VESPA GT 200, Руководство по ремонту

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Fit the valves, the springs and the spring
retaining caps. Using the appropriate special tool
and adapter, compress the spring and insert the
split cones in their seats.
Specific tools and equipment:
Valve installation tool 020382Y
Adapter 020382/11Y
Note: Do not change the valve assembly position.
Fit the valves with the reference color on the half-
cones side.
10.10.32 Inspecting the Timing Components
- Inspect the chain guide and the chain tensioner
for signs of excessive wear.
- Check there is not excessive wear on the timing
chain, the camshaft sprocket and the timing
chain sprocket on the crankshaft.
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Replace worn components, as necessary, and in
the case of wear on the timing chain or
sprockets, replace all three components as a
group.
- Remove the chain tensioning screw with the
associated washer and spring. Check there is no
wear on the one-way valve mechanism.
- Check the tensioning is in good condition.
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If any of the chain tensioner components is
defective, replace the complete chain tensioner
assembly with a new one.