I accidently posted this in auto so here i go again. The cooling system on that machine is very long and air can get trapped in a number of places. I am working on a kawasaki mule 3010 with the fd620d motor.
Kawasaki Mule 3010 Parts Diagram Diagram Kawasaki Mule Kawasaki
Kawasaki Fd680v Fd731v 4 Stroke Liquid Cooled V Twin Gasoline
Kawasaki Mule 3010 Trans Drink Holder Utv Cupholder S Izobrazheniyami