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Old 15 August 2016, 09:16   #1
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Country: UK - England
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Boat name: Wave Bouncer
Make: Avon
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Engine: outboard, petrol, 40
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Avon SR4

I have an early 90's SR4 with a 40Hp ex RNLI Mariner (Yamaha). Its manual start and I am not getting any younger.

Has anyone updated one of these engines to electric start or if I go for an engine change has anyone fitted a four stroke, worried about the extra transom weight and any performance problems.

Love the boat and the performance.
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Old 15 August 2016, 11:10   #2
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I believe all you need to add is the different fly wheel and starter. Don't believe that year came with teeth on the fly wheel.
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Old 15 August 2016, 13:04   #3
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Quote:
Originally Posted by idsebby View Post
I believe all you need to add is the different fly wheel and starter. Don't believe that year came with teeth on the fly wheel.
Thanks for the help. Yes the flywheel is without teeth and I assume I need to track down a motor with a mounting bracket, does the fuel pump get in the way

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Old 15 August 2016, 13:46   #4
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Country: UK - England
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Have a look at woods of crediton they do ex military Mariners starting at 500 might be an option to get what you want and sell yours on
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Old 15 August 2016, 17:31   #5
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Country: Ireland
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Sadly last time I called woods they said they didn't have any, told me the web site is way out of date.
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Old 15 August 2016, 17:32   #6
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Country: Ireland
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Engine is pretty much the exact same with electric start. Just need the bracket flywheel and starter as far as I remember
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Old 15 August 2016, 17:37   #7
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Country: Ireland
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Click image for larger version

Name:	ImageUploadedByRIB Net1471300609.137202.jpg
Views:	54
Size:	267.0 KB
ID:	115180

Same engine with electronic start and pull start.
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Old 16 August 2016, 05:22   #8
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Country: UK - Scotland
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Don't you need charge coils,solenoid and rectifier / regulator too and extra wireing harness to connect it all together?
I'd imagine it's easier to sell yours and buy another unless you can find a dead donor to get all the bits off
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Old 16 August 2016, 12:43   #9
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Country: Ireland
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Engine: dt85
Join Date: Jan 2016
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Not sure but I believe the mil spec motors have the charge circuit Got rid of two of them last month so can't go check. I believe it's just a couple of wires that connect into the solenoid?
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Old 16 August 2016, 12:47   #10
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Country: Ireland
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Join Date: Jan 2016
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Name:	ImageUploadedByRIB Net1471369615.249460.jpg
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ID:	115198 here is a pic of the electrics on the electric start.
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