I have "inherited" an OVERLOCKER. It's an ELNA

Hello Sue.
Unscrew the bulb cover ... On the left side there is a screw holding the cover, unscrew it. Remove the cover and and glove will be readily available to entertain changing. If the manual is not readily available to show this maneuver, here is the service manual showing the same on page 4: ELNA 683 686 Service Manual Bulb Cover
Please give me a 'thumbs up' if this was helpful, otherwise please provide more information to solve this procedure.
Happy Stitching
Sewingirl/

.. Need help with Elna 614 overlocker SEWING IN GENERAL

Instruction Manual Elna 614DE

Elna overlock 614de instruction manual

Overview Elna Serger Overlock Sewing Machine FREE SAMPLE

http://www.serifwebresources.com/phpBB2mt/viewtopic.php?p=27467&forumid=194553

Questions Answers for elna 614de overlocker

Unfortunately, it appears there are no free downloads.

Instruction Manual Elna 614DE

Overview Elna Serger Overlock Sewing Machine FREE SAMPLE

Elna 624DSE 614DE 604E Overlocker instruction manual

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Hello Pieter, here you go :-)
https://www.google.co.uk/url?sa=t&source=web&rct=j&url=http://www.sewingnz.com/elna-624dse-614de-604e-overlocker-instruction-manual/&ved=0ahUKEwiU6NyAi_3MAhXsJsAKHSmoDPsQFggeMAE&usg=AFQjCNHJzqk3oGcNQoz7iEm1CB713dTrCg&sig2=fDJduH1FKZsX9B5UqxN9NQ

Here try this. The repair manuals are only about $21.00. Become your own expert.

the information you need should be in the manual, if you don't have a manual then here is a link for one
http://www.sewingpartsonline.com/instruction-manual-elna-683.aspx

here's a link for a manual
http://www.sewingpartsonline.com/instruction-book-elna-t33.aspx
try changing the needles & see if that helps the machine to form
a proper stitch, if it doens't then it's possible that the machine
could be out of time & needs to be checked at a sewing machine
shop

I can see a needle plate
http://www.sewingpartsonline.com/needle-plate-janome-788601007.aspx

from sewingpartsonline.com, but it is marked as being for Elna 664. They don't have your model listed on their website.

You could email them and ask if its compatible with your model or just look at the part and see if it looks the same to you?

Other option is to contact Elna head Office in your country and ask them for price and availability; often this is best course of action as any sewing machine dealer will probably need to order in the part anyway.
Visit www.elna.com, then go to your country, then "Contact Us" page to find their contact details.

Hope this helps you get the overlocker going again.

90x14 professional needles, we have them $5.00 pk $2.00 shipping....thats our special now

Check out following site very close and helpful.
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_634D_EN_1240.PDF