A PTO (Power Take-Off) clutch is used when you want to engage/disengage power from the engine without shutting it off. Most small industrial engines don’t have that built in, so you add a PTO clutch externally.

Engines that commonly use a PTO clutch

Almost all small engines used in outdoor power equipment can (and often do) use PTO clutches, including:

Briggs & Stratton、Kohler、Kawasaki，Honda (GX series)，Predator (Harbor Freight),Tecumseh (older), Subaru / Robin

Typical machines that require a PTO clutch

Lawn tractors & zero-turn mowers

Go-karts & minibikes

Tillers

Snow blowers

Wood chippers

Agricultural or industrial equipment