Went down to look at my bike earlier.
the 1st pic posted of the coolant tube is actually not the main one. that is just share the coolant from carb 1 and 2. see in the pic carefully slightly on the left there is another hose coming out....that links 2 and 3. and from carb 3 another hose to 4.the 2 main hoses that supply the coolants to heat the carbs are one on the right side the other i think on the left but more inner.
try to post pics soon. not too gd at doing this...pic uploading
the 1st pic posted of the coolant tube is actually not the main one. that is just share the coolant from carb 1 and 2. see in the pic carefully slightly on the left there is another hose coming out....that links 2 and 3. and from carb 3 another hose to 4.the 2 main hoses that supply the coolants to heat the carbs are one on the right side the other i think on the left but more inner.
try to post pics soon. not too gd at doing this...pic uploading