Small 2ph 2 stroke mariner runs well for 1 minute then stops.

[aberglas]

Starts easily, fair compression.
Gravity fed fuel (vent tap open!), undo small bolt on bottom of float and good flow.
Jets look clean, but would not run well if blocked.
Water cooling good.

Seems to be related with warming up. A bad gasket somewhere? Or ignition?

Any ideas most welcome.

 

[ondarvr]

Does it have spark after it dies, and how long do you need to wait before it will start again?

 

[Canufixit2]

Can you access the carb throat when running?? Try squirting some starting fluid in the carb when it starts to die. This my allow you to rule out the fuel as an issue.

 

[tivct]

As stated check spark & carb. You may be running long enough to empty the bowl and it's not being supplied from the tank adequately.