Lifan 1p54fmi Service Manual -

: While for a specific bike model (LF125-26C), the engine maintenance sections cover standard 125cc horizontal engine procedures applicable to the 1P54FMI. Technical Specifications Specification Engine Type 4-Stroke single-cylinder OHC, air-cooled Displacement Bore x Stroke 54mm x 54mm Compression Ratio Oil Capacity 0.9L (900ml) Recommended Oil 15W/40-SE or 10W/40 (Motorcycle specific) Spark Plug A7TC or NGK C6HSA Spark Plug Gap 0.6mm – 0.8mm (0.028") Valve Clearance ~0.10mm - 0.15mm (Cold) Idle Speed 1,500 RPM ± 100 Key Maintenance Tasks Oil Changes

If you ever split the cases to fix a transmission issue, the shift drum and fork arrangement is complex. The manual provides exploded diagrams showing which fork goes into which groove. lifan 1p54fmi service manual