Only have to install the wheels, connect the battery, add the oil/gas and start right up. Start to finish this process took less than 10 minutes to complete. Started on the first try. Purchased primarily as a backup for power outages. Has all the power I will need and it's relatively quiet compared to similar units I have used.
Have had the unit for 2 months and based on tests I really like the product. Have not yet gotten the manual start to work and the auto start takes 2-3 times before engine turns over. Overall pleased with purchase.