That specific brake generation used an adaptor made out of a Wohlcraft "quick draw" style clamp, with a foam jaw/threaded fitting that fit a Shimano bleed cup. They made a mess, no matter how careful you were; your best bet for a clean, trouble-free bleed is to simply remove the reservoir cover, attach a tube/collection bag to the caliper, and allow fluid to flow from the top to the bottom. Don't let the reservoir run dry. Stop when bubbles stop coming out of the caliper, and the fluid has changed color to the clear red of the new stuff.
Since there is no place for air to hide in the open reservoir, there is no real need for the tilting/tapping/occasional fluid pushing of the newer brakes.
4mm inner/6mm outer aquarium tubing suffices for fitting the bleed nipple on the caliper.
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