Fuel
System
Turn the jet adjusting nut (5) on both carburetters in the same direction,
one flat at a time, up to weaken or down to enrich, until the fastest speed is
recorded on the tachometer. Now turn both nuts up slowly until the speed
just commences to fall. Turn the nuts down equally very slowly by the
minimum amount until the maximum speed is regained.
Re-check the idle speed and carburetter intake balance; adjust as necessary
with the throttle adjusting screws.
Set the throttle interconnection clamping levers so that the link pin is
0.012 in. (0.3 mm.) away from the lower edge of the forks (see inset,
8)
as
follows:
Stop the engine and slacken both clamping bolts (7) on the throttle spindle
interconnection.
Insert a feeler gauge (9) of
0.060 in. (132 mm.) for Manual gearbox or 0.028
in. (0.70 mm.) for Automatic transmission between the throttle shaft lever and
the cold start interconnection rod. Move each lost motion pick-up lever in
turn until the tag of the lever rests on the lower arm of the carburetter
throttle fork. Tighten the clamping bolts (7, Fig.
4)
on each fork, ensuring
that there is approximately in. (0.79 mm.) end-float on the interconnec-
tion rod. Remove the feeler gauge. The pins on the throttle spindle lever
should then have clearance (8) in the throttle fork.
With the fast idle cams of both carburetters against their respective stops,
set the cold start interconnection so that both cams commence to move
simultaneously.
With the fast idle cams against their stops check that a
in. (1.59 mm.)
free movement (1) of the mixture control (choke) cable exists before the
cable moves the cams.
Run the engine at 1,500
r.p.m. and check the carburetters for balance.
Pull out the mixture control (choke) until the linkage is about to move the
carburetter jets, and lock the control in this position.
Using the balancing meter to ensure equal adjustment, turn the fast idle
adjusting screws to give the correct fast idle speed (see 'GENERAL DATA').
Unlock and return the mixture control, and stop the engine.
Refit the air cleaners.
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