Sweep System, Main Broom233Service Manual – Advance 7765 / Nilfisk CR1500Maintenance and AdjustmentsWarning! Before performing any machine maintenance or adjustments, make sure the keyswitch is off, the key is removed from the machine and the parking brake is engaged.To Adjust the Main Broom Height1. Loosen one of the Jam Nuts holding the Adjusting Rodin position on the Broom Lever Bracket.2. Adjust the position of the Jam Nuts on the AdjustingRod to raise or lower the main broom height asnecessary.3. When the main broom height is correct, tighten thetwo Jam Nuts. JamNutJamNutAdjustingRodBroomLeverBracket