If necessary, disassemble secondary air system valves following the same procedure for both of them:
Loosen the two screws (10) and slide out, in this sequence, cover (11), reed valve (12), spark arrestor plate
(13), secondary air plate base (14), the relevant retaining screw (15) and O-ring (16).
Note
block off the secondary air system duct on head cover with a clean cloth so as to avoid any impurities from
entering the duct.