76 MOTORCYCLE CLASSICS September/October 2019
MOTORCYCLE CLASSICS
HOW-TO
17
Place the rotating trunion in the
actuating arm of the gantry, pull
the slide cable up through the slot,
making sure the locknut rests squarely
between the shoulders of the trunion.
Repeat on the other side.14
Going back to the gantry plate,
remove the top screws from one
side and loosen the other so that the
plate is loose on the carburetors.18
Pull the cable up only far enough
to slip it into the trunion; it is
possible to pull the slide up far enough
to snag on the gantry top (ask me how I
know that). That’s outside the operating
range of the slide so not likely to happen
in use.10
Using your preferred method,
replace the slide return springs,
using the new ones supplied with the
kit. I like to snap the spring coils over the
cable and essentially screw the spring
onto the cable. It seems much easier than
trying to compress the spring. Hold the
cable and slide all at once.
12
Once the carburetor mounting
screws are loose, attach the gantry
plate with the carburetor top screws and
carefully tighten them. This aligns the
carburetors to the plate.15
Take one new slide assembly and
carefully place it into the side
of the gantry plate where you have
removed the carburetor top screws. I
say carefully because it is all too easy to
snag the needle on the needle jet when
inserting the slide. Take your time and
it will drop into place.13
With the carburetors linked
together with the gantry plate,
re-tighten the mounting screws with the
cut down allen key.
16
Replace the top screws but don’t
tighten them yet, then remove the
screws on the opposite side and replace
the slide assembly there. Once you have
both slide assemblies in place, tighten
the top screws evenly and snugly, but
remember they have farther to go than
they did originally, so not as much thread
engagement with the bodies.
11
Now we go back to the bike and
loosen the manifold to head screws
about one turn each. I’ve got a 7/32-inch
allen key that’s cut down on the short
end to fit between the carburetor and
manifold. I’ve also crudely cut a ball end
on the long end since I didn’t have a
spare ball end key to butcher.