Position of the hook and needle
Service Instructions 867-M PREMIUM - 03.0 - 05/2017 51
10.4 Setting the needle bar height
Order
First, check the following settings:
• Loop stroke position ( p. 48)
• A straight and undamaged needle has been inserted ( Operating
Instructions)
Proper setting
Machine is locked in place at position 1 ( p. 24).
The hook tip is level with the lower third of the groove on the needle.
Disturbance
Disturbances caused by an incorrect needle bar height
• Damage to the hook tip
• Jamming of the needle thread
• Missing stitches
• Thread breaking
• Needle breakage
To set the needle bar height:
1. Execute the service routine Needle Hook > Timing
( p. 14).
The software is used to define the necessary presettings on the
machine.
2. Remove the head cover ( p. 18).
Fig. 38: Setting the needle bar height
(1) - Needle bar
(2) - Screw
(3) - Needle groove
(4) - Hook tip
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