Honda AFRICA TWIN XRV750 (1987-2002) [137/291] 10 fuel and exhaust systems

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4 10 Fuel and exhaust systems 7 9a Carburettor drain screw arrowed XL models 7 9b Carburettor drain screw arrowed XRV models 7 11 Make sure the carburettors engage fully in the ducts 9 Place a suitable container below the float chambers then slacken the drain screws and drain all the fuel from the carburettors see illustrations Once all the fuel has been drained tighten the drain screws securely 10 If necessary release the clamps securing the inlet rubbers to the cylinder heads and remove them noting how they fit Installation 11 Installation is the reverse of removal noting the following Check for cracks or splits in the cylinder head inlet rubbers If they have been removed from the cylinder head make sure they are installed with the slotted tab on the adapter aligning with the raised lip on the underside ol the cylinder head stub Make sure the carburettors are fully engaged with the cylinder head inlet rubbers and the clamps are securely tightened see illustration Make sure all hoses are correctly routed and connected and secured and are not trapped or kinked Check the operation of the choke ano throttle cables and adjust them as necessary see Chapter 1 Check idle speed and carburettor synchronisation adjust as necessary see Chapter 1 8 Carburettors disassembly cleaning and inspection A Warning Refer to the precautions given in Section 1 before starting work Disassembly 8 1a Carburettor components XL models and XRV750 L to N 1990 to 1992 models 7 Top cover 2 Spring 3 Piston diaphragm 4 Needle holder 5 Spring 6 Jet needle 7 Float chamber 8 Drain screw 9 Rubber seal 10 Float and float pin 11 Main jet 12 Needle jet 13 Pilot jet 14 Float needle valve 15 Float needle valve seat 16 Pilot screw 17 Air cut off valve cover 18 Spring 19 Diaphragm 20 O ring 1 Remove the carburettors see Section 7 Note Do not separate the carburettors unless absolutely necessary each carburettor can be dismantled sufficiently for all normal cleaning and adjustments while in place on the mounting brackets Dismantle the carburettors separately to avoid interchanging parts see illustrations 2 Unscrew and remove the top cover retaining screws see illustration Lift off the cover and remove the spring from inside the piston