62.0 mm × 49.5 mm (hence the designation "62" in 162FMJ). Compression Ratio: 9.0:1 to 9.2:1 Cooling System: Natural air-cooled.
Regular maintenance prevents premature wear on pushrods, valves, and transmission gears. Follow these intervals closely. Oil Change and Screen Cleaning
Wash the mesh screen with brake cleaner to remove metallic shavings and debris. Blow it dry with compressed air.
Drain from the left-side bottom plug; clean the reusable oil screen located behind the large cap on the right bottom. 162fmj Engine Service Manual
Regular maintenance is crucial for the longevity of pushrod engines.
The 162FMJ does not feature a disposable paper oil filter. Instead, it relies on a reusable internal wire mesh strainer and a centrifugal oil filter unit.
Remove the timing inspection cap and the crankshaft access cap on the left-side engine cover. Follow these intervals closely
Use a feeler gauge to measure clearance between the rocker arm and valve tip. Intake Valve: Exhaust Valve:
The 162FMJ engine, a 150cc single-cylinder, air-cooled four-stroke overhead valve (OHV) powerhouse, is a staple of the "CG" engine family. Known for its remarkable durability and simplicity, it powers millions of commuter motorcycles and utility vehicles worldwide. However, even the most robust machinery requires precise maintenance. The service manual for the 162FMJ serves as the definitive roadmap for technicians and hobbyists, bridging the gap between mechanical intuition and manufacturer-specified precision. The Role of Technical Specifications
She opened the manual to a chapter she had dismissed as myth: “The Engine-Borne Plague and the Ritual of Decarbonization.” Drain from the left-side bottom plug; clean the
8.2kW to 10kW (approx. 11–13.6 PS) at 8500–9500 RPM. Ignition Type: CDI (Capacitor Discharge Ignition).
Preventative maintenance prolongs the lifespan of the pushrod design. Follow these intervals closely.
5-Speed Constant Mesh (1-N-2-3-4-5 or All-Up/All-Down depending on application) Starter System: Kick and/or Electric Starter 2. Routine Maintenance Schedule
Annually, or if the machine has been sitting. 3. Detailed Service Procedures A. Oil Change Procedure