Originally Posted by
Gambo
I am surprised no one has replied before but here goes:-
First of all make sure the end stop microswitch on the Z axis is in the right place. It is the switch on the right side of the printer which is pushed down by the cross bar as it comes down. The switch plate is fixed in place by 2 screws into nust in the in the grooves of the vertical pillar. The plate has a small protuberance on its side which should be above and touching the horizontal extrusion.
Once you are sure that is right tighten up the left hand front adjusting wheel to pull the bed down until the nozzle in it's auto home position is just above the bed.
Remember you don't raise the nozzle when levelling the bed but lower the bed, so tightening the screw of the adjustment wheel lowers the bed and pulls it away from the nozzle.
After this you can disable the stepper motors and level as normal but remember for more space under the nozzle tighten the screw and for less distance slacken the screw- counter-intuitive isn't it