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A Slacken the upper clamp on No. 1 cylinder
7.7b Access No. 2 via the hole in the left-hand side of the frame...
hose to the inlet union on the carburettors and detach the hose, being prepared for any residual fuel (see illustration).
6 On J and К models, fully slacken the upper clamps on the cylinder head inlet rubbers, then ease the carburettors off the inlets. noting that they are quite a tight fit, and remove them. Note: Keep the carburettors upright to prevent fuel spillage from the float chambers and the possibility of the piston diaphragms being damaged.
7 On L, N and R models, fully slacken the upper clamps on the cylinder head inlet rubbers on cylinders 1 and 4. and the lower clamps on cylinders 2 and 3. Access the screws on cylinders 2, 3 and 4 using a long screwdriver inserted through the hole in each side of the frame (see illustrations). Ease the carburettors off the inlets, noting that they are quite a tight fit, and remove them (see illustration), Note: Keep the carburettors upright to prevent fuel spillage from the float chambers and the possibility of the piston diaphragms being damaged.
Caution: Stuff clean rag into each cylinder head inlet after removing the carburettors to prevent anything from falling in.
8 Place a suitable container below the float
chambers, then slacken the drain screw on each chamber in turn and drain all the fuel from the carburettors (see illustration). Discard the drain screw O-rings as new ones must be used. Once all the fuel has been drained, fit the new O-rings and tighten the drain screws securely.
9 If necessary, slacken the clamps securing
the inlet rubbers to the cylinder head or
carburettors and remove the rubbers, noting
which way up and round they fit.
Installation
10 Installation is the reverse of removal,
noting the following.
a) Check for cracks or splits in the cylinder head inlet rubbers, and renew them if necessary.
b) If removed, make sure the inlet rubbers are installed with the CARB marking facing out (towards the carburettor), and so that the arrow next to the UP mark points upwards and the slot in the base of the rubber locates over the lug on the inlet manifold. Also make sure the wire bracket on each clamp locates over the lug on the rubber for correct positioning of the clamps.
c) Make sure the carburettors are fully
7.7c... and Nos. 3 and 4 via the hole in the right-hand side
engaged with the inlet rubbers and the clamps are securely tightened.
d) Make sure all hoses are correctly routed and secured and not trapped or kinked.
e) Refer to Section 11 for installation of the throttle cables and section 12 for the choke cable. Check the operation of the cables and adjust them as necessary (see Chapter 1).
f) Check idle speed and carburettor synchronisation and adjust as necessary (see Chapter 1).
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| L, N and Ft models | | | D Carefully lift the carburettors off the inlets 7.8 Carburettor drain screws (arrowed) |