When i mlve the hand level. Up for the blades to start cutting i get noting its my husqvana riding mower yth 20k46

SOURCE: craftsman 42" riding lawn mower blade free spinning but wont cut

It sounds to me that you need a new mower deck drive belt, or your blades need sharpening. If the blade edges are rounded, they won't cut butter... Also, when mower is off, check mower deck drive pulleys to make sure you don't have any that are locked up or are dragging. You can check this by pulling the belt away from pulley and spinning the pulley by hand. MOWER MUST BE OFF before attempting any of these checks. You would be surprised how many people would try this with the mower running.
Hope this helps

SOURCE: I have a craftman 42 in dual blade riding mower.

Either the deck is uneven or one of the blades are upside down

SOURCE: Craftsman 18.5 riding mower when I engage the

craftsman decks have a positive stop adjustment for the decks. A spring atached to the blade ingadgement arm pulls the tension pully into position if the cable is rusted inside the sleeve it wont put enough pull on the ingadgment pully and thus the blades dont spin full force the belts on the mowers have no adjustments only the pully . second thing is you may want to drop the deck and clean around that pully by scraping any rust off the surface under the pullys slide good luck

SOURCE: engine cuts out when engaging clutch or engaging blades..

lift the seat and make sure the connector is firmly plugged into the seat switch

SOURCE: mtd riding mower: right mower blade cutting

The blade can be bent or the deck is not level. Adjust the deck and level it from side to side. Now level it from front to rear with the front of the deck 1/4" lower than the back. If after leveling it, you find it still cuts uneven remove all blades and inspect them. You will more than likely find one is bent. Replace a bent blade.