I recently replaced the blades on my Craftsman LT 1000 riding mower 42'' cut hoping it would fix my problem. It did not. When I mow it leaves a row of unmowed grass down the middle. What is the problem?
THE answer that FINALLY worked for me. Torque the bolt that holds on the blade to the recommended torque specified in your owners manual (for my Exmark this torque is 120 ft-lbs). When I first used the torque wrench, i was quite surprised by the amount of addional force I needed to apply to reach 120 ft-lbs Exmark blades have a round blade hole with a washer and therefore, relies only on friction provided by torquing bolt to the proper torque to prevent slippage so that the blade rotates at the same speed as the spindle. When slippage between the blade and spindle occurs, blade tip speed slows leaving uncut grass.
Note: this solution will NOT work for mowers with a blade and spindle design which uses a positive means (e.g., a star shaped hole on the blade) that assures the blade rotates at the same speed as the spindle with no slippage.
Mowing too fast for the blade speed. Use higher engine speed or lower gear.
One or both blades too short?
1,988 views
Usually answered in minutes!
×