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1987 CMX250C AC
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you will find many posts here recommending soaking in dip for as long as a week.. rotate body at least once a day to purge trapped air out of passages.
Some carbs have had to have more than one ultrasonic cleaning..

I don't recommend more than 20 - 30 minutes exposure to ultrasonic cleaning at a time as pitting of aluminum can occur called cavitation. Move parts in tank if multiple cleanings are required.
Ultrasonic cleaning solution is important too as aluminum reacts badly to cleaning solutions containing either acidic or base chemical makeup.
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