Elna 660 Experience Sewing Machine Service Manual
* Service access.
* Adjusting presser foot height and alignment.
* Needle drop position alignment.
* Adjusting hook timing.
* Adjusting clearance between needle and hook.
* Feed dog height and adjustment.
* Zigzag synchronization.
* Connector diagram.
* Self diagnostic test.
* Replacing printed circuit board.
* Replacing dc motor and adjusting motor belt tension.
* Kneed lifter adjustment height.
* 37 page service manual
Elna eXperience 660 (Elna 6600)