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  1. O

    2004 Yamaha 90 TLRB no fire on cylinder 1

    My son has a 2004 Yamaha 90 TLRB. Cranks and runs great until you try to get to WOT. Bogs down and falls on its face. Idles great. After doing a little checking we're finding no fire on cylinder #1. Swapped coils around and still just #1 not firing. It's getting gas to plugs, but no spark...
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    2003 Yamaha 90 TLRB Black dirty spark plugs

    My son has not mechanical aptitude at all. Whenever he feels like his motor is taking too long to start or just isn't perfect, he takes it to the shop and spends a lot of money. Today, he sent pictures of his spark plugs to his mechanic and based on that alone, his mechanic says he needs the...
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    Water temperature gauge or water pressure gauge?

    If you had room for one more gauge on your dash, which one would you go for on a 2 stroke outboard?
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    '98 Yamaha 115 runs hot if over 4,000 RPM's

    Late spring, I replaced the water pump, removed cylinder heads and exhaust cover and cleaned out all sediment (there wasn't much gunk in there), replaced poppett valve and checked thermostats. They both opened and closed at the correct temperature. Today, any time I got close to WOT, it would...
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    What additional gauge should I have?

    I have a 1999 Sailfish 198 DC and a 1998 Yamaha 115. With the stock gauges, I have a trim gauge, tachometer, speedometer and gas gauge. My dash has 2 round 2" holes with factory plugs in them for additional gauges. I mounted a Humminbird dash mount digital depth gauge in one of the holes...
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    Looking for info on an older 9.9 Mercury

    Serial number of this motor is 0B390028. I've spent hours searching and the only sites that recognize that serial number just take me to a parts catalog. Any help would be greatly appreciated. It's a 9.9 2 stroke that appears to have been made specifically to use remote start, steering and...
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    older 9.9 tiller handle seems to be for steering only. HELP

    I recently purchased an older 9.9 Mercury tiller handle electric start motor. It was used as a trolling motor on a pontoon boat. The owner had it set up with a control box. I'll be using it on a john boat, so the tiller handle will be the controls for me. The tiller handle twists, but...
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    1999 Stingray 4.3 Alpha 1 motor won't tun over

    I'm considering purchasing a 1999 Stingray with 4.3 mercruiser and Alpha1 outdrive. Cosmetically, it's in beautiful condition. The owner states that he has it serviced every year, takes excellent care of it and it has low hours. Based on outer appearances, I would have to say I believe him...
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