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High Altitude Problem

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John Dunlop
New member
Username: jdun1

Post Number: 1
Registered: 04-2008
Posted on Tuesday, April 22, 2008 - 07:59 pm:   Edit Post Delete Post View Post/Check IP

We relocated from 200' above sea level to 4,800' above sea level and my 2006 Yamaha F15 4 Stroke went from a top end of close to 28 mph (GPS) to about 5 mph! I have a G3 15' v-haul I use for duck hunting. I contacted Yamaha and three Yamaha dealerships and none of them will endorse re-jetting the motor. In fact the factory said "that's just the way it is". The motor starts and runs smooth as silk just no rpms/top end at all. I did drop from a 9 1/4 x 11 prop down to a 9/14 x 9 prop and that made absolutey no difference at all. Is there anywhere that I can possibly get information on re-jetting so I can do it myself, the Yamaha people were about as useless as this motor is. Very disappointed. I can't believe they don't use outboards in the Rockies, or if so how they can be satisified at a third the horsepower. I wish I would have known this prior to relocating, at least I could have sold the thing before we moved. Big mistake.

Thanks for any recommendations.
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JUST-IN-TIME
Senior Member
Username: justintime

Post Number: 3843
Registered: 09-2006


Posted on Thursday, April 24, 2008 - 10:29 am:   Edit Post Delete Post View Post/Check IP

because it is illegal to re-jet now a days
FREAKING EPA!!!!

shoot me an email

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