1. Mechanism: The assembly uses a mechanism to store and release energy for engine starting. Pulling the rope rotates a pulley connected to springs. Upon release, the springs unwind, rapidly rotating the crankshaft to start combustion. 2. Compatibility: The assembly with pull rope is designed to be compatible with Champn 2500W Inverter Generator Model 201122. It is also compatible with Westinghouse 1800 rated 2200 peak watts 79cc WH2200iXLT super quiet inverter generator. 3. Replaces Part Numbers: 1000750510001 recoil starter. Compatible with Westinghouse 2100 rated 2400 peak watts 79cc WH2400i super quiet gas powered inverter generator. Please make sure it matches correctly before purchase. 4. Construction: The assembly is made of quality materials to ensure durability and longevity. It is designed to withstand the repeated pulling and releasing of the pull rope, as well as the vibrations and stresses associated with starting the engine.