Worth seafoaming a Yammy 3000 iSE before replacing carb?

kevden wrote:
I agree with sam spade. I have cleaned throttle bodies and intakes with seafoam and had to scrub to get the varnish off. I used to put a can of sea foam in the gas tank of our vehicles at every oil change, but switched to the b12.

x2. Seafoam is more a stabilizer, B12 is a cleaner. Definitely no harm to cylinders after Seafoam, though not much use either.
In the worst case scenario adding B12 to fuel won't help, and you'll need to take the carb off, soak it in B12, blast with air and put it back.