My washing machine is leaving small bits of black

Sounds like you needs to give it a good clean through. Try a number of boil washes with no clothes and either white vinegar or brands of descaler. That should do it.

go to the manufactures website and download the user manual and look in the trouble shooting guide for an answer eric

The problem is most likely that there is still water residue at the bottom of your machine. If the machine is not fully drained it picks up some of the residue and sprays that onto the dishes during the final rinse, leaving an unhealthy and unsightly film on everything.
Remove the bottom strainers and make sure that there is nothing obstructing the outlet pipe and the pump. If possible back flush through the outlet pipe and try draining the machine again before using it again.

It's just a build up of residue. To clean out your drum, run a hot cycle (obviously with no clothes in the machine) with half a cup of vinegar then when the cycle is finished, wipe out all the residue, and trust me there will be alot. I do this every 3 months to give the drum a good clean out.

Clean the washer using Affresh.

Make sure detergent goes in before clothing.

Hi,
Draining problem is very common in Bosch washers. However, it is very easy to fix.

1) Remove the white circular plate, located on the bottom left. Push a small screwdriver or needle through it and simultaneously rotate the plate clockwise.
2) Open the drain valve. Rotate the circular black handle counterclockwise. Beware of residual water.
3) Clean it. Re-assemble in reverse order.
Thanks for contacting fixya.com

the top seal in the transmission is bad causing oil to get inside you will need to replace the trans but it will be cheaper to buy a new washer

take the front off the washer take the two hoses off the pump youll probably find where its stopped up

wash glases alone ad a jet dry aditive to detergant  Vitally