Essilor Pro-E 700 edger - Page 173

Loosen the chuck with the adjustable wrench (two notches towards yourself).
Remove the adjustable wrench then the drill bit.
Insert the engraving tip all the way, then tighten the chuck firmly by hand.
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USER MANUAL> V. MAINTENANCE & SERVICING
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Pro-E 600_Pro-E 700 > v1 -10.18