Dellorto PHB32 Sven's SST-250 (1976) Add comments Apr 182014 New seals for the carb today. Dellorto PHB 32 Ad Needle K7 middle positon Throttle piston 40/1 main jet 115 main nozzle AB260 low speed jet 55 starting jet 70 float valve seat 250 Leave a Reply Cancel replyYou must be logged in to post a comment.