Gear selection and shift mechanism details:
A - "sport" gearbox; B - "economic" gearbox.
1 - gear shift lever handle; 2 — case; 3 - gear shift lever; 4 - protective cover; 5 - soundproofing gasket; 6 — bracket; 7 — gear shift drive rod; 8 — gear shift drive rod joint; 9 — gear selection rod; 10 — rods assembled with gear shift forks; 11 - intermediate thrust; 12 - intermediate lever; 13 - leashes; 14 — gear selector rod lock; 15 — gear shift fork rod locks; 16 - retainer balls; 17 — Reverse light switch; 18 — speedometer drive; AR — reverse.
(Information obtained from this online resource «BMWMAN.ru»)