Question about Clymer Marine Maintenance and Repair Manual '99 '02 Yamaha 115 250 HP 2 stroke Outboards

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I have two yamaha 115 hp outboard one engine suddenly become power less than the other one gave me 5 the other 4.5 what is the problem

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More info needed but it sounds like fuel,maybe water like condensation

Posted on May 11, 2014

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Posted on Jan 02, 2017

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Starts up, then why does it cut out when going to full throttle?


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Unscrew the 4 idle mixture screws 1/2 turn 1 at the time till sneezing stops...
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1 Answer

Free download for repair manual for an Evinrude 1987 40HP outboard motor


My outboard motor is old and used.When I went to run it for the first time everything worked except when I went to put it in forward gear the boat went slowly but when I gave it more gas the engine just reved up but the boat wasn't going any faster.The motor is 40hp gale model.I think because it is bought used the prop is not the right one and it seems like it's slipping as I go faster.
I would appreciate any feedback on this problem.

Thax, Don

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1 Answer

Yamaha 115 will not shut off with key or kill switch


not enough information on the motor. what year and model? but all yamaha outboards are shut down by the C.D.I. being grounded by the key switch or the emergency kill switch. the cheapest thing to test or replace is the key switch and the emergency kill. with more info on engine I can help you further.

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