SCIFIT PRO1000 Sport, Service Manual, Page: 6 / 19

5
Table 2 – Mechanical Troubleshooting
Problem Possible Reasons Solutions
2.1 Poly-V belt (Item 69) is
slipping.
Belt tension is not
adjusted properly. See Procedure 5.
2.2 Excessive free play
exists when the cranks
are turned.
The chain(s) is too loose. See Procedure 6.
2.3 Machine makes noise
and feels rough when
the hand cranks are
turned.
Bearings (Item 8) in
handle (Item9) are faulty.
Chains are too tight.
Bearings on the hand
crank axles are faulty
(Item 94).
Bearings in Items 62
and/or 90 are faulty.
Bearings in the brake
assy. (Item 68) are
faulty.
Freewheel is faulty.
Rotate hand cranks about the hand
crank shaft (Item 12). Replace
bearings if source of noise.
See Procedure 6.
Remove the chains and rotate each
axle separately. Replace bearings if
source of noise.
With chains and poly-v belt (Item
69) removed, rotate each item
separately. Replace bearings if
source of noise.
With chains and poly-v belt
removed, rotate the brake assy.
Replace bearings if source of noise.
With the chains removed, rotate
each sprocket in the freewheel
direction. Replace if source of noise
and/or rough operation.
2.4 Crank bars (Item 101)
stick and/or slide
roughly into the crank
hub assy. (Item 105).
Crank bars have dents
and/or burrs. Inspect mating surfaces of crank
bars and hubs for burrs and sharp
edges. Burnish as required with a
fine file or emery cloth.
2.5 Freewheels (Item 64)
make grinding noise,
operate roughly, and/or
stick.
Freewheel is faulty.
Remove the chains and rotate each
sprocket in the freewheel direction.
Replace if source of noise and/or
rough operation.
2.6 Handles lock up while
operating.
Power supply board
(Item 87) is faulty.
Brake (Item 68) is faulty. Unplug power cord. If handles and
pedals now move freely, replace
power supply board.
If handles do not move with power
cord unplugged, replace brake. See
Procedure 4.