If the engine lacks compression or smokes excessively, a top-end rebuild is required.
The 1P54FMI uses a wet multiplate clutch. lifan 1p54fmi service manual
: While there is rarely a single "shop manual" just for the 1P54FMI, the LF125-26C Service Manual covers the structure, maintenance, and repair procedures common to Lifan's 125cc 4-stroke line. Core Technical Specifications LF125-26C service manual EU V - Lifan Motorcycle If the engine lacks compression or smokes excessively,