162fmj Engine Service - Manual
Align the "T" mark on the flywheel with the stationary index mark. The manual provides a clear photo—if you align the "F" mark, your ignition timing will be off. On the 162FMJ, both valves should be loose at TDC of the compression stroke.
Disassembly of the two-piece crankcase. The manual warns against prying the cases apart—they are sealed with anaerobic gasket maker (like Threebond 1184). You must use a rubber mallet and specialized pullers. 162fmj Engine Service Manual
Finding the exact manual can be tricky because many manufacturers (Loncin, Zongshen, Ducar, YX) use the 162FMJ block but produce their own variants. Align the "T" mark on the flywheel with
| Parameter | Value |
|-----------|-------|
| Displacement | ~124–125 cc |
| Bore × Stroke | 62 × 49.5 mm (common) or 62 × 52.9 mm |
| Compression ratio | 9.0:1 to 9.5:1 |
| Valve clearance (cold) | 0.05 mm (IN) / 0.08 mm (EX) |
| Spark plug | A7TC (NGK C7HSA) — 0.6–0.7 mm gap |
| Oil capacity | 0.9–1.0 L (10W-40 or 15W-40) |
| Idle speed | 1400–1500 RPM |
| Primary kick start + electric start | Yes |
| Transmission | 4-speed (N-1-2-3-4) semi-auto or manual | Using the manual's feeler gauge spec, slide the
Using the manual's feeler gauge spec, slide the gauge between the valve stem and rocker arm. Loosen the locknut, turn the adjuster screw until you feel slight drag, tighten the locknut, and re-check. The manual emphasizes "Cold engine only."
Lifan manuals are available for download from sites like:
