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25 hp Yamaha 4 stroke #12970854 11/20/18 02:57 AM
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txninja Offline OP
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Bought a used 1999 25 hp 4 stroke. When I bought it everything was good, ran great, idled and started fine when hooked up to muffs. Took it to the lake and everything was great, after running for 20 min.we killed it and fished. Then it wouldn’t start. I cleaned the carb, replaced the fuel lines, new fuel pump, new plugs. Ran it again, same result. Any tips? Boat shop is 2 months out from being able to look at it. I appreciate it.

Last edited by txninja; 11/20/18 02:58 AM.
Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971099 11/20/18 12:37 PM
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boocat Offline
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I have no idea, I would't make a mole on a mechanics a$$, But whatever it turns out to be, I would look for a source of ethanol free gas.

Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971169 11/20/18 02:01 PM
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boatman025 Offline
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Where you located I can check it out for you


Hughes Marine
3855 Osage Lane
Wylie ,Texas
Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971176 11/20/18 02:05 PM
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Check fuses under cowling.


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Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971205 11/20/18 02:24 PM
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Alumacraft 14 Offline
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Possible coils are getting hot. Run the motor like you did, then kill it let it sit 10 mins and check for spark.

Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971212 11/20/18 02:28 PM
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gary purdy Offline
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I am at Lake Alan Henry and can check it out. 806-281-7135


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Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971213 11/20/18 02:29 PM
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txninja Offline OP
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This is a pull start (manual). I’m loocated in Amarillo. I’ll check spark

Re: 25 hp Yamaha 4 stroke [Re: txninja] #12971237 11/20/18 02:50 PM
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txninja Offline OP
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Gary, I’ll give you a shout later today. Thanks!

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