[rayworx]

I prefer the contact cleaner sold by Radio Shack or other electronic shops for computer keyboards. There are thin plastic pieces inside the switches that can melt if the contact cleaner is TOO strong. It's a good idea to have some compressed air handy…. the cans of air work good.

If I recall…. the hose was not supplied with the bike. I think it was available as an additional purchase.
Try this ebay link…..

http://www.ebay.com/itm/HONDA-GL180...Parts_Accessories&hash=item5d3614ce4b&vxp=mtr

 

[rayworx]

The air hose was supplied as standard equipment on the Aspencade and Ltd editions.

I stand corrected…. but it's been lost over the years. I'm guessing that's not so uncommon.