Acting up Yamaha 50 TLRD 2005

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Recruit
Joined
Jun 3, 2011
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3
I have a 2005 Yamaha 50 TLRD on a pontoon boat. The engine starts right up, and it idles normally. I warm it up on idle for a few minutes before I head out. After taking off, after 2-3 minutes, the engine dies when I open the throttle. After this, it restarts right away, and then dies in a few seconds. I have to use the emergency choke (red knob) and restart it a few times. After that, the engine runs fine.

The carburators were cleaned a few months ago, checked the spark (7/16th gap) & spark plugs, all look nice. I think it may be fuel related.

Any advice please?

Thank you!
 
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