Hello, I replaced my impeller last night. The motor ran and shifted fine before the repair. Upon reassembly, I could not get the motor to shift out of forward. I re-removed the lower unit and tried to manually shift it by moving the shift shaft up and down. It will not move at all even when manually turning the propeller left and right. I replaced the lower unit oil which was clean without water or metal shavings. There must be something mechanical that I tripped which has frozen the shifter. I appreciate any advice. Jerry
