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Old 06 February 2013, 03:14   #1
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1978 Yamaha 9.9 outboard fourstroke

I have just bought one of these as a replacement for my existing outboard that died. My old one was an electric start with an alternator and the new one is a hand pull. Does anyone know if the hand pull verisons are able to charge a battery?
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Old 06 February 2013, 05:12   #2
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1978 - Yamaha - four stroke - are you sure?
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Old 06 February 2013, 08:12   #3
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Yamaha did build a 4-Stroke in 1978, but as far as i recall it was a motorcycle motor.
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Old 07 February 2013, 04:52   #4
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yamaha 9.9

The serial number is F9.9AM 6G8UL 701023. Maybe the date is wrong but it is definately a 4 stroke
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Old 07 February 2013, 05:01   #5
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Most yamaha hand starts can be modified to give you a 12v output for charging etc but you'll need to buy and fit the kit to convert the 12v ac it produces to 12v dc and regulate the voltage etc.
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Old 07 February 2013, 05:06   #6
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Thanks for that Hamster! any idea how much this is likely to cost and would a yamaha dealer have the kit for such an old engine?
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Old 07 February 2013, 06:07   #7
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I did get a quote years ago for a similar size engine but can't remember the price. Give a yamaha dealer a call and give them your serial number and they will be able to tell you if they can supply what you need.

If your engine is a 4 stroke I very much doubt it was made in 1978
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Old 07 February 2013, 06:09   #8
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Quote:
Originally Posted by friendship View Post
The serial number is F9.9AM 6G8UL 701023. Maybe the date is wrong but it is definately a 4 stroke
It is definitely a 4 stroker but Yamaha didn't introduce their first 4 stroke outboard until 1984
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