c1731006c4 also for: b25 series. You can find original shop manuals for the Starfires fairly easy and cheap also . I guess it would be easier to make the same parts for the triumph tr25w and bsa b25. 1949-1955 BSA M20-M21-M33 Series Instruction Manual M20-M21-M33 (1949) 1949-53 BSA 350-500 Spares List B31, . Over 40,000 repair & owner manuals . Manuals for all BSA models. BSA MOTORCYCLE 250 SERIES B25 & C25 SPARE PARTS MANUAL From Frame . BSA C15 B40 Instruction Manual: BSA: Make, . pdf Bsa c25 parts manual, .