Setting Ratings; Gauges - Husqvarna 6690 Manual

Setting ratings

A reasonable requirement in a domestic sewing machine is that it should be able to sew
all types of fabrics used in the home. The settings made when assembling and sewing-in
the machines are those most suited to give the best results in the majority of fabrics and
fabric combinations. In doing so, consideration has been given to the requirements of
different markets. This does, however, mean that when sewing extreme fabrics, better
results may be obtained in certain cases by altering the settings. It must be pointed out
that these altered settings can cause poorer results on more normal fabrics. How the
different standard ratings are set can be seen from the description under each setting
instruction. The following list of setting guides and service tools is chiefly intended as an
indication as to how service men or service workshops should be equipped.

Gauges

1. Service needle. Ordering No. 411 5818-01,
set of 3. When making several adjustments, the
needle is used as a setting guide. However, even
needles of the best quality are manufactured with
tolerances which can affect the setting result.
These are needles which are selected from
ordinary production, so that nominal values are
obtained with great accuracy. The service needle
is size 90 and when setting in the feeding direction,
the needle should be set in the middle of the needle
hole. Compare page 17. The service needles are
delivered in sets of 3, packed in glass tubes.
2. Setting needle. Ordering No. 411 5800-01. For
checking the maximum gap between the needle
and hook, according to page 19.
3. Gauge for the hook. Ordering No. 411 1752-01.
Setting the loop forming distance. To be used
according to instructions on page 20.
4. Gauge for gap between the hook cover and
driver. Ordering No. 411 1649-01. To be used
according to instructions on page 21. Gives the
same rating as setting guide 411 1635-01, which
has been discontinued.
5. Gauge for presser bar. Ordering
No. 411 5151-01. To be used according to
instructions on page 26.
6. Gauge for feed lift. Ordering No. 411 1735-01.
To be used according to instructions on page 24.
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