hsr-benelli S-series Service Manual page 50

To remove the valves use a valve dismantling instrument (2)
with correct attachment (3), press the valve down and take off
the two semi-cones.
Loosen the clamp and remove the valve and its components
as shown on picture.
The following procedure is applied to the valves (4), the springs
(5 and 6) and relative components (7, 8 and 9).
NOTE:
Make sure that valve (4) has a perfect seal by pouring
petrol into the conduits and making sure that
there are no losses through the valves. Make sure
that the valves are perfectly sealed.
Remove the small bowls taking note of the position on each
valve and coupling them to their pads.
Free the pusher spring plate (7) using the specified instrument
to remove the two lock cones.
Remove the external spring (5), the internal spring (6), valve (4),
the valve seal ring and the lower cup.
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