I picked up an X4 for £12 a couple of years ago and thanks to the help on this forum got it working (it was just blocked) and refurbished it with parts from another X4 I got for £10 (motor and board burnt out
Anyway, I got a new service pack today and I ordered a new brush bar too as the old white bristle one was probably the original one and way looking sorry for itself. I put the new brush bar on and the machine doesn't work nearly as well now, it feels like its skating across the carpet and the brush bar isn't "digging" into the pile and fluffing it up like the old brush bar did. It isn't picking up as well either. No blockages and new bag/filters ok. Brush bar is spinning ok it seems.
Do I need to do some sort of reset when I fit a new brush bar? The height adjustment LEDs aren't on much.
I'm going to fit the old brush bar back on if I can't sort it!