Operator stated the boat was backed into the water, his wife, 3 children and another adult were in the boat when he attempted to start the boat. When he turned the ignition key into the start position, there was a loud explosion and fire blew out the area from the engine compartment in the stern of the boat. 
	 i asked operator if he had used the blower on the boat and he state he did for about for about 30 seconds. Operator stated all the persons got out of the boat before he attempted to put the fire out using 2 fire extinguishers. He was unsuccessful in his attempts and he abandoned the boat as it drifted downstream. Operator state the only injuries were to this wife's legs which was described as first degree burns. She was treated on the scene but refused other medical treatment for her injuries.
Evansville