ManoMano SP37513DE Manual Del Usuario página 20

5. Adjustment of the motor belt (as shown below)
All treadmills have been adjusted before leaving the factory and after
installation, but there may be slack and slipping after a period of use, which
is mainly adjusted by the user.
Adjustment steps:
① Use a wrench to turn the Motor balance adjustment bolt counterclockwise
by half a turn.
② Turn the Belt tension bolt half a turn clockwise.
Note: Clean the belt and pulley groove regularly.
Belt tension bolt
Motor
Motor
belt
Motor balance
adjustment bolt
Front roller
20