If your Worx lawn mower is not self-propelling, the problem is usually in the drive system, not the engine. The most common cause is a worn or broken V-belt, since the belt turns the drive pulleys that power the wheels. Next, check the drive pulley itself. If it is damaged or worn, the transmission may not engage the wheel assembly. Worn gears in the wheel assembly are another common reason a self-propelled mower is not pulling or the drive wheels are not turning. If those parts look good, watch the transmission while the mower is running. If the transmission pulley spins but the wheels do not move, the transmission or transmission assembly has failed and will need to be replaced. A misadjusted or sticking traction control cable can also cause a lawn mower drive belt problem symptom, especially if the cable does not move freely. A little oil may help, but if not, replace the cable. For the right fit, enter your model number on RepairClinic.com to find the exact Worx V-belt, drive pulley, wheel assembly, transmission, or traction control cable for your mower.
01 - Worx 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.
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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.