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  #1  
Old 09-15-2004, 08:14 AM
joepa joepa is offline
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Default Yamaha 115 4-stroke Won't Start Unless...

I have a frustrating problem with 2002 115 Yamaha 4-stroke when I try to start it. Most of the time, I turn the key on, the fuel pump works but when you turn the key the rest of the way, it acts as if there is no power connected. The crazy part is: if I tilt the motor up and down, sometimes it will start. If it doesn't start then, I run my T-8 for a short distance and then the 115 will start. I have done what some of you have suggested here and I'm sure it is not the battery or the connections. I thought it was the neutral switch but now I don't think so. Why will the 115 start after running the T-8 for a short distance without touching anything else but the key? Could it be the ignition switch?
By the way the cables on my T-8 are now so hard you have to use two hands to move it. Could that be the problem with the 115 also, maybe the cable not adjusted properly? Dealer thinks I'm nuts. He said it has to be a bad connection. HELP!!!
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  #2  
Old 09-15-2004, 10:24 AM
fishin4fun fishin4fun is offline
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Location: Hyrum, Utah, USA.
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Default RE: Yamaha 115 4-stroke Won't Start Unless...

>Most of the time, I turn the key on,
>the fuel pump works but when you turn the key the rest of the
>way, it acts as if there is no power connected.

Does this mean the starter motor does not turn over? Or does it mean it just won't fire and start? If the starter motor does not turn over then it has to be an electrical problem, possibly in your ignition switch. If the starter spins but the motor won't start, you might have a fuel delivery problem. Do you have your T8 and your 115 supplied by one tank or two different tanks? Give us a little more info and maybe someone can put you on the right track.
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  #3  
Old 09-15-2004, 10:24 AM
fishin4fun fishin4fun is offline
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Join Date: May 2003
Location: Hyrum, Utah, USA.
Posts: 164
Default RE: Yamaha 115 4-stroke Won't Start Unless...

>Most of the time, I turn the key on,
>the fuel pump works but when you turn the key the rest of the
>way, it acts as if there is no power connected.

Does this mean the starter motor does not turn over? Or does it mean it just won't fire and start? If the starter motor does not turn over then it has to be an electrical problem, possibly in your ignition switch. If the starter spins but the motor won't start, you might have a fuel delivery problem. Do you have your T8 and your 115 supplied by one tank or two different tanks? Give us a little more info and maybe someone can put you on the right track.
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  #4  
Old 09-15-2004, 11:43 AM
Engine Rigger
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Default RE: Yamaha 115 4-stroke Won't Start Unless...

I would start with the neutral safety switch. For some reason, there have been a rash of those that have been bad this year.
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  #5  
Old 09-15-2004, 12:29 PM
Unlogged T-Mac
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Default RE: Yamaha 115 4-stroke Won't Start Unless...

Ditto ...rigger.
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  #6  
Old 09-15-2004, 12:37 PM
joepa joepa is offline
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Default RE: Yamaha 115 4-stroke Won't Start Unless...

fishn4fun:
The motor won't turn over at all, like no battery is connected.

engine rigger:
I tried to get at the back of the throttle controls to replace the neutral switch but they were rigged at the factory which makes it very difficult to get to. They are mounted to a big vinyl covered piece and the cables go through the side of the boat to the back of the vinyl covered piece. You would have to completely disassemble both throttle controls to get at the back.
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