1) Drain the machine fully - (open the pump filter)
2) Remove all fill hoses.
3) Re-install transit bolts / braces.
4) Transport the machine using a hand-truck slid under the machine at the back (or as instructed on the machine's casing) The hand truck should have a long pallet to avoid damaging the internal components as the bottom of washing machines is usually open.
5) Place a thick blanket or duvet over the front of the machine when it is being transported in a truck/van to avoid damaging the decorative front / paint work.
NB: NEVER put a front loader on its side, back, or anything other than upright. The drum is mounted on springs hung from the top. If you put it on its side you will strain these, or in extreme circumstances the drum may even come loose! e.g. if you put the machine upside down.
You also risk allowing water to leak from the machine into electrical / electronic components if the machine is not on its feet.
In general, there is no problem transporting these machines provided they're upright.
If you don't have the transport bolts/braces, just move it gently and don't drive aggressively over bumps.
I cannot stress how important it is to keep the machine upright at all times.