CPI - Motorcycle Manuals PDF, Wiring Diagrams & Fault Codes Some CPI Motorcycle Manuals, Wiring Diagrams, Parts PDF are above the page. The main specialization of CPI Motors , a division of Chumedy Power Industrial Co., Ltd . - manufacture of motorcycle engines. SOLVED: Cpi sm 50 wiring diagram - Fixya wwwa›Forum›Motorcycles›CpiWiring diagram cpi Hi, Giovannebrit sorry you can't find the first and best tool you ever bought for your CPI despair not for a mere $0 you can download another one. For more information about your issue and free downloads that you will need please visit the websites below.