Yamaha 40hp Mixture Screws

Yacht_Polaris

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Joined
Aug 17, 2010
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Hi Chaps

I have a 40hp Yamaha Enduro Outboard and one of the crew changed the mixture screw settings and cant remember what they were before...

Engine runs fine at Idle but at FULL Power suddenly dies like it is having fuel starvation.

Then after a minute or two we can restart and go at slow speed.

There are two mixture screws one on on each carby throat. The Idle one I have set at 1 1/4 turns from just being nipped closed. But the other one I am not sure how to setup....?

How many turns for scre number TWO ?? Anyone can help me please?

Thanks Capt Tom
 
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