Long shot...Siruba machines?

[Sugarkryptonite]

Another question I had about a Siruba overlocker, 2 needle 5 thread, safety stitch machine. Can these machines produce the "normal" 4 thread overlocker stitch that most of us use from day to day? Or are they only capable of producing that 5 thread safety stitch? There is a machine for sale insanely cheap (like giving away cheap), but I don't want that 5 thread stitch, just the normal 4 thread.

Model is Siruba 757 516L1-35. I can't find the manual online anywhere for it, unfortunately.

 

EDIT: It seems from this manual for a similar (although I think newer model), they have different model numbers for different machines, which leads me to believe this machine cannot do a 4 thread stitch.

Edited April 28, 2019 by Sugarkryptonite

[trash treasure]

I believe you're correct - That machine will do a 5 thread safety stitch or a 3 thread (by pulling one needle), but it wont do a 4 thread stitch.

[CowboyBob]

Some brands  have a looper you can buy that eliminates the one thread to convert it to a 4-spool.

There's one on ebay,I tried to cut & paste it but it won't work,it's called a spreader $15.00 

 

Edited April 28, 2019 by CowboyBob

[Sugarkryptonite]

1 hour ago, CowboyBob said:

Some brands  have a looper you can buy that eliminates the one thread to convert it to a 4-spool.

There's one on ebay,I tried to cut & paste it but it won't work,it's called a spreader $15.00 

Interesting so it replaces one of the loopers? Or is it just to make a 2 thread stitch?

Also, can anyone confirm if the "L1" designation means it has no differential feed?

Edited April 28, 2019 by Sugarkryptonite

[CowboyBob]

A 5-spool uses 3-spools on the over edge with the right needle & 2 spools with the left needle ,the looper goes on the right overcast looper,the one that goes over the top & will turn your machine intp a 4-spool w/a a true safety stitch.

[Sugarkryptonite]

On 4/28/2019 at 3:19 PM, CowboyBob said:

A 5-spool uses 3-spools on the over edge with the right needle & 2 spools with the left needle ,the looper goes on the right overcast looper,the one that goes over the top & will turn your machine intp a 4-spool w/a a true safety stitch.

Very interesting, thanks Bob.

I guess I should update this thread. I ended up contacting the guy who was selling the coverstitch machine again after he said it was reserved for someone else; long story short, I ended up picking up the machine yesterday. Price was $420. Looks to be in very good shape, other than being low on oil in the reservoir, seems it had leaked out on the table at some point (machine hasn't been used in many years, but still turns very well), there's still oil in the reservoir, as can be heard when shaking the machine around, and if you run the machine, can still see it coming out the top in the viewing port.

1) In the manual it says to use "Mobil #10 or ESSO #32 or its equivalent pil". Anything normal that I can use? Will regular sewing machine oil work? Or is this a special type of oil? It also seems to have an oil filter on the side of the machine, which I will try to get from somewhere...

2) Any tips for cleaning out all the old lint in the machine? I've never had a machine that was this dirty, so not sure what to do.

3) Lastly, this machine has the ability (I believe) to do a coverstitch on the top and bottom at the same time, it came with this little arm that was not being used by the previous owner. It seems to attach to another rod at the back of the needles that turns slightly back and forth when the machine is running. Do any of you know how to time that part of the machine? There's nothing in the manual about it.

Edited May 2, 2019 by Sugarkryptonite

[dikman]

There's a lot of lint there!! You could probably start with a pair of tweezers and pull out as much as you can, then a fine brush and a vacuum to finish off.

[CowboyBob]

I would spray something like WD40 on it & blow it off with air if you have an air  compressor.That arm is for the upper thread to make it cover the stitch on top,it really isn't that hard to install,put it on & you'll see it needs to go in front of the needles,all the way to the left so the thread from it goes behind all the needles.

Any clear sewing machine oil will work.

Edited May 2, 2019 by CowboyBob

[trash treasure]

Bob is right - That arm is called the spreader, and it mounts where your circle is, and travels back and forth to "spread" the upper thread across the stitch. You do know, that on these machines, the handwheel rotation is CLOCKWISE - REVERSE, like a serger, right ?

Now keep in mind, I have a Kansai, but it's a similar machine, making a similar stitch - On the Kansai, the spreader is adjusted so the right, inner  point clears the LEFT needle by about 0.5 - 0.8mm, as it travels past from right to left on the needle downstroke.

At the end of it's leftward travel, the same inner point should wind up 4.5 - 5.5mm to the left of the left needle, just before it reverses travel.

I keep editing this, as I remember stuff - You have to make sure the spreader clears the thread guides - For the guide with the curved hole - At it's RIGHT travel end, the point should be approx. centered under the curved slot - So adjust the guide accordingly. For the upper, small moving guide, at the end of it's downstroke, make sure it clears the lower guide by about 1mm and is centered, or a little bit to the left of the center of the slot on the lower one. WHEW !

I've done these adjustments, and it's really not hard to do, if you have good eyes (or magnifying glasses, like I do), and some metric Allen wrenches (I see yours are just regular screws), so if you can't find more specifics for your Siruba, this will probably get you in the ballpark, hopefully.    But I'd really urge you to try and get an adjuster's manual for that series, if at all possible - It'll save you a lot of grief :~)

The actual TIMING of the spreader is done internally, and is supposed to be adjusted depending on the thread used.  But I don't have a Siruba, and I'll not pretend to tell you about adjusting that!

These machines, being self-oilers, are unfortunately going to be oily, especially as they are used and a little worn - There MAY be an adjustment for the oil feed, but I don't know on your machine - You'll just have to keep ahead of the lint, by blowing it out with compressed air - It could get messy!    Just use "Lilly White" type sewing machine oil - Buy a gallon!

Good Luck!

Edited May 2, 2019 by trash treasure

[fredk]

I'd not use WD40 on this as WD40 leaves a residue which lint just loves to stick to. Nor would I use any of the motor oils. You can get superthin sewing machine oil, but I use good ole 3-in-1 oil

To clean this I would wash and rinse it down using paraffin oil. That will wash off the old oil and take away the stuck on lint. use a 1" stiff paint brush to help. Then re-oil using s/m oil or 3-in-1