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!
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. ;@)
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.
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
If it were mine with ONLY 10 hours I would fog it, "maybe" change the gear oil (Only because it could have leaked), and put it away. Next year start it up and run it, making adjustments as needed. Spark plugs are good for hundreds of hours.
Actually we boat year around in California so I have never winterized anything for myself Other people seem to think 70 degrees (21c) is too cold to take a boat out in January
If it is running ruff get that sorted, other wise I would change the gear oil as you cant really check it with out changing it!
Check the impeller and spark plugs but no need to change if they are in good order
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I am going to get one for it 
