Please click on the pdf link above to see an exploded diagram in a new page then refer back to the parts list below where you will find the diagram numbers in order down the left hand side in brackets
Choke sizes 38-40-41mm
Independent starting circuit with adjustment by separate jet
Left or right-hand idle mixture adjustment
Mechanically operated adjustable diaphragm accelerator pump system
45mm clamp on or 46mm elastic connection to engine
52mm plain or M52 x 1.25mm threaded connection for trumpet/air filter attachment