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Husqvarna Viking Mega Quilter 18X8 service manual

This is a comprehensive service manual for Husqvarna Viking Mega Quilter 18 X 8 IV series

Remove Belt Guard ………………………………………………………………………………………………………………. 3
Replacing the Fuse ………………………………………………………………………………………………………………. 3
Removing side cover for access to Needle Sensor and Bobbin Winder ……………………………………….. 4
Needle Sensor …………………………………………………………………………………………………………………….. 5
Motor Sensor ………………………………………………………………………………………………………………………. 6
Bobbin Winder Adjustments ………………………………………………………………………………………………….. 7
Adjusting the height of the Hopping Foot ……………………………………………………………………………….. 9
Adjusting the stroke of the Hopping Foot ………………………………………………………………………………… 9
Removing the Front Cover …………………………………………………………………………………………………….. 10
Adjustment of the Presser Bar ……………………………………………………………………………………………….. 10
Presser foot lift bar / upper thread tension release …………………………………………………………………….. 11
Needle bar adjustment …………………………………………………………………………………………………………… 12
Timing the machine ……………………………………………………………………………………………………………… 13
Check spring / Tension assembly replacement …………………………………………………………………………. 15
Opening the Electronics Box …………………………………………………………………………………………………. 17
Disconnect Power supply ………………………………………………………………………………………………………. 18
Indicator lights and speed pot on the control board …………………………………………………………………… 19
Diagnostic Test with the control board ……………………………………………………………………………………. 19
Diagnostic Test with the handle bars ………………………………………………………………………………………. 22
Controller and Power supply compatibility chart ……………………………………………………………………… 25
Trouble Shooting Guide ………………………………………………………………………………………………………… 27
Technical Overview ……………………………………………………………………………………………………………… 29

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