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Rotary Hook Support Adjustment
The rotary hook support may need to be adjusted if a garment gets caught in the rotary hook, or if it is
loosened. The proper adjustment of the rotary hook support is based on proper needle case calibration,
please refer to the Needle Case Calibration procedure if necessary prior to completing the inspection.
Tools Needed:
• Hook Retaining Finger Gauge (PN: 009027-01) Thickness = 0.020”. Tolerance = 0.002”
• 2mm Allen Wrench
• 2.5mm Allen Wrench for the needle plate.
Figure 1 - Hook Retaining Finger Gauge
Inspection Procedure
1. Remove the bobbin case.
2. Remove the hook gaurd and needle plate.
a. Remove the hook guard by loosening the screws on both sides of the lower arm using a 2mm
hex wrench, and sliding the hook guard forward. The screws do not need to be completely
removed.
b. Remove the 2.5mm Allen screws that secure the needle plate.
Figure 2 – Needle Plate Screws
3. In the Bravo OS, click on Maintenance Menu and then click the Head Timing Tab.
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