500B, 510B, 511B, 530, 535, 540, 541, 570, 600B, 610B, 611B 614B, 630, 634, 640, 641, 642, 644. Throttle shaft and choke shaft must be disassembled and remounted on the opposite side. 65, 135, 150, 165. 660 (SN: 73132 and up), Super 99, 550 (SN: 72832 and up), 950. TSX1000, TSX245, TSX389, TSX475, TSX477, TSX530, TSX562, TSX581, TSX615, TSX641, TSX678, TSX688, TSX689, TSX695, TSX704, TSX711, TSX737, TSX738, TSX756, TSX768, TSX772, TSX775, TSX777, TSX784, TSX788, TSX791, TSX798, TSX799, TSX800, TSX806, TSX808, TSX810, TSX819, TSX843, TSX849, TSX854, TSX856, TSX857, TSX877, TSX878, TSX881, TSX885, TSX886, TSX888, TSX894, TSX895, TSX898, TSX899, TSX904SL, TSX905, TSX905-1, TSX905SL, TSX906, TSX907, TSX907SL, TSX908, TSX908SL, TSX920, TSX920SL, TSX921, TSX921SL, TSX922, TSX923, TSX923SL, TSX925, TSX925SL, TSX927, TSX933, TSX934, TSX934SL, TSX938, MTSX938SL, TSX940, TSX940SL, TSX941, TSX941SL, TSX942, TSX943, TSX945, TSX945SL, TSX946, TSX947, TSX947SL, TSX955, TSX959, TSX959SL, TSX961, TSX961SL, TSX962, TSX962SL, TSX964. TSX964SL, TSX965, TSX965SL, TSX967, TSX968, TSX974. TSX975, TSX984, TSX984SL, TSX985, TSX985SL, TSX992. 11622, 11894, 11894A, 11895, 11895A, 11895B, 11899, 11899A, 11949, 11973, 11973A, 11973B, 12032, 12032A, 12032B, 12032C, 12255, 12293, 12293A, 12293B, 12380, 12420, 12420A, 12425, 12427, 12490, 12490A, 12491, 12491A, 12498, 12501, 12509, 12534, 12534A, 12542, 12548, 12592, 12617, 12625, 12758, 12758A, 12770, 12770A, 12822, 12851, 12913, 12994, 13037, 13048, 13087, 13106, 13107, 13108, 13109, 13116, 13117, 13118, 13119, 13152, 13157, 13164, 13165, 13202, 13226, 13326, 13328, 13338, 13348, 13384, 13406, 13461, 13465, 13612, 13783, 13808, 13831, 13844, 13919, 13939, 13980, 13981, 14045, 14992, 14996, 14996A. 2-11/16 center-to-center mounting studs. 1.299 throttle bore. 2.040 housing outside diameter for air cleaner hose. Some applications may require the throttle or choke to. Be disassembled and remounted on the opposite side. Mounting studs may also need to be shortened.