yamaha 40hp plane issue

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bvolle

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Joined
Apr 30, 2011
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I have a 1986 15' skeeter bass boat with a yamaha 40hpELJ. engine runs beautiful i just rebuilt all carbs new plugs and fuel filter and i change the key way as well. my issue is that i cant get my boat to plane. i have to have a friend move to the bow just to plane out but after that shes fine stays on plane to u lower rpms but if u loose plane to have to repeat the process. As this my first boat im stuck at a stand still any suggestions? oh and i forgot that i put a sport se 300 hydrofoil but still has issues planing.
 
9

99yam40

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Sep 7, 2008
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Re: yamaha 40hp plane issue

I would think you do not have the motor set properly and it is pushing the bow up too high on start off. If you have a manual tilt you will have to move the stop pin in toward the boat 1 or more holes or put more weight to the front of the boat.

But if you had have a power tilt and trim motor then adjust it all the way down to start off and then trim up after on plane.
 
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bvolle

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Joined
Apr 30, 2011
Messages
2
Re: yamaha 40hp plane issue

i have manual trim and iam i only have one hole left to go..... I called my local marine shop an they said my pitch on my prop is way off. i currently am running a
10 1/4"/14"pitch an they recommended i go to a 10 1/4"/11"pitch. do you think this could be my problem?
 
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