Re: Engine weight
If you turn the steering wheelall the way left, the cable will retract, giving you the best chance of getting it out of the tilt tube. If you need to slide the motor sideways, be careful as you only have a small lip "hooking" the transom. If you have a reliable friend, he/she can hold the powerhead when you push it sideways on the transom. Blocking up the antiventilation plate will help a lot.
BTW - If the steering cable binds up in the tilt tube and with the big nut loose (as you have it in the pic), the steering wheel turns freely, the cable is likely good and the tilt tube is corroded to the steering cable end. In that case, turn the wheel right and clean the steering cable end until it moves freely. Use some solvent to clean it up, and then regrease.