My lawn mower runs but cuts off when engaging the blade

I have a craftsman riding mower and it idle’s up and down, then when you try to engage the blade it cuts off I have changed spark plugs, cleaned the blades, and checked the belt, all is fine

I need some suggestions on what I should check next I was going to check to see if the fuel solenoid is bad that it's not getting enough fuel to operate the blade but not sure

Please help thanks and God bless