it would be possibly more productive if you provided some more info on what
engine you have.
I looked up "XT2" and it showed a lawnmower but no "fan belt"
just a conventional flywheel fan covered with fan shroud
and as far as using starting fluid, its not a good thing to do as it washes the lubricant off the cylinder walls/pistons, and causes detonation, neither are good for an engine
Better to use a squirt of gasoline.
Does the engine turn over and start/run once primed?