Abstract: Employee #1 was servicing the high pressure wash system, Roto Jet Pump, serial #77-7182. He properly locked out the motor at the disconnect box and at the panel. The motor was de-energized and the guard removed for servicing. After reassembling the components, Employee #1 tested the pump for "free wheeling" and spinning freely, by grabbing the U-belts. He did not remove his hand in time and the belt and pulley cut his finger off. The size of the motor (approximately 100 hp) and the inertia energy of the large components prevented the pump from stopping immediately when Employee #1 turned off the motor.