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Old 04 March 2012, 06:32   #1
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Country: UK - England
Town: Coventry/Ipswich
Boat name: Dytiscus Rubra + tt
Make: Kingfisher/Avon 3.1
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Age of a Johnson

Hello,
Bought a 15hp Johnson at the weekend !! Good price but a bit of prettying up to do also one of the cast cups that hold the rubber steering damper is broken so Ill need to find one, I have an old 6 & 8 hp rude so wonder if its the same ?
Does anyone know how to work out the age of the unit from the serial / model number. I think its q old as its a sea horse eeeek.

Thanks, Col
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Old 04 March 2012, 08:20   #2
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What's the model number ?

Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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Old 04 March 2012, 08:47   #3
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Country: UK - England
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Boat name: Dytiscus Rubra + tt
Make: Kingfisher/Avon 3.1
Length: 9m +
Engine: Inboard/Johnson 15hp
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Hello

Hi Peter,
Its 15R74S. Is thats 1974 Ooops if so better get my spanners out !!
Thanks Col
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Old 04 March 2012, 09:11   #4
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You got it enjoy

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Old 04 March 2012, 10:20   #5
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Age of a Johnson...

Sorry guys, it's that time again

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Old 05 March 2012, 17:43   #6
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Country: UK - England
Town: Coventry/Ipswich
Boat name: Dytiscus Rubra + tt
Make: Kingfisher/Avon 3.1
Length: 9m +
Engine: Inboard/Johnson 15hp
Join Date: Aug 2011
Posts: 17
Thanks

Hi Chaps,
Thanks for the info and the educational video !! Looks like I have a 74 model. Just after I posted my question I stripped it right down and apart from a few purely straight mechanical problems (twist grip is had it and a damper casting broke ) It seems ok carb is clean and a massive spark. Put my finger over the plug hole and turned it over and it felt pretty good compression !! Do you just test this properly with a standard comp tester ? and if so any idea on what its meant to be ?
Ah and the video reminds me must get a new bulb for the fuel line !!! ha ha.
Thanks Col
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Old 06 March 2012, 03:16   #7
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Quote:
Originally Posted by willk View Post
Sorry guys, it's that time again
A Suzuki seems, well, inadequate after that
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Old 09 March 2012, 04:10   #8
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Quote:
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Sorry guys, it's that time again

Dammit, beat me to it - as soon as I saw the title I was going to post that, will teach me to log on to Ribnet more often
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