I have a Toro ZTR riding lawnmower. The idler pulley recently went out and I lost forward and reverse while cutting grass. I got the new pulley and replaced it. I put the belt back in place and started the mower. It started, but still no forward or reverse. Put it up for the day and revisited the issue, and now it won't start at all. Got gas, fire and compression, but the motor will not start. I have also checked fuses and wiring. Any suggestions? Thanks in advance!