Honda TRANSALP XL600-650V (1987-2002) [42/291] Every 8000 miles 12 000 km

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Every 8000 miles 12 000 km 1 21 17 6 Front cylinder vacuum take off point XL650V models 17 8 Connect the gauge hoses to the vacuum take off points 8 Connect the gauge hoses to the vacuum take off points see illustration Make sure they are a good fit because any air leaks will result in false readings 9 Arrange a temporary fuel supply either by using a small temporary tank a two stroke motorcycle oil tank works very well as it has an outlet union on its base to which a link hose can be attached Similarly an old oil container with a nozzle type cap can be used see illustration or by using extra long pipes to the now remote fuel tank making sure on XL models the tank is sitting higher than the carburettors or the fuel will not flow XRV models have a fuel pump On XRV750 P models onward 1993 on the tank can be set in its normal place on the bike as the carburettor synchronisation screw is accessed from below the carburettors on all other models this is not possible as the screw is accessed via a hole in the top of the air duct On all XRV750 models make sure that any auxiliary lank or hose is connected into the hose that normally attaches to the fuel tap so that the filter and pump are included in the supply system 10 Start the engine If using vacuum gauges fitted with damping adjustment set this so that the needle flutter is just eliminated but so that they can still respond to small changes in pressure 11 The vacuum readings for the cylinders should be the same or at least within the maximum difference specified at the beginning of the Chapter If the vacuum readings vary adjust the carburettors by turning the synchronising screw situated in the throttle linkage between the carburettors until the readings are the same On XRV750 P models onward 1993 on the screw is accessed from below the carburettors on all other models it is accessed using a long screwdriver inserted through the hole in the top of the air duct see illustration Note Do not press hard on the screw whilst adjusting it otherwise a false reading will be obtained 12 When the carburettors are synchronised open and close the throttle quickly to settle the linkage and recheck the gauge readings readjusting if necessary 13 When the adjustment is complete recheck the vacuum readings then adjust the idle speed by turning the throttle stop screw see Section 2 until the idle speed listed in this Chapter s Specifications is obtained Stop the engine 14 Remove the vacuum gauges and the hose adapters then replace the blanking screw s and or attach the vacuum hose s to the take off points as required by your model see Step 5 6 or 7 Install the fuel tank see Chapter 4 17 9 One way of setting up an auxiliary fuel supply 18 Cooling system check A Warning The engine must be cool before beginning this procedure 1 Check the coolant level see Daily pre nde checks 2 On XL600V and XRV750 models remove the fairing side panels and on XL650V models remove the fairing see Chapter 8 On all models remove the belly pan see Chapter 8 3 Check the entire cooling system for evidence of leakage Examine each rubber coolant hose along its entire length Look for cracks abrasions and other damage Squeeze each hose at various points to see whether they are dried out or hard They should feel firm yet pliable and return to their original shape when released If necessary replace them with new ones see Chapter 3 4 Check for evidence of leaks at each cooling system joint and around the pump on the left hand side of the engine Tighten the hose clips carefully to prevent future leaks If the pump cover is leaking check that the cover bolts are tight If they are replace the O ring in the cover with a new one see Chapter 3 5 To prevent leakage of coolant from the cooling system to the lubrication system and vice versa two seals are fitted on the pump shaft On the bottom of the pump housing there is a drain hole see illustration If either seal fails the drain allows the coolant or oil to escape and prevents them mixing If both seals fall the oil and coolant mix to form a white emulsion The seal on the water pump side is of the mechanical type which bears on the rear face of the impeller The second seal which is mounted behind the mechanical seal 17 11 Adjusting carburettor synchronisation Note how on XL models the adjustment screw is accessed via the hole in the air duct or filter housing is of the normal feathered lip type The oil seal is available separately while the mechanical seal comes installed in the pump and is not available on its own If on inspection the drain shows signs of oil leakage remove the pump and replace the oil seal with a new one If the dram shows signs of coolant leakage or a coolant oil mixture in the form of a white emulsion remove the pump and replace it with a new one Refer to Chapter 3 for details 6 Check the radiator for leaks and other damage Leaks in the radiator leave tell tale scale deposits or coolant stains on the outside of the core below the leak If leaks are noted remove the radiator see Chapter 3 and have it repaired or replace it with a new one Caution Do not use a liquid leak stopping compound to try to repair leaks 18 5 Check the pump drain hole arrowed for signs of leakage