Chapter 1 Routine maintenance and servicing

1595Ford Fiesta Remake4A•12 Fuel system – carburettor enginesA Anti-dieseling (fuel cutoff)solenoidB Emulsion tubesC Air-correction jetsD Choke pull-downdiaphragm assemblyE Manual choke linkageF Needle valveG FloatH Fast-idle adjusting screwJ Idle speed adjustingscrewK Idle mixture adjustingscrewL Throttle platesM Power valve assemblyN Accelerator pumpassemblyP Throttle kicker (if fitted)Q Upper body gasketR Main jets24.2 Exploded view of the carburettor (Weber TLDM)the seal washer is removed together with thevalve (see illustration).5 Undo the three screws securing the chokemechanism, and detach it (see illustration).6 Unscrew and remove the two air correctionjets from the underside of the upper body.Note the size and location of each, to ensurecorrect refitting.7 Invert the upper body so that the emulsiontubes can fall out of their apertures (above theair correction jets). Remove the emulsiontubes from their locations, again having notedthe size and location of each.8 Unscrew and remove the main jets, againhaving noted their fitted positions.9 Dismantle the carburettor lower (main) bodyas follows.10 Prise free the accelerator pump dischargetube, but take care not to damage it or thecarburettor body (see illustration).11 Undo the four screws securing theaccelerator pump; remove the cover, followedby the diaphragm and return spring (seeillustrations). The valve should come out onthe end of the return spring. Check that thevalve is complete and with its O-ring seal(where applicable).12 Undo the three retaining screws, andremove the power valve unit. Remove thecover and return spring, followed by thediaphragm.13 Where fitted, undo the retaining screwsand remove the throttle kicker unit from thelower (main) body.24.4 Withdrawing the anti-dieseling (fuelcut-off) solenoid24.5 Undo the three screws securing thechoke mechanism (arrowed)24.10 Carefully prising out the acceleratorpump discharge tube assembly24.11a Remove the accelerator pumpcover . . .24.11b . . . followed by its diaphragm . . .24.11c . . . and the return spring and valveassembly