Model 68-31018 15x16 ft tent. where can i get insturctions and parts manual for this tent?

Try the companies official website to see if they have an instruction manual for your tent or try google then too.

Call Mills Fleet Farm, it seems to be a house brand of theirs.
Customer service:

• Call us at 1-877-633-7456

Coleman may be contacted toll-free at 1-800-835-3278. Replacement parts are available from them.

ALL tents need to be seam sealed periodically. It is a good idea to do it with a new tent, but usually not required the first few times out. I also spray the fly with a new DWR coating as tents get older, and have sometimes re-waterproofed them elsewhere.

Go to the website of the manufacturer and look for "manuals" or "support" or "downloads" or something like that. Most have manuals for each tent model.

How to set up swiss gear tent model 36288

I NEED POLES FOR THIS 17 FT X 9FT NORTHWEST TERRITORY PORTLAND DOME TENT SAYS IT SLEEPS 8 PEOPLE AND HEIGHT IS 70" IT SAYS NEXT TO THE UPC BAR CODE IT WAS MADE FOR KMART.
I CALLED KMART THEY SAID SEARS.COM HAS SOME REPLACEMENT KITS THAT WOULD WORK THERE IS LIKE 8 DIFFERENT KITS. COULD SOME ONE TELL ME WHAT KIT WILL WORK WITH THIS TENT. THANK YOU INADVANCE.TIM

Manuals for some of the Coleman tent products can be found here:

http://www.colemancanada.ca/manuals/tents.en.aspx

This may be the manual for your model:

http://www.colemancanada.ca/pdfs/en/2000002058.pdf

If not, perhaps one of these is similar to your model and the available manual will be of some assistance.

Sorry someone has not responded sooner.