got a nice A/C machine off craigs. $100 and it is in real nice shape. Does anyone have manuals for this machine?

Also, It has 134 written on the recovery bottle. I assume it has 134 in it and has been used for 134. Iwould like to use it for R12. What should I do to clean it out to use it on R12? I would like to finally have AC in the coupe.

thanx

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)