4. Start off by thread locking the 12 x M8 studs into the inlet manifold. Hang on the three double “O”
ring seals. You can also fit the thermostat and housing using sealing compound on both sides of the
gasket before fitting.
5. Next prepare the Weber for fitting. Remove the silver single holed lever (you will need to gently
flatten the lock washer enough to remove the nut and to be able to reuse these washers). In its place
fit on the multi position lever with idle screw stop plate. Set this lever pointing upwards and
45degrees away from engine. Refit nut and lock with tab washer. These levers need to be on the rear
of all three carburettors. If not the front and rear fixings are interchangeable.
6. You will also need to fit the fuel inlet pipes. The front carburettor needs an elbow pointing
backwards. The other two carburettors need “T” piece pipes (all parts should be with carburettors).
7. Once this is done you can mount the three carburettors on the inlet manifold using one rubber “O”
ring between two cup washers followed by a Nyloc nut. Tighten until the cup washers hide the
rubber “O” ring and the carburettors look straight and even. Do not over-tighten as there is supposed
to be a gap between the carburettors and the inlet manifold with the double “O” ring plate floating in
between.
8. Next take the rose jointed eyes and screw them in the top of the inlet manifold (near the rear screw
of each carburettor). Trial fit the lever bar to check and adjust the levels before tightening the lock
nuts. Check that lever bar turns smoothly and freely. Remove the lever bar and slide on the first gold
colour lever followed by the first locking bush. Slide the bar through from the rear carburettor
before adding the next lever at the same angle as the first. Slide through the next eye before adding
the final lever also at the same angle. Finally slide through the last eye before sliding on the second
locking bush. You can now use the locking bushes to secure the lever bar in place with the majority
of the extra overhanging the rear carburettor.
9. Next take the three adjustable ball joint bars and set them to the same length (about halfway through
their adjustment). To ease future adjustment when fitted one end is left hand thread allowing
adjustment without removal and it is sensible to fit these all the same way up to save confusion later.
Once set equal, connect these between the carburettor levers and the levers on the bar above using
the outermost holes. The rear carburettor also needs the quadrant fitted at the same time using the
ball joint to secure one hole using a bolt to secure the lower position; this quadrant adds a hole
directly below the ball joint which will connect up to the throttle lever later. Once all the carburettors
are linked lock the top levers in line with the carburettors to stop them from sliding making sure they
do not foul anywhere. The final ball jointed bar has a swan neck on top and this connects from the
quadrant to the throttle pedal pivot.
10. To finish off the carburettors they need the return mechanism fitted. This consists of a short silver
lever, which slides on the rear end of the lever bar pointing 90degrees back from the carburettor
levers and in line with the rear inlet manifold mounting. Position and then fit the return spring eye to
the upper rear manifold stud. The two can then be connected together with the supplied spring. Any
extra length of lever bar from the rear carburettor can now be shortened accordingly.
11. The carburettors are now ready to be fitted to the engine. Hang the inlet manifold gasket over the
studs on the head before offering up the inlet manifold and carburettors (there is no need for sealant
here) and secure with 18 of 5/16”UNF Nylocs or plain nuts with lock washers. The throttle linkage
adjustable bar can then be installed between the pedal and the carburettors and adjusted to ensure
carburettors are in the closed position with the pedal fully up.
9.3 Alternator/Dynamo
Parts required 056/057
1. Attach the alternator to its lower mounting with the 5/16” x 5 1/2”UNF bolt with washers and Nyloc
but don’t tighten fully yet. If using a dynamo or a alternator dressed to look like a dynamo this
mounts on the lugs on the engine mount with two 5/16” x 1’UNF bolts and Nyloc nuts but again
don’t tighten these fully yet. The top mount is the adjustable threaded mount; the eye of this mounts
in the top outside bolt in the group of four bolts in the water pump. The adjuster is supplied with a
slightly longer bolt to account for the eye. Remove the short bolt and attach the eye with the longer
bolt not tightening fully yet.
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