152fmh Engine Service Manual |top| Jun 2026

If you download the , print this page and tape it to your tool box:

If the engine is loud or hard to start, the valve clearances likely need adjustment. 152fmh engine service manual

The Ultimate 152FMH Engine Service Manual & Maintenance Guide If you download the , print this page

When installing new rings onto the piston, stagger the ring gaps 120 degrees apart so they do not align. Ensure any stamped markings (e.g., "T" or size marks) face upward toward the piston crown. Before turning wrenches, verify your engine code

Before turning wrenches, verify your engine code. The designation breaks down via standard Chinese motorcycle engine nomenclature: 1 : Single cylinder 52 : 52.4mm cylinder bore F : Natural air cooling M : Motorcycle/powersports application H : 110cc nominal capacity class Core Technical Data Specification Engine Type 4-Stroke, Single Cylinder, SOHC, 2-Valve Displacement 107cc / 110cc nominal Bore x Stroke 52.4 mm x 49.5 mm Compression Ratio 9.0:1 to 9.7:1 Cooling System Forced Air Ignition Type CDI (Capacitor Discharge Ignition) Spark Plug NGK C7HSA or Torch A7TC (Gap: 0.6mm – 0.7mm) Clutch Type Wet multi-plate (Automatic centrifugal or Manual) Lubrication Pressure/Splash, Wet Sump Oil Capacity 0.8 Liters (0.85 US qt) Recommended Oil 10W-40 4-Stroke Motorcycle Oil (JASO MA2) 2. Periodic Maintenance Schedule

Remove the timing inspection cap on top of the left crankcase cover and the large stator center cap.

Change the factory shipping oil immediately before running. Change it again after the first 5 hours of operation to flush manufacturing debris.