SINGER 99-13 - Manual (Page 14)

2(5 27
Huviiig set Uic liulibiii ca.se into the correct
position, lock tlie lat(-h (XN, Fi^^ -Jo) in tho notch
(00, i'ig. 25) to hold the boLiljin case in place.
Fio. 26. Iii3PL.\ciN« TUB Sua-o
Thou replace the slide from the right, iis shown
in Fig. 2li, being careful to see that tho two cmls
of tho spring ( K li. Fig. 2(5) enter the grooves on the
uinUaside of the slide.
HINTS
Machine Working Heavily. If tho nuichine
runs hard after standing itilo for some time use a
little kerosene in the oiling places, run the machine
rapidlj', then wipe clean anil oil.
To Avoid Breaking Needles. See that tho
pressor foot or attachments are .seimroly fastened by
tho llunnb screw. Do not sew heavy seams or very
thick goods with loo lino a needle. A large needle
and thread lo corresponil .should be lused on heavy
work (.SCO Jingo 18).
See that (he needle is not bent and avoid jmlling
tho material when stitching.
Breaking of Needle Thread. If tho niasllo
thread breaks it may be caused by:
Improjier threading.
'I'ension being too tight.
Needle too lino for size of l.hroail.
I'he thread being too coarse for size of needle.
The needle being bent, having a blunt jioint,
or being .set incorrectly.
Breaking of Bobbin Thread. If the bobbin
thread bi’caks it may be caused by:
Improper threading of bobbin ease.
Tension being too tight.
Skipping of Stitches. 'I'ho needle may not be
..ecurately sot into tho ne.edle bar or tho needle may
■'unt or bent. 'I'lie needle may be too small for
•ead being used.