Newlong NP-7A - 5. ADJUSTMENTS; Thread Tension Adjustment; Needle and Looper Positioning; Feed Dog Positioning

5.ADJUSTMENTS
Important!
When adjusting the machine or replacing parts, always
disconnecttheElectricCordfromthepowersource.
This is important in view of safety to the operator and
adjuster.


1.ThreadTension(Fig.10)
Thethreadtensionspringispresetatthefactorytosew
PPwovenclothbags.Ifsomeadjustmentisneeded,first
loosen screw
○
A (9/64S40054) and adjust the thread
tension nut
○
B (245092) as per Fig.10. When the
adjustmentisfinished,retightenscrewtolockthethread
tensionnut.
Ifthisisnotdone,thestitchwillnotremainuniform.

2.PositionofNeedleandLooper(Fig.11)
Looper must pass the concave part of Needle with
clearanceof0.1mmasshowninFig.11.Adjustmentofthe
clearancecanbedoneafterlooseningthescrewofLooper
Rocker.

3.PositionofFeedDog(Fig.12)
Wheninstallinganewfeeddogensurethatitispositioned
correctlyontothefeeddogcarrierblockandlightly
tightenthefixingscrew.Checkthatthefeeddogteethare
2.8mmabovethethroatplatewhenthefeeddogisinthe
highestpositionbeforefinaltighteningofthefixingscrew.

4.PressureofPresserFoot
When to adjust the pressure of Presser Foot, take out
NeedleBarGuardandloosenScrewofPresserBar
Connection. Move up Presser Bar to increase the
pressure and down to decrease. After the adjustment,
tightentheScrewfirmly.

5.PressureFootLifter
ThePresserFootLifterisusedtoliftthePresserFoot
andpulloutabagfromunderthePresserFootincaseofa
problemsuchasbagorthreadjamming.

6.HowtouseHook(PartNo.241151)
TheHookonthePulleyCoverisusedtoinstallaShoulder
BeltoraHanger.
5
Fig.10
Fig.11
Fig.12