Join Date: Jul 2005
Location: Clinton, Tennessee, USA
Model: '06 GL1800, '78 GL1000 with '75 motor
1000 air jets (2) are under the vacuum piston and a kidney-shaped cover. Next to impossible to do on bike, but pulling GL1000 rack isn't all that hard.
Slow air jet is in an elbow on the side with rubber tube from plenum. Post-'77 supposed to be pressed in, but the '79 set I just took apart for spares had it screwed in.
You can get to the air cutoff valve after removing the filter box.
BTW, over-dose on Seafoam all you want. I know that it is not fun to drain everything to get it out once you've over-done it. Like I had to do on my neighbor's VTX1300 where he put a whole can in about 2 gallons. Once the tank and carb was drained and fresh 100% gas put in, it was fine (well, after running what was in the lines out). Seafoam is great stuff, just let me be on record saying that you should only use it at their recommended concentration.
"Love 'em all... Let God sort 'em out!"
'52 wife - '69 daughter - '83 daughter
ex '86 SE-i
ex '77 GL1000