User Manual
Stream MK3/SC2/SH65 series
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BELT TENSION ADJUSTMENT
Warning: a belt that is too tight can lead to offsets on the axis in question during printing, premature wear of the
belt and of the ball bearings. If you regularly experience lags in printing, loosen the belt of the axis concerned little
by little to see if the problem persists.
MK3 and SC2: Adjusting the tension of the Y-belt (platter)
Adjusting the tension of the Y-belt of the platen is done via two tension screws located behind the front Y-motor of
your printer (see photo below). Loosen the 4 side screws of the front Y motor (1) using a 2.5mm Allen key (just 2
turns are enough), then screw in to tighten or unscrew to loosen the adjustment screws behind the motor (2). Once
the correct tension has been obtained, firmly tighten the 4 side screws of the motor (1). A correctly tensioned belt
must be quite rigid, but must still be able to be "pressed" by putting your finger on it.
MK3 and SC2: Adjusting the tension of the X-belt (extruder)
Adjusting the tension of the X (extruder) belt is done via the X motor located on the left bearing of the X block.
Loosen the 4 screws of the motor (1) using a 2.5mm Allen key, just 1 or 2 turns is enough, then tighten the belt by
screwing or loosen it by unscrewing the tension screws at the rear of the motor bearing (2). Once the correct tension
has been reached, retighten the 4 motor screws (1).