It is important to note that the 152FMH is produced by several different manufacturers in China, including Loncin, Lifan, Zongshen, and others. This means there can be slight variations in specifications, power output, and component design. However, as they all share the same basic CG125 lineage, most parts and procedures are interchangeable.
A single, official service manual for the generic 152FMH engine is difficult to find online. The engine is produced by various Chinese OEMs (e.g., Loncin, Lifan), and while some companies may have internal documents, a universal publication is not readily available.
Uses a reusable oil strainer located inside the right crankcase cover rather than a replaceable paper filter. 📏 Valve Clearances (Cold) MANUAL # 3598
Maintaining the correct valve clearance is critical for engine performance and starting ease. Intake and exhaust valves can tighten over time, leading to hard starting and a loss of power. To adjust:
2 Valves (1 Intake, 1 Exhaust) driven by an overhead camshaft
This PDF is a lifesaver if you are trying to: ✅ Adjust valve clearance ✅ Rebuild the top end ✅ Sort out the clutch
4-speed semi-automatic (no clutch lever) or 4-speed manual Ignition: CDI (Capacitor Discharge Ignition) Spark Plug: NGK CR7HSA or C7HSA (or equivalents) 2. Fluid and Lubrication Specifications
Use a #17 spanner to remove the bottom drain bolt. Refill with roughly 800ml of motorcycle-specific 10W-40 oil. Oil Filter: This engine uses a permanent internal mesh strainer rather than a disposable canister filter. Spark Plug: The standard gap is typically Valve Clearance: Essential for smooth idling. Common settings are for both intake and exhaust, though some tuners prefer for the exhaust to prevent heat-related tight valves. Common Torque Specs & Parts
Remove the right-side crankcase access plug to clean the internal oil mesh screen filter.
Clean or replace the air filter regularly, especially if riding in dusty conditions.
The 152FMH is a three-cylinder, 1.5 L Ford/Mazda-derived diesel used in some compact tractors and industrial equipment. A notable/interesting feature: it uses a mechanically governed indirect-injection (IDI) combustion system with a pre-combustion chamber — this gives smoother cold-start behavior and quieter operation compared with direct-injection diesels of similar size. Other practical service-relevant features:
