2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 476Get this manual
AUTOMATIC TRANSMISSION SYSTEM 3W it hin seco nds afte turn ing th ign it ion switc to "ON", pus and release th ge arshift switch es in th order UP sw it ch, DOWN sw itc an UP sw itc h(Do not ho ld onto th sw itc h
UP SW ITCH
DOW SW ITCH
The gear pos ition indicat isp lay "-" to indica te the syste enters th initia settin odeIf more th an secon ds el apse th procedu res are inco rrectthe "Nstops blin king an st ay nRep eat he rocedu res from st ep 1