FERM belt slipping?

The belts on my FERM FBDS350 have started to slip and stall when sanding. Motor keeps going but the belts stop. Even new belts. I can't see any way of adjusting the pulley, other than the centering adjustment.

Richard Barton
September 2020

FERM FERM FBDS350 Power Tools, Sanders

is it the sander belt that is slip[ping? if so has the rubber drive belt inside worn?

Rupert
October 2021

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