Carbureted Models (B2200 Federal)

Check battery condition.
Ensure sufficient secondary spark is available.
Verify choke valve is closed (engine cold).
Verify choke valve is open (engine hot).
Ensure fuel level is at specified mark on carburetor sight glass.
Ensure fuel system pressure is correct.
Check mixture control valve operation.
Check for correct vacuum hose routing.
Check slow fuel-cut solenoid valve operation. A click should be heard from solenoid valve as ignition is cycled on and off.
Check duty solenoid valve for correct switching.
Check charcoal canister operation by clamping hose(s) shut. If problem goes away, check vacuum hose routing. If routing is correct, replace charcoal canister.
Ensure winter grade fuel is not used in warm climate conditions.
Ensure exhaust system is not restricted.