How (and Why) to Level the Wheels of the Lägler HUMMEL®
You also will need a 13mm wrench for loosening the tension screw of the adjustable wheel (one comes. with buying a new HUMMEL). The wheel on the belt-guard side is fixed in position with a screw. The wheel on the other side is adjustable, and the tension screw for that is marked. on the machine with a black arrow.