If your Exmark lawn mower is not self propelling, start with the parts that most often stop the drive wheels from turning. A worn or broken V-belt is the most common cause of a self-propelled mower not pulling, since the belt drives the pulleys that move the wheels. Next, check the drive pulley for wear or damage, then inspect the wheel assembly gears. 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, since it is not repairable. A misadjusted or sticking traction control cable is less common, but it can also cause a mower drive problem, especially if the cable does not move freely. For an Exmark mower with drive wheels not turning, checking these parts in order can save time and point you to the right fix faster. Enter your model number on RepairClinic.com to find the exact Exmark V-belt, drive pulley, wheel assembly, transmission, transmission assembly, or traction control cable for your mower.
01 - Exmark 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.