Turn the choke control lever counterclockwise until the choke is completely closed. Then we turn the throttle control lever until the throttle valve of the first chamber is fully open. The throttle valve of the second chamber must remain closed.
Turn the choke control lever clockwise until it stops (air damper must open fully), and the throttle control lever until the dampers are fully open. If the throttle valve of the second chamber remains closed, it is necessary to eliminate the jamming of the second chamber lock lever (the reason may be the disconnection of the spring of the lock lever).