CARBURETTERS and jet bearing (38). Withdraw the bearing from the nut, noting, on xed needle carburetters only, the locking washer (39) under the shoulder of the bearing. (15) Note the location points (see inset, 40) of the two ends of ' the pick-up lever return spring (41). Un- screw the lever pivot bolt (42) together with its double-coil spring washer (43), or spacer (44). Detach the lever assembly (9) and return spring. (16) Note the location (see inset, 45) of the tWo ends of the cam lever spring (46) and push out the pivot bolt tube (47) (or tubes), taking care not to lose the spring. Lift Off the cam lever (48), noting the skid washer (49) between the two levers. (12) Relieve the tension of the pick-up lever return spring (29) from the screw and remove screw and brass bush (30) (when tted). (13) Unscrew the brass sleeve nut (31) retaining the exible jet tube (32) to the oatchamber (33) and withdraw the jet assembly (26) from the carburetter body (13). Note the gland (34), washer (35), and ferrule (36) at the end of the jet tube. (14) Bend back the small tag on the restrictor (7) to clear the jet adjusting nut, and remove the jet adjusting nut (l), restrictor (7), and spring (37). Unscrew the jet locking nut (2) and detach the nut AbeSB (17) Slacken and remove the bolt (50) retaining the oat-chamber (33) to the carburetter body. Note the component sequence of the exibly mounted chambers (33) and (51). (18) Mark (52) the location of the oat-chamber lid (53). Unscrew the lid retaining screws (54) and detach the lid and its gasket (55) complete with oat assembly (56). (19) Push out the oat hinge pin (57) from the end opposite its serrations and detach the oat. (20) Extract the oat needle (58) from its seating (59) and unscrew the seating from the lid, using a wrench -338 in. across the ats. Do not distort the seating. (21) Close the throttle and mark (60) the relative posi- tions of the throttle disc (61) and the carburetter ange (62). Do not mark the throttle disc in the vicinity of the limit valve (63). 4.6 422 Engine Emission. Issue 3. 16939