Honda AFRICA TWIN XRV750 (1987-2002) [125/291] 6 cooling system

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3 6 Cooling system Fit a new O ring into the groove in the cover using a dab of grease to keep it in place if required see illustration Tighten the cover and mounting bolts securely Make sure all hoses are pushed fully onto their unions and secured by the clamps Do not forget to connect the temperature sender wiring connector see illustration 4 2a or c Refill the cooling system see Chapter 1 6 Radiators 5 10 Thermostat testing set up minutes and compare the measurement to the Specifications If the readings obtained differ from those given the thermostat is faulty and must be replaced with a new one 11 In the event of thermostat failure as an emergency measure only it can be removed and the machine used without It this is better than leaving a permanently closed thermostat in but if it is permanently open you might as well leave it in Note Take care when starting the engine from cold as it will take much longer than usual to warm up Ensure that a new unit is installed as soon as possible removal and installation Removal 12 Installation is the reverse of removal noting the following Fit the thermostat with the bleed hole orientated as noted on removal and make sure it locates correctly in the groove in the housing see illustration 5 4c Warning The engine must be completely cool before carrying out this procedure Note If the radiators are being removed as part of the engine removal procedure detach the hoses from their unions on the engine rather than on the radiators and remove the radiators with the hoses attached to it Note the routing of the hoses 1 Drain the cooling system see Chapter 1 2 Remove the fuel tank see Chapter 4 On XL650V models remove the trim panel see illustration 4 2b 3 When removing the right hand radiator disconnect the fan wiring connector see illustration 3 3a or b 4 Slacken the clamps securing all the hoses to the radiator and detach them noting which fits where see illustrations 6 4a Detach the hoses arrowed from the right hand radiator 6 4b and the left hand radiator XL600V shown Installation 6 5b and remove the radiator A 6 5c On XRV750 models move the rubber flap aside to access the bolts 5 12 Fit a new O ring onto the cover 5 Support the radiator and unscrew its mounting bolts then remove the radiator noting how it fits see illustrations On XRV750 models you will have to move a small rubber flap aside to access the bolts and if required for example if you are removing the engine release the front stone guard from its mounts and remove it noting how it fits see illustration Note the arrangement of the collars and rubber grommets in the radiator mounts 6 If necessary remove the cooling fan and its switch from the radiator see Section 3 Remove the shroud protective grill from the front of the radiator Check the radiator for signs of damage and clear any dirt or debris that might obstruct air flow and inhibit cooling If the radiator fins are badly damaged or broken the radiator must be replaced with a new one Also check the rubber mounting grommets and renew them if necessary see illustration 6 5a Unscrew the bolts arrowed 6 6 Check the condition of the rubber grommets