The "84 models were 1200"s. The 1100's stopped in '83. On the'83, the choke is on the left side, should be a pull up small round button. On the '84, choke is on left side beside the flasher.
go to: www.goldwingdocs.com
No
remove battery cable remove gear change lever remove two bolts thru starter then work it out .' that's it
Should be just beside the battery.
Iraqi the front of the engine at the bottom
Water cooled.
This bike takes about 3.7 quarts.
Honda 10w40 works well
'79 is a 1000 cc , '80 is a 1100 cc. You would have to compare the both. Or check with the parts dealer.
Is it a screw in choke?
Follow the lower rad. hose. Its in there. Have to remove the rad.
10w40 will do just fine. I use Motul.