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Old 28 August 2015, 10:05   #11
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,622
Pumping the primer bulb while increasing RPM should tell you if it's a fuel draw issue. Won't tell you if things are clogged (at least not definitively) though.


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Old 28 August 2015, 12:09   #12
Country: UK - Scotland
Length: 4m +
Join Date: Apr 2015
Posts: 45
Oil injection model ??

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Old 29 August 2015, 04:03   #13
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Country: UK - Scotland
Town: Isle of Lewis
Make: Thundercat (TI)
Length: 4m +
Engine: Yamaha 70
Join Date: Jul 2010
Posts: 517
I had exactly the same problem this week with my yamaha 70 2 stroke tiller. Check the carbs, take out all the jets and clean them. Use carb cleaner/airline through them and a thin wire if you can find one (from a wire brush etc) to put through the holes in the jets
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Old 21 September 2015, 15:50   #14
Country: UK - England
Length: 4m +
Join Date: Jul 2015
Posts: 9
Just as an update turned out to be slight water/ crud in the centre carb, as soon as it was cleaned out it ran beautifully again. So back to 100% now.
Thanks for the help Guys

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