You will need
- - rich cream for hands;
- - rags;
- - kerosene;
- - screwdriver.
Often the cause of breakage of the sewing machine is the accumulation of dirt and rust. For Troubleshooting, you must clean all parts and components of sewing machines.
First remove dirt that collects between the tracks of the rails of feed and needle plate (this is a polished plate, in the hole which includes a needle of the sewing machine). To do this, Unscrew with the screwdriver the screws holding the needle plate and carefully remove it. As a rule, under the needle plate you can detect the downed bundle, consisting of villous tissue: remove this contamination with a brush.
Pull the Shuttle out of the bed, where it rotates, and carefully inspect to detect chipping and other mechanical damage. If mechanical damage is not detected, clear the Shuttle from dust and hardened oil. To easily remove old dirt, use a cloth soaked in kerosene.
Start cleaning the Shuttle nest. First try to remove dirt with a brush; if layering is too compressed, to remove dirt, use a needle or other sharp object.
Clean the reducer, rotating Shuttle mechanism, and bushing (there is friction moving parts), and lubricate with oil all friction parts are easily accessible and bushings. Immediately cloth to wipe smudges of oil.
Check the needle bar mechanism is a metal pin that holds the needle. Make sure that is inserted in the needle bar, the needle meets the demands placed on it: the needle must be sharp and have the type 705 (needle used in household sewing machines).
Verify successful installation of the needle bar. The correct position of the needle bar height is determined by the approach nose of the Shuttle to the needle, when that is far from the nose position. In lockstitch sewing machines the needle bar height is equal to 1-1,5 mm.
Some models of sewing machines, for example, "Jaguar" or the "Pfaff hobby" to find the needle bar is not easy. Disassemble the plastic case, do it very gently because the plastic is brittle. Then adjust the needle bar and glue plastic case.
Check the pressure of the foot, fastened to the stem of leptodirinae. To this end, when stitching thick fabric, lightly press a finger on the horn of the foot: if the gaps disappear, then you need to increase the presser foot pressure, and this can be done by twisting the adjusting screw. Pressure should increase gradually.
Often the old models of "Seagulls" is not activated in the stem weakening the threads. To resolve this problem remove the top cover: left sleeve sewing machine, near the tension Adjuster thread, you will see a hole with a depth screw. Slightly loosen the screw with a screwdriver and pull on itself the regulator of sitenotices 2 mm, and then fasten the screw.
Use only a sharpened screwdriver! If the screwdriver will be old and the wrong size, you will damage the screw head, which it will be very difficult to Unscrew.
To make it easier to wash his hands from the engine oil, before you begin, lubricate them with a fat cream for the hands.