Teac V-615 and others belt kit these have the same inner

these have the same inner circle inside the wheel (bet you didn't know that was there) this was a pain to get it cut but I am guessing its used to hold oil and/or trap particles of metal dirt etc So added it

They have a brown or white Molex plug on which change the motors Direction one wire is slightly longer

Complete board from the MM-20

Odd thing is have a B-16 that does not have a hande so seems there are at least two variants of the B-16

Small switch board from a Tascam 112 cassette recorder and maybe used in some other models

Teac V-615 and others belt kit these have the same innerSimple belts used on the 615 and others in this series, I will add them as i see them