Tom,
Thanks for checking the archives ..........
1- The factory mixture screws usually are different an are allegedly
set with a CO meter, (it is a good idea to note where you find them
originally ... this information may come in handy at a later date).
2- If you want to clean the pilot mixture screws you probably will
have to take them out ... If you want to try to clear the pilot
mixture paths then by all means .. give the carb cleaner a shot ...
you might also want to try this Yamaha cleaner .. Rey Kirkman tells me
he thinks it will do even a better job than blasting but I have not
tried it myself ...... following is part of the text from his
testimonial, (I am sure he won't mind):
"Better and almost a sure cure is Yamaha Carburetor Cleaner, part #
ACC-11001-43-00. Cost about $5-7 for 32 oz. You drain the float
bowls, and Yamaha makes that incredibly easy. Then a mixture of the
cleaner and gasoline is introduced into the carbs via the hose
entrance from the fuel filter. The tricky part is getting the stuff
into the carbs. I used an auxiliary testing gas tank, but I think a
simple ketchup squeeze bottle or turkey baster would work. Yamaha
suggests leaving the mixture in for an hour and then draining it. I
think it needs more time, like overnight. Finally the stuff is
drained and gas is reintroduced."
If you are lazy like me and don't have access to the mixture screws or
an air compressor etc .. I would surely try a blast of carb cleaner in
the pilot air jets at the top of the carbs ... or Rey's suggestion.
3- I am not sure what o-rings you are referring to ?? I don't replace
any o-rings unless they are cracked or look like they have been run
over by a truck ..... Obviously, they need to be intact and have some
ambition to recover when depressed or they will not seal very well.
4- See Rey's comments about using the Yamaha carb cleaner ... I assume
you are talking about cleaning the fuel bowl. Yes this will work but
if you think you have trash floating around in there you might as well
get over it and take a look. Again though .. there is nothing wrong
with trying the easy way first.
IMHO ....
campbell
----- Original Message -----
From: <[EMAIL PROTECTED]>
Subject: Carb questions
> Read some of the archives and it helped me out on
> most of my carb tuning questions. A few other questions though..
> 1. When factory sets mixture screws should they all be the
> same amount of turns because all 4 of mine were different
> settings?
> 2. If the mixture needles are dirty, can you just spray down
> with carb cleaner to clean?
> 3. Should the o rings be replaced?
> 4. Can one clean the floats with carb cleaner as well?
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