got an old merc 400, i believe it is a 1970 model. anyways it came on a free boat. i tried to pull the rope to see if it turned and motor would not spin. didnt know if i needed to find the neutral spot or if the motor is locked up. not sure if it is in neutral b/c the throttle cables were cut. the wiring harness right inside the motor from the control box is burnt up also. (looks like every wire melted) i have a wiring diagram but it doesnt do me good to fix if motor is locked. any ideas or advise would be helpful! thanks