Help Me Identify My Old Norco Bike
Not easy with such an old bike, but i've managed to piece together some useful info.

I believe it is a Norco Monterey:
https://freelanderbicycles.com/blogs/news/17350229-the-restoration-of-brians-norco-monterey

https://www.bikeforums.net/classic-vintage/1061887-early-1980s-norco-id-help.html

Further reading suggests that it was likely designed in Canada, but produced by Yamaguchi Sports in Japan.
With that in mind we can use the info in the following link to make a good guess at interpreting the serial number.

https://www.bikeforums.net/classic-vintage/1042901-asian-serial-number-guide.html

So I think your bike was most likely manufactured during weeks 28-29 of 1979