ORIGINAL: gkamysz

Nothing more interesting than muffler photos. Loose, what was with my second hand 53. NIP, 60-4C muffler as called for on the 46 and 53 parts list, no pressure fitting.

No being able to richen the idle of an air bleed carb is a sign of too much fuel pressure. At WOT the needle is screwed in to compensate for pressure. At low throttle fuel pressure is reduced, but the carb is designed for no change, so the air bleed needs to be reduced.