My Sears Craftsman LT 3000 was being used for the first time this year (its second mowing season). The blade quit turning in the middle of me mowing my yard. I didn't hit anything or run over anything and the grass was not in a tall area. I have tried to engage it several times but it does not respond. The wire cable (it reminds me of the kind of cable in bicycle brakes) catches but nothing else happens. Is there a schematic online that would show if something became unhooked under the hood. Is there a fuse for this that would have blown? The mower turns off if I stand up while it is running so I know that part is still responding normally. The belts all seem to be fine. I only had it a couple of days last year when the mower deck fell off due to it not being completely put together at the factory so I'm wondering if something wasn't put together tight enough. Wondering if anyone else had a problem like this. I had to buy a front roller for it last year because it kept scalping my yard. This new experience isn't making me a fan of my LT 3000. Thanks for your help.

LT 3000 probably won't cut it as the model number, but try www3.sears.com

It could be a relay gone bad.