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Old 14 November 2014, 12:57   #1
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Do I or don't I?

I'm getting ready to sort my SIB out for the winter and will be doing that this weekend. With regards to the engine (Yam 30DMO), I'm going to be spraying the carbs and cylinders with fogging oil but I'm also considering changing the impeller, fuel filter and spark plugs so I know that it will not need anything when I use it next year. But it's only done 10 hours (not even that to be honest!) since it last had a service so should I change the impeller etc? Also, I need to adjust the carbs so that it idles properly (it keeps dying when taken below the start position on the tiller), should I also do this before storing or next year? Cheers in advance!
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Old 14 November 2014, 13:25   #2
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If I was you I would change the impeller every year in Spring. It could deteriorate (unlikely) over Winter. As for the carb get it sorted now! Over-wintering it may lead to a build up of old fuel "residues" in the carb which might complicate things when you come to start it in the new year. If you sort it now and it runs fine then you have a better chance of it starting in the Spring with fresh fuel and new plugs! I know you stated you will be spraying it with fogging oil but nothing is better than putting an A1 engine into storage. Putting a "Cranky" motor into storage leaves it "Cranky". Don't forget to renew gearbox oil NOW or at least make sure it's up to level as moisture can get in and corrosion can set in.
This is what I think you should do and other more experienced people might disagree. ;@)
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Old 14 November 2014, 13:29   #3
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A light spray under the hood with WD40 wont go amiss either. Other proprietary brands are available!
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Old 14 November 2014, 14:17   #4
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A light spray under the hood with WD40 wont go amiss either. Other proprietary brands are available!
Hi all

As to your impeller after next year will be fine,10 hours is nothing.Also do you have single or twin carbs,try a digital tach about a £10 on ebay for correct idle and WOT.
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Old 14 November 2014, 14:20   #5
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Isn't WD40 corrosive? You can get corrosion guard spray for outboards
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Old 14 November 2014, 14:28   #6
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I believe that WD40 rots the pvc on the wiring, whether thats true or not I'm not sure.
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Old 14 November 2014, 14:34   #7
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My engine hasn't suffered from WD40 probs and it's 45 years old, but maybe these new models aren't so "hard".
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Old 14 November 2014, 14:34   #8
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Hi all

As to your impeller after next year will be fine,10 hours is nothing.Also do you have single or twin carbs,try a digital tach about a £10 on ebay for correct idle and WOT.
The engine has triple carbs I am going to get one for it
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Old 14 November 2014, 14:40   #9
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WD-40 Brand FAQs - Learn About WD-40 Brand's & Our Products

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Old 14 November 2014, 14:42   #10
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I believe that WD40 rots the pvc on the wiring, whether thats true or not I'm not sure.
Just found this marketing blurb lol
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