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PETR OL FUEL SYSTEM .. . .... . 19. Mark-up for reassembly purposes and remove the , , .. . . ... choke butterfly followed by the choke spindle and 20. Prior to removal, mark each throttle butterfly. 21. Remove the throttle linkage, springs and washers, noting their sequential positions to aid rcassembly. 22. If required remove the primary and sccondary throttle butterflies (after marking-up) followed by Inspection and cleaning 23. When cleaning fuel passages, DO NOT use metal tools which could cause dimensional changes in the drillings or jets. Cleaning should be effected using clean fuel, and, where necessary, a moisture free 24. If the joint faces on the emulsion block, top or carburetter body show any signs of distortion or using fine grade abrasive cloth and a surface plate. Examine the faces for deep 25. New and seals should be used throughout the carburetter rebuild. A complete set of gaskets is available for replacement purposes. 26. Examine the throttle spindle bushes for wcar, if oval or badly worn, replace the carburetter body. 27. the idle mixture volume screw for wear or damage, replace as required. . . 35. Fit the pump jet with a new '0' ring into the carburetter body. 36. Reassemble the primary jet to the jet holder and fit to the carburetter body. 37. Fit the secondary main and air correction to the secondary emulsion tube, locate and secure 38. Assemble the secondary jet to the jet holder and fit assembly to the carburetter body. 39. Reassemble the primary main and air correction jets to t h e emulsion tube; and fit assembly to 40. Fit the fuel filter and filter plug to the top cover. Fit the needle valve seating and washer. 42. Place a new gasket into position. Fit the needle valve into t h e needle valve seating. 44. Position the float tag in the needle valve wire loop. Align the float carrier with the pin holes and float carrier flange lugs. the float carrier with the hinge pin. 45. With the needle valve on its seating and the float carrier tag resting against the valve (ensuring that neither the valve plunger n o r the valve ball are depressed) the distance between the casing and front of the float. 46. The dimension required is 7 in). Any adjustment must be made by bending float carrier tag. Adjustments must be made by bending float carrier arms. continued Reassembly . . 28. If previously insert the primary and sccondary throttle spindles into their respective positions. 29. Locate the primary and secondary throttle butterflies on to their respective spindles and to centralise it on each spindle and secure the screws and lock them by peening. 30. Refit the throttle spindle assembly to carburetter ensuring the pin on the free lever in the slot on t h e primary shaft plate, ensuring that the first spring is located on the spacer, whilst the second spring is engaged on the free lever. 31. Fit the accelerator pump assembly comprising spring, gasket, diaphragm, spring and pump cover. 32. Refit t h e economy pump assembly comprising diaphragm, spring and pump cover. 33. Replace the fuel cut-off valve and solenoid. Fit the idle mixture control screw and carefully turn until fully home, then turn the screw 1 to 2 turns in the reverse direction to serve as an initial setting. . ... , |