Hi Carlos-Gin, manuals of these stube looking for a long time and found no more than some small Garret tutorial but that was more propaganda than anything else ... the disassembly and assembly of the axis and caps is very simple and the geometry "variable" snail "does not bring more mystery more than clean well and re-assemble the mobile praises as they were going. Now; The biggest problem is the balance of the axis, without a specific balancer for Isso, o reparo durará muito pouco ... o que eu faço é comprar diretamente o cartucho que já é equilibrado e certificado e é bastante econômico, mas isso já é uma coisa de cada um.