Singer 270 - Singer Service Manual Thread Tension

THREAD TENSION
Nocd le Thr ea d Ten s ion
T ens ion sh ould be as li ght os possib le while
stil l su fficient to se t t he s tit ch co rr ectly in mate rial,
{s ee Fig. 9) .
To regulate, tu rn thumb nu t at fro nt o f ten s io n
discs as shown in Fi g. 1 0.
Fig. 9. EVER.LOK Stitch
Ree l Thread Tension
Whe n t ens ion on ree l thread h as been correctly
odj us te d, the required st it ch moy usuol ly be ob·
to ined to sui t the work in process therea fter by
varying noedle thread tension only.
To regulate, turn adjusting scre w shown in Fig .
10 os required ,
INCRE ASE
fig . 10. Adjusting the Tension
SEWING DIFFICULTIES
WHEN THREAD BREAKS
CHECK:
Is mach ne threaded prope rly ?
Is needle c:o rr od ly seated in needle bar?
Is needle be nt or burred?
Is th read su it ab le for n eedle in use?
Is nood le thread tens ion too tight?
WHEN THREAD SNAGS OR MACHINE SKIPS ST IT CHES
CHECK:
Is nee dle e ye or gr oove dirty?
Is n ee dle b ent or burred?
Is n eed le size cor r ect fo r operat i on?
Is thrcod suit a ble for material in use?
Is reel case fr ee of thread end?
HINTS FOR OPERATORS
WHEN OPERA TI NG MACHI NE
Be $ure to depress start ing pe dal firmly.
Mak~ s ure t ha t b utton is i nserte d co rr ec tly in clornp.
Make sure thot need le t hread is not u nd er c lamp at start of sewin g cycle.
Do not depress clo mp lifting pedal unt il machine goes in "stop'*.
I nspect reel thr ead t ension for t hr ead or I int accumulation .
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