The belt has moved over to the right side of the treadmill.
Here are two solutions one is to get the belt centered on the treadmill
and the other is to tighten the belt.There should be two bolts
in the rear of the treadmill, one on each
side. These bolts adjust the rear roller of the treadmill. The walking
belt will always go to the side that is looser. To get the belt back
on track, (if you can start the treadmill so the belt is running)
tighten the bolt on the side that the belt has slipped to. Tighten the
bolt a little bit at a time. If you tighten the bolt too much, then the
belt will go to the other side.To tighten the belt, start by
locating the two bolts that adjust the
rear roller (one on each side of the unit in the back). Run the unit at
about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that
what you do to one side, you MUST do to the other side or the belt will
get off center. After you tighten it 1/4 turn, check the belt to see if
it is still slipping. If it is then tighten the belt 1/4 turn again.
Continue until the belt does not slip, but do not tighten the bolts more
than 2 full turns.As far as the manual, I have not been able to found anything yet. Read More At : Exercise & Fitness...