COULD YOU TELL ME HOW i CAN INSTALL THE TAPE PATH ON A MONARCH 1131 PRICE GUN it is driving me up a wall

It is an item with no maker, no support and no spares. You just buy a new one.

Try here though

https://www.pricegun.com/monarch-1110-price-gun/

More

https://www.google.com/search?q=Monarch+1110

https://www.pricegun.com/monarch-1131-price-gun/

price gun should have a diagram on how to reload it, look to find a squeeze release clip on one of the ends or bottom. u will have to remove 5 to 10 stickers so it does not jam.

Here's a video that shows how to properly load supplies into the gun. It's possible that the supplies aren't loaded properly..

http://www.racoindustries.com/monarch-1130-1131-1136-labeler-loading-video.htm

To replace the ink cartridge, turn the latch on the right side of the gun to an upright position. Pull the door out. The ink roller is on the end of the door in a plastic holder. Push the holder apart slightly to remove the old ink roller and insert a new one. Replace the door and turn the latch to hold it in place.

Here's a video on how to properly load gun...

http://www.racoindustries.com/monarch-1130-1131-1136-labeler-loading-video.htm

Monarch label gun replacement parts can be easily found on amazon, click here Amazon com Monarch 1110 label gun parts and take a look. Wish you best of luck.
Martin

Instead of me explaining how to do this, Avery Dennison, the folks that now own Monarch/Paxar, have a site where you can either read a PDF or use one of their videos -

http://www.theretailerscatalog.com/howto.asp

You should be able to locate the service manual at "eserviceinfo.com. It is a free multi part download.

How do you load lable roll into the Monarch paxar 1131?