No. Even though the manual says you need to have every generator grounded no one does and nobody has any problems. If you mount it to a vehicle or a trailer I would ground it to the vehicle or the trailer if that's where it's going to stay but if you're keeping it on its Wheels you don't need to ground it.
Did you have to ground the generator I don’t wanna end up electrocuting myself after welding
No. Even though the manual says you need to have every generator grounded no one does and nobody has any problems. If you mount it to a vehicle or a trailer I would ground it to the vehicle or the trailer if that's where it's going to stay but if you're keeping it on its Wheels you don't need to ground it.