No forward or reverse,

[wellcraftv20step]

A week ago I changed the water pump on my Yamaha, today I started her up for the first time since doing the water pump and found that I have no forward or reverse... obviously I did something wrong when I reinstalled the lower unit. Someone told me that the shift should be in neutral when removing the lower unit, I remember having to put my Mercruiser in forward whenever dropping the lower unit