Singer 99 Series Service Manual Download Page 9

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To Adjust the Bobbin Case Position Bracket

If for any reason it becomes necessary to adjust the bobbin case position

bracket to obtain the proper thread space between the bobbin case and the

bobbin case bracket, loosen the screw (E, Fig. 3) and move the bracket until

there is between .010 to .015 of an inch space at the heel of the bobbin case

and the cushion spring, then securely tighten the screw (E, Fig. 3).

Summary of Contents for 99 Series

Page 1: ...SERVICE MANUAL FOR SINGER SEWING MACHINES Classes 66 99 and 185 ...

Page 3: ... and minus marks will be at the top with the minus sign to the left Then insert the tension spring F in the indicator with the first half coil of the spring straddling the lower half of the stud as shown in Fig 1d Place the stop washer E on the stud so that the extension will be above the tension stud Fig 1d ...

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Page 6: ...de plate slightly to the left then lift the right hand end and draw it toward the needle until it is disengaged from the spring A Fig 2 in the bed of the machine To replace the slide plate slip it into the slideway from the throat plate end as shown in Fig 2 being careful to see that both ends of the spring A enter the grooves on the underside of the slide plate ...

Page 9: ...in case position bracket to obtain the proper thread space between the bobbin case and the bobbin case bracket loosen the screw E Fig 3 and move the bracket until there is between 010 to 015 of an inch space at the heel of the bobbin case and the cushion spring then securely tighten the screw E Fig 3 ...

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Page 13: ... take out the screw N Fig 8 and remove the feed dog Also loosen the set screw P Fig 8 and lift out the bobbin case position bracket F Fig 5 Loosen the oscillating hook crank clamping screw O Fig 8 and loosen the presser bar bracket screw M Fig 7 and raise the presser bar high enough to permit the sewing hook to be lifted from the machine ...

Page 14: ...t point by the feed raising bar the top of the feed points will be about 3 64 inch above the top surface of the throat plate When it is necessary to raise or lower the feed dog loosen the feed dog screw N Fig 8 and set the feed dog in the required position then securely tighten the feed dog screw N ...

Page 15: ...foot and the throat plate When the presser bar is lowered the presser bar will be parallel with the feed dog In case the presser bar is not correctly set raise the presser bar lifter the loosen the presser bar bracket screw M Fig 7 and raise or lower or turn the presser bar until it is set in the correct position as instructed above then securely tighten the screw M ...