Thank you guys. And that gap also is listed as set to 11 mm for the ....IX-11. The ...IX are pre-set to 8 mm.
Just purchased a set of 6. Total CAD $56.39 including door to door delivery. It will be a good excuse to re-visit the air-fuel mix adjustment.
Looking forward to see if there is any difference - the bike has been starting and running beautiful as is on the NGK BP6ES (7333) plugs. So I will have 6 good used plus 4 brand new spares. Good for the spare engine - if I will ever fire it up.
1982 Kawasaki KZ1300 A4
1981 Kawasaki KZ1300 A3
assembling engine, chassis & electrical from 79 - 89 parts