!
WARNING
TO REDUCE THE RISK OF INJURY, DO NOT EXERCISE ON THIS MACHINE
WHILE THE SIDE COVERS ARE REMOVED. DO NOT DEPRESS OR RAISE THE
PEDALS WHILE ANYONE'S HANDS ARE INSIDE THE MACHINE. DO NOT WEAR
LOOSE CLOTHING OR NECKTIES WHILE WORKING ON THIS MACHINE.