Yamaha 30 hp tiller loud with throttle??

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So I got my idle set on my 30 hp tiller, but when i give it gas in forward it it really loud and seems to be revving high..... WHat gives???
 

99yam40

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Re: Yamaha 30 hp tiller loud with throttle??

can you explain that a little better?
not sure what you call loud
Is it in the water on a boat?
is the noise gears grinding?
Is the prop slipping?
 
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Re: Yamaha 30 hp tiller loud with throttle??

its not the gears or anything, its just the motor running and it seems really loud. im running it on a flusher in my driveway
 

99yam40

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Re: Yamaha 30 hp tiller loud with throttle??

put it in the water and see how it sounds
 
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Re: Yamaha 30 hp tiller loud with throttle??

I know thats what I was thinkin, it just sounds really high pitched, like a speed bike. cause when i turn the throttle handle and im not even fully through throttle positions and it sounds ridiculously loud and revvs high, and starts to pop a bit. not really sure what it is
 
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Re: Yamaha 30 hp tiller loud with throttle??

yeah it sounds fine in idle, but when i put it in forward and give it throttle, it gets really loud with only like 1/8 throttle. im afraid if I keep going up its gonna blow. the rpms seem super high
 

kfa4303

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Re: Yamaha 30 hp tiller loud with throttle??

You shouldn't really put it in gear and rev it on the muffs. The motor needs an appropriate amount of back pressure to run properly. I would try running it on the open water before you make any adjustments to it.
 
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Re: Yamaha 30 hp tiller loud with throttle??

Ten four yeah Imma run it in a bucket of water tomorrow, and see what is sounds like man.
 

99yam40

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Re: Yamaha 30 hp tiller loud with throttle??

do you understand we mean you need to have it on a boat
and in the water even if still strapped to the trailer
so that there is load on the motor when you put it in gear and raise the RPMs?
 
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Re: Yamaha 30 hp tiller loud with throttle??

so basically just put it in the water? I have the idle set good now. any advice on setting the three mixture screws?
 

99yam40

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Re: Yamaha 30 hp tiller loud with throttle??

pilot/idle screws should be set at factory settings, if everything is cleaned properly it should run fine.
Also should have the link and sync settings done as manual states
 
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