Blades won't spin I replaced blade on and off switch but they still don't turn the belt still looks good

With the mower turned OFF check the blades to see if they aren't bent and if it spins freely. There should be resistance when you hand turn the blades. A bent blade can jam and lock up the drive system. If the blade spins freely and has no resistance check the drive belts from the blade pulley to the gears that run the blades. Hopefully you have just had a drive belt come loose or break, a reasonably cheap and easy fix. If the belts are OK you will need a mower mechanic to look at the gearing for the blades.

you've routed the belt incorrectly.

Your belt may be on wrong or slipping.

On the top of the mower deck, there is a spring that will pull to disengage the blade idler pulley. At the same time, it will release two springloaded arms with brakes that press on the pulleys at the top of the blade spindles. On top of the mower deck at the back, the two spring loaded arms may be held out of the braking position by a cam. Make sure the cam is free to allow the blade brakes to activate when you disengage the blades. If arms are out of alignment, or the parts are too worn, the blade brakes won't move and the blades keep spinning, even after you have disengaged and the safety switch is deactivated. This is a dangerous situation and should be fixed soon. Good luck.

This sounds strange. Is there a clutch or belt that turns the blades.

check for power and ground at the connector that feeds the clutch this will tell you if its a switch or the clutch itself

Most all riders have a safety seat switch now and they do malfuction alot. They are under the seat and are ez to replace most of the time. First look for a wire that is grounding due to rubbing a sharp object. That can be fixed with black tape

Good luck!!!

check electric clutch on mower deck

Sometimes the belt can jump off one pulley and cause the problem,follow the belt around all the pulleys and see if it came off one.there may be a belt loosening lever on the lh side of the mower deck, if so unlock it and reroute the belt around the pulley. If you need to replace the belt the manual has a good description on how to do it and should take 30 min with only a couple of tools.

If you got the right oem belt,ta\han you can look at the end where the cable attachs to spring and you should see a double nut adjustment loosen nuts and adjust to put more tension on the belt when you put lever into gear for blades to turn then retighten them .