Midwest RDH 740021 Installations-, Wartungs- Und Betriebsanleitung Seite 12

To remove head: Place wrench over prophy head. Loosen
head assembly by turning wrench counterclockwise. Unscrew
and remove head with fingertips.
To install or replace head: Screw prophy head onto sheath
assembly with fingers (clockwise). If the gears do not mesh
properly, back head off 1/4 turn; then retighten. Lock head onto
sheath by tightening with wrench.
Make sure prophy head is tightened securely before
operating handpiece.
11
Replaceable
Head
Mounting Prophy Right angles
RDH with U-Style attachment only—REF740001)
Remove
(for Midwest