u have yamaha f15 , its 2011 year... i know its same block as 20hp , but whats the diference ? us it only the carburetor or a camshaft too , or is it somthing other ...pls help
numbers are not the same for carb and camshaft, but when i looked two cams in my hand , from 15 and 9.9 ,they look same , size , angles....thats why i am confused