2.3 ... And the vacuum hose from the in manifold

2.4a Unscrew the bolt at the back of the tank...

2.4B ... And detach the drain and breather hoses

Fuel and exhaust systems 4*3

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2.5a Remove the tank ...

5. Remove the tank (see illustration). Note the position of the two rubber bushes on the front and the rear tank mounting brackets and the two tank mounting rubbers on the frame top tubes (see illustration).

6. Inspect the tank mounting bushes and rubbers for signs of damage or deterioration and renew them if necessary (see illustration).

Installation

7. Check that the tank mounting bushes are fitted, then carefully lower the fuel tank into position.

8. Fit the drain hose and breather hose and install the hose clips (see illustration). Ensure the hoses are secure in their guides on the side of the air filter housing (see illustration).

9. Install the tank rear mounting bolt and washer and tighten it securely (see illustration).

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2.5b ... noting the mounting rubbers (arrowed) on the frame tubes

10. Fit the fuel hose onto its union on the tap and secure it with the clip (see illustration).

11. Fit the vacuum hose to the left-hand inlet manifold and secure it with the clip (see illustration).

12. Turn the fuel tap ON. Start the engine and check that there is no sign of fuel leakage.

13. Install the seat and the frame side panels (see Chapter 8).

Fuel tap

14. The tap should not be removed from the tank unless the filter needs cleaning or the O-ring between the tap and tank is leaking. Remove the tank (see Steps 1 to 5) and refer to Chapter 1, Section 11 for details of these operations.

15. If fuel flow problems are experienced and this is not due to blockage of the filter, the tap diaphragm could be faulty or the vacuum pipe

2.6 Remove and inspect the tank mounting bushes (arrowed)

could be at fault; check that the vacuum pipe at it connection points are air tight before dismantling the tap.

16 To check the operation of the tap diaphragm, remove the fuel tank and move it to the work bench. Connect lengths of hose to the fuel and vacuum outlets on the tap and place the free end of the fuel hose into a suitable container below the level of fuel in the tank. Apply suction to the vacuum hose with the tap lever in the ON and RES positions. Fuel should flow from the fuel pipe in both tap positions if the level of fuel inside the tank is sufficient. If fuel doesn't flow in both positions the diaphragm is faulty and should be renewed. Turn the tap OFF and remove the tap from the tank as described in Chapter 1, Section 11. Remove the four screws to detach the diaphragm from the back of the tap (see illustration).

2.8a Secure the drain and breather hoses to the tank with their clips (arrowed)...

2.8b ... and secure the hoses in the guides (arrowed) on the air filter housing

2.9 Install the tank mounting bolt and tighten it securely

2.10 Fit the fuel hose and secure it with the clip (arrowed)

2.11 Fit the vacuum hose and secure it with the clip (arrowed)

2.16 Remove the four screws to separate the tap and access the diaphragm

4«4 Fuel and exhaust systems

4.1 Pilot screw on No. 1 carburettor (arrowed)

3 Fuel tank -

cleaning and repair

1. All repairs to the fuel tank should be carried out by a professional who has experience in this critical and potentially dangerous work. Even after cleaning and flushing of the fuel system, explosive fumes can remain and ignite during repair of the tank.

2. If the fuel tank is removed from the bike, it should not be placed in an area where sparks or open flames could ignite the fumes coming out of the tank. Be especially careful inside garages where a natural gas-type appliance is located, because the pilot light could cause an explosion.

Air/fuel mixture adjustment - ^>

general information

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