Re: Will a can of decarb help my idle?
Don't be scared of that carb, fish. You can handle it. Just use the little straw thing that comes with a can of carb cleaner and spray out all the little passages and such, and put a carb. kit in it which will have a needle and seat, several gaskets (including some that go with other motors since they use the same carb kit for several models) and packing washers for your slow speed adjustment screw/needle. Spraying that decarb stuff through the carb throat is a complete waste of time as far as getting it to idle better. A good decarb may be helpful, but as said already-----clean that carb!
Be especially sure you spray some cleaner through that low speed passage after you take out the screw that adjusts the low speed mixture and look in the carb throat while you're spraying so you can see if cleaner is coming out the 3 or 4 TINY holes in the top of the carb throat. In not, it still won't idle right and you'll have to soak it and spray carb cleaner or compressed air through there again. You can take out the little welch plug in the top of the carb and get to it that way, but most of the time I can get it clean without taking out the plug. If you don't know what a welch plug is, it's a little concave aluminum disk that fits in the hole in the top of the carb, and when you ping down on it the disk flattens and gets tight, sealing the plug.
BTW, the hard part on that carb is the high speed jet in the bottom of the bowl, but if your motor runs good wide open then it's already clean. An outboard carb. is not even in the same ballpark as the complexity of an automobile carb. You're going to laugh when you see how simple it is on the inside!
Good luck,
JBJ
