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Old 19 December 2013, 06:07   #21
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How about float valve in the float chamber on the carb sticking open & not shutting off fuel when its full, Or choke not operating in the right position ?
^ This
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Old 19 December 2013, 09:54   #22
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Ok, not getting a spark now. I can only assume the weak one I had before was a fluke! Where to start now?

I have fitted a new plug which sparks nicely when I plug it in to my old seagull.

I have continuity between the wee magnet and the small black cable that runs from the flywheel down to the ignition coil.

AAARRRGGGHHH!! And I think I'll need to get my chimnea going if I have I spend much more time in the garden fickering with this bloody thing!

Si
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Old 19 December 2013, 17:31   #23
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Had a Honda lawnmower that refused to start during the summer. Eventually traced that to a faulty ignition unit, considering you're no longer getting a spark.

Looking at the parts diagram for the Twatsoo, there's an exciter coil, pulser coil, ignition unit and CD unit. Check the exciter coil (fig 4 Magneto), reference 4-2. Any corrosion, seated properly?

http://www.tohatsuoutboardparts.com/...0221005-6).pdf
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Old 19 December 2013, 18:16   #24
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Gonna borrow an ignition coil from a friend tomorrow and also a CDI and hopefully one of those will be the problem. Then I'll get a hold of the twat that sold me it and try to make him pay for parts!
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Old 19 December 2013, 18:23   #25
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Then I'll get a hold of the twat that sold me it and try to make him pay for parts!
I can see it now!

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Old 20 December 2013, 02:54   #26
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I would check the plug cap connection first where it connects to the lead core , some have a sharp spike that can get corroded or if messing about with the plug it can get disturbed '& loose connection especially if removing the plug a lot ,i would check that first before anything else electrical. If it was me i would remove the plug cap & nip a bit of the end of the lead or see if if sparks before changing coils ect .
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Old 20 December 2013, 03:01   #27
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Gonna borrow an ignition coil from a friend tomorrow and also a CDI and hopefully one of those will be the problem. Then I'll get a hold of the twat that sold me it and try to make him pay for parts!
was it running when you bought it?
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Old 20 December 2013, 05:13   #28
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Cheers all - a few things to look at! I've bought 2 new plugs and neither are working, but both sparking on my seagul!

I was told it was working but I bought it off fleebay! D'oh! So it hasn't run since it arrived
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Old 20 December 2013, 08:59   #29
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Originally Posted by m chappelow View Post
I would check the plug cap connection first where it connects to the lead core , some have a sharp spike that can get corroded or if messing about with the plug it can get disturbed '& loose connection especially if removing the plug a lot ,i would check that first before anything else electrical. If it was me i would remove the plug cap & nip a bit of the end of the lead or see if if sparks before changing coils ect .
You have had a spark, now you have no spark, could be dodgy plug leads, they should be replace as a matter of course anyway, could be many years old.

Good luck
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Old 20 December 2013, 12:39   #30
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You have had a spark, now you have no spark, could be dodgy plug leads, they should be replace as a matter of course anyway, could be many years old.

Good luck
Just checked, all good with the HT lead. good continuity along it.

sadly my friends tohatsu was totally different (a 3.5) so didnt get to try any parts. I might just buy a CDI and return it if thats not the problem!

So frustrating!
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