Benelli Tornado Tre Novicento 903, Workshop Manual

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UK
128
MF9_UK
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L I M I T E D E D I T I O N
The following procedure is applied to the valves (4), the springs
(5) 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 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.
5.3.2 CHECK VALVES AND VALVE GUIDES
The following procedure must be carried out on all valves and
relative valve guides.
Check that values (A) and (B) are within the tollerance of the
specific values.
If values (A) and (B) are not within the value limits, change the
elements.
SUCTION DIMENSION LIMITS
A max. = 5.05 mm
B min. = 4.965 mm
EXHAUST DIMENSION LIMITS
A max. = 5.05 mm
B min. = 4.955 mm