2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 169Get this manual
PRIMARY AND SECONDARY SHEAVES
REMOVING THE PRIMARY AND SECONDARY SHEAVES 1.Loosen: Nut (secondary sheave) Nut (primary sheave) NOTE: Use the sheave holder to hold the primary sheaveG First, loosen the nut (secondary sheave) 2, then loosen the nut (primary sheave) 1Sheave holder: PNYS-01880-A, 90890-01701