Chapter 1 Routine maintenance and servicing

1595Ford Fiesta Remake4A•8 Fuel system – carburettor enginesbody, then measure the distance between thegasket and the step on the float.17 If the measurement is not as specified,adjust by bending the tag on the float, then recheck.18 Refitting should be carried out inaccordance with paragraphs 11 to 14inclusive.15 Carburettor (Weber TLM) -removal and refitting4Note: Refer to the warning note in Section 1before proceeding. New gaskets will berequired when reassembling. A tachometerand an exhaust gas analyser (CO meter) willalso be required to check the idle speed andmixture settings on completion.Removal1 Disconnect the battery negative (earth) lead(refer to Chapter 5A, Section 1).2 Remove the air cleaner as described inSection 2.3 Disconnect the accelerator inner and outercable from the carburettor (Section 3).4 Disconnect the choke inner and outer cablefrom the carburettor (Section 6).5 Disconnect the fuel feed hose from thecarburettor, and plug its end to avoid spillageand prevent dirt ingress. If a crimped typehose clip is fitted, cut this free taking care toavoid damage to the hose.6 Where applicable, disconnect the electricallead from the anti-dieseling (fuel cut-off)solenoid, and all relevant carburettor vacuumpipes (having labelled them for correctsubsequent refitting).7 Remove the two Torx head screws securingthe carburettor to the inlet manifold, thenwithdraw it from the vehicle (see illustration).Refitting8 Clean the inlet manifold and carburettorgasket mating faces.9 Refit in the reverse order of removal. Fit anew gasket, and tighten the retaining screwssecurely. Ensure that the fuel supply hoseconnection to the carburettor is securelyfitted, using a new screw type retaining clip.10 Reconnect the accelerator cable, andadjust it as described in Section 3.11 Reconnect the choke cable, and adjust itas described in Section 6.12 Refer to Section 2 and refit the air cleaner.13 When the battery is reconnected, startand warm up the engine then check the idlespeed and mixture settings as described inChapter 1.16 Accelerator pump diaphragm(Weber TLM carburettor) -4removal and refittingNote: Refer to the warning note in Section 1before proceeding.Removal1 Remove the carburettor as described inSection 15 and place it on a clean flat worksurface.2 Remove the accelerator pump coverretaining screws and detach the cover.3 Withdraw the diaphragm and spring. Checkthe diaphragm for damage, and renew ifevident.Refitting4 Clean the carburettor and cover matingfaces.A Upper bodyB Choke mechanismC Accelerator pumpassemblyD Accelerator pumpdischarge tubeE Fast-idle speedadjusting screwF Throttle housingG Idle speed adjustingscrewH Anti-dieseling (fuelcut-off) solenoidJ Power valve assemblyK FloatLIdle mixture adjustingscrew5 Refit the spring and diaphragm to thecarburettor, aligning the diaphragm with itscover retaining screw holes. Position theactuating lever on its cam, then carefullypress the cover against the diaphragm andsecure with its retaining screws.6 Refit the carburettor as described inSection 15.17 Carburettor (Weber TLM) -dismantling, cleaning,inspection and reassembly4Note: Refer to the warning note in Section 1before proceeding. Check parts availabilitybefore dismantling. If possible, obtainan overhaul kit containing all the relevantgaskets, seals, etc, required for reassemblyprior to dismantling the carburettor.Dismantling1 Remove the carburettor as described inSection 15 and place it on a clean flat worksurface.2 Clean the exterior of the carburettor, thenundo the two retaining screws and lift off theupper carburettor body (see illustration).3 Remove the float and needle valve from thecarburettor upper body, as described inSection 14.4 Remove the accelerator pump components15.7 Removing one of the two Torx headscrews (arrowed) securing the carburettorto the inlet manifold (Weber TLMcarburettor)17.2 Exploded view of the carburettor (Weber TLM)