Hi. You have to put a sleeve on the capstan.This sleeve is next to the heads cover.Then you screw this sleeve with a round nut that is the same diameter.This nut hold the sleeve when you use the 3.75 ips.Hope this will help.
Help needed for Reel to Reel tape deck
Recently after 14 years, I've taken out my Akai GX-4000D reel tape deck to play some old reel tapes and I am having trouble remembering how to change speeds to 7 1/2 IPS. There's a thingamabob that I do remember being concealed near the heads, which I have, but doesn't seem to help. Of course, I do have the owner's manual, but have turned the house upside down trying to find it with absolutely no luck. Frustrated, I checked the Alta Vista search engine typing Akai GX-4000D and found this site, but no posts to the old question asked remain. Any help would be greatly appreciate and I can be emailed at: KCFAN317@aol.com. Thank you! R.G.
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