(d) Unscrew the jet locking nut and detach the nut and jet bearing, withdraw the bearing from the nut (13). (c) Remove the jet adjusting nut and spring (12). Note the gland, washer and ferrule at the end of the jet tube. (b) Unscrew the jettube sleeve nutfrom the float-chamber and withdraw the jet assembly (11). Remove the clip holding the wire link to the jet housing (10b). Support the plastic moulded base of the jet and remove the screw retaining the jet pick-up lever and link bracket (when fitted)(10a). (d) Release the pick-up lever return spring from its retaining lug (9). (c) Remove the piston lifting pin circlip and spring and withdraw the pin from the body (8). For fixed needle HS carburetters, refer to H Type Carbs: Routine Servicing for needle fitment and jet centring. (b) Unscrew the needle guide locking screw, then withdraw the needle, guide and spring (7). (a) Separate the suction chamber, the spring and the piston assembly and empty the oil from the piston rod (6). Lift the piston and remove the bearing retaining circlip (5b).
Ball bearing suction chambers (later type). Hold the piston firmly and pull the suction chamber, taking care not to bend the damper rod, until the bearing retainer is freed from the piston rod (5a). (d) Lift the chamber assembly (4) vertically from the body without tilting it.īall bearing suction chambers (early type). (c) Unscrew the suction chamber retaining screws (3). Remove the piston damper (1) and its washer (2), if fitted.
(a) Thoroughly clean the outside of the carburetters. HS2, HS4 and HS6 Carburetter: Dismantling
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