If the engine starts to smoke.. and slowly gets weaker
within the 7 minutes - the the problem should be the auto-choker.
Auto-choker doesn't switch off.
If the engine sudden shuts off - after the 7 min. - it it must be the
Fuel-tap.
The fuel-tap should witch ON, when the engine is running
(, and the vacuum hose is connected to the inlet, as it should).
R0501
Chrisitan
July 2014