I seem to have lost the manual for my Ikea STEFAN dining room chair. Does anyone know where I can get a copy?

I don't think anyone sells them. If you've got a 3D printer, you can download a pattern to make a new one. If not you can improvise. Here are a couple of ideas.

Peter Judge Fixing an Ikea Ingolf chair

I think this is the one you are looking for. If not, simply go to the Ikea website, find your product and there should be a link for the assembly instructions. Good luck!

http://www.ikea.com/assembly_instructions/ikea-ps-2012-table__AA-546692-4_pub.PDF

I have gotten you a copy from their website. Here is the link -

http://www.ikea.com/assembly_instructions/bjursta-dining-table-175-218-260x95-cm__AA-228245-10_pub.PDF

The Ikea website has copies of assembly instructions for all of their products. I have copied the link to the manual for your requested product here for you.

http://www.ikea.com/assembly_instructions/vreta-recliner__AA-167545-3_pub.PDF

Yes. These chairs are made from aluminum and are therefore permitted to be used outdoors.

I recommend looking at the Ikea website. They have a few to choose from at a good price. They are not too difficult to assemble either.

http://www.ikea.com/us/en/catalog/categories/departments/dining/19140/

Here is a copy of the assembly manual from the Ikea website.

http://www.ikea.com/assembly_instructions/bernhard-chair__AA-364079-4_pub.PDF

The cover for this chair comes in a wide variety of colors such as white, lilac, sand and striped light brown.

The product dimensions are as follows: width - 48cm, depth - 49cm, and height - 79cm.

The Ikea website offers washing and care instructions for this specific product. The instructions are as follows: machine wash in hot water (140F), do not bleach, do not tumble dry, iron at high temperature.