A riding mower's transaxle takes a beating that most owners never think about until it fails. It handles the combined stress of hydraulic drive, ground speed changes, and the weight of the mower itself moving over uneven turf.

Hydro Gear units are among the most common OEM transaxles found on residential and light commercial mowers, and when one starts leaking fluid or losing drive power, a lot of owners assume the whole mower is finished. In many cases, though, the transaxle itself can be replaced or rebuilt without touching the engine or deck at all.

Matching the replacement unit to the original specification matters more than people realize. A detailed breakdown of one popular replacement option is covered in this Hydro Gear EZT transaxle review.

Regular fluid checks and avoiding prolonged uphill mowing at full throttle both go a long way toward extending transaxle life before a replacement is ever needed.