Some items from this specific schematic: Shim(19.1x25x0.3), Pin,exhaust Valve 48.5mm, Circlip, Valve,exhaust,lower,left.
The Exhaust Valve (model P/r/s/t) is made up of components including this Guide Set,exhaust Valve which is the most expensive.
On this parts fiche the Screw is the most specified component.