If your Craftsman lawn mower is not self-propelling, the problem is usually in the drive system, not the engine. On a self-propelled mower not pulling, start with the most common cause, a worn or broken V-belt. If the belt cannot rotate the drive pulleys, the mower drive wheels will not turn. Next, check the drive pulley itself. A damaged pulley can keep the transmission from engaging the wheel assembly. After that, inspect the wheel assembly gears, since worn gears can prevent the transmission drive gear from grabbing the wheels. If the pulley is spinning while the mower is running but the wheels still do not move, the transmission or transmission assembly has likely failed and will need to be replaced. A mower traction cable problem is less common, but a broken or misadjusted traction control cable can also keep a lawn mower from self-propelling. RepairClinic.com makes it easier to track down the exact cause and fix a lawn mower drive belt problem fast. Enter your model number on RepairClinic.com to find the exact Craftsman V-belt, drive pulley, wheel assembly, transmission, or traction control cable that fits your mower.
01 - Craftsman Lawn Mower V-Belt
The V-belt rotates the drive pulleys to drive the lawn mower wheels. If the V-belt is worn out or broken, the lawn mower wheels won’t turn. Inspect the V-belt for damage. If the V-belt is defective, replace it.
Enter model number to search for the required part specific to your product
The drive pulley connects to the engine crankshaft. If the drive pulley is worn out or broken, the transmission won’t be able to engage the wheel assembly. Inspect the drive pulley for damage. If the drive pulley is defective, replace it.
The wheel assembly has a set of gears which engage with the transmission drive gear. If the gears are worn out, the transmission won’t be able to engage the wheel assembly. If the gears are worn out, replace the wheel assembly.
The transmission is powered by the drive belt, and the drive belt connects to the engine crankshaft. When the drive belt powers the transmission, the lawn mower wheels turn. To determine if the transmission is defective, observe the transmission while the lawn mower is running. If the transmission pulley is spinning, but the lawn mower wheels don’t turn, this indicates that the transmission is defective. The transmission is not repairable—if the transmission is defective, you must replace it.
The transmission is powered by the drive belt, and the drive belt connects to the engine crankshaft. When the drive belt powers the transmission, the lawn mower wheels turn. To determine if the transmission is defective, check the transmission while the lawn mower is running. If the transmission pulley is spinning, but the lawn mower wheels don’t turn, this indicates that the transmission is defective. The transmission is not repairable—if the transmission is defective, you must replace it.
The traction control cable might be broken or misadjusted. Check the traction control cable to determine if it moves freely. If the control cable does not move freely, try squirting a small amount of oil into the end of the cable to lubricate it. If lubricating the traction control cable is not effective, replace it.