Honda TRANSALP XL600-650V (1987-2002) [148/291] Fuel and exhaust systems 4 21
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Honda TRANSALP XL600-650V (1987-2002) [148/291] Fuel and exhaust systems 4 21

Honda TRANSALP XL600-650V (1987-2002) [148/291] Fuel and exhaust systems 4 21

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Fuel and exhaust systems 4 21 well maintained in accordance with the manufacturer s schedule if the fuel air mixture is suspected of being incorrect have it checked on an exhaust gas analyser DO NOT use fuel or engine oil additives these may contain substances harmful to the catalytic converter DO NOT continue to use the bike if the engine burns oil to the extent of leaving a visible trail of blue smoke Remember that the catalytic converter is FRAGILE take care not to strike the exhaust system with tools during servicing work 13 8 Fit a new gasket into each head 15 2a Fuel Dump arrowed 15 Fuel pump using new ones but they can be difficult to remove and unless they are damaged they are re usable It is too easy to damage a new one trying to install it to make it worthwhile destroying a good one that is already installed Installation 8 Installation is the reverse of removal noting the following Use a new gasket in each cylinder head port see illustration Replace any damaged deformed or deteriorated mounting rubbers with new ones Use a new sealing ring between each component if required bearing in mind the information in Step 7 above see illustration 13 7b Apply a smear of copper grease to all bolts to prevent them from seizing up Leave all fasteners loose until the entire system has been installed making alignment of the various sections easier Tighten lie silencer mounting last Tighten the downpipe nuts to the torque setting specified at the beginning of the Chapter Run the engine and check the system for leaks 14 Catalytic converter general information XL650V models 1 A catalytic converter is incorporated in the exhaust system to minimise Ihe level of exhaust pollutants released Into the atmosphere It is of the open loop type with no feedback to the ignition or fueling systems 2 The catalyst is automatic in operation and requires no maintenance The following precautions should however be observed DO NOT use leaded or lead replacement petrol gasoline the additives will coat the precious metals reducing their converting efficiency and will eventually destroy the catalytic converter Always keep the ignition and fuel systems 15 2b Fuel cut off relay A fuel warning light circuit checker B XRV750 L to N models check removal and installation XRV750 models A Warning Refer to the precautions given in Section 1 before starting work Check 1 The fuel pump is controlled through a cut off relay so that it runs whenever the ignition is switched ON and the ignition is operative i e only when the engine is turning over As soon as the ignition is killed the relay cuts off the fuel pump s electrical supply so that there is no risk of fuel being sprayed out under pressure in the event of an accident 2 The fuel pump is mounted below the rear of the fuel tank remove the left hand side panel to access it see Chapter 8 see illustration On L to N 1990 to 1992 models the relay is mounted below the instrument cluster remove the fairing to access it see Chapter 8 see illustration On P models onwards 1993 on the relay is mounted on the rear sub frame on the left hand side remove the left hand side panel to access it see Chapter 8 see illustration 3 It should be possible to hear or feel the fuel pump running whenever the engine is turning over either place your ear close beside the pump or feel it with your fingertips If you can t hear or feel anything check the circuit fuse see Chapter 9 If the fuse is good check the pump and relay for loose or corroded connections or physical damage and rectify as necessary If all is good so far perform the following checks 15 2c Fuel cut off relay arrowed XRV750 P models onward

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