Remove the carburetor, exhaust pipe, and pushrod covers.
Always install a brand-new cylinder base gasket and a steel cylinder head gasket. Never reuse old gaskets or rely solely on silicone sealant here. 6. Troubleshooting Common Engine Issues Potential Cause Remedial Action Engine will not start (Has Spark/Fuel) Zero valve clearance; stuck open pushrod Adjust valve clearance to 0.05mm/0.08mm. Loud metallic ticking from top end Excessive valve-to-rocker gap Re-adjust valves; inspect pushrods for straightness. Engine bogs under acceleration Clogged main jet; air leak at intake boot Clean carburetor jets; replace intake O-ring. Blue smoke from exhaust Worn piston rings; failing valve stem seals Replace piston rings and install new valve stem seals. Clutch slips under load Worn friction plates; incorrect oil used Replace clutch plates; switch to JASO MA 4T oil.
Before turning any wrenches, understand the core specifications of the 162FMJ engine. Keep these measurements and torque limits handy during reassembly. Engine Architecture
Tomorrow, the truck needed a valve adjustment. And according to page 47, that required a song. 162fmj Engine Service Manual
After a crash or a seized bearing, you need to check the crankshaft. The manual states maximum allowable runout (typically less than 0.05mm).
It looks like you’re referencing a engine — a common horizontal single-cylinder, air-cooled, 4-stroke engine found in many Chinese-made pit bikes, ATVs, go-karts, and small utility motorcycles (e.g., Lifan, Zongshen, Loncin).
: Slide a feeler gauge between the valve stem and the rocker adjusting screw. Intake Clearance : 0.05 mm Exhaust Clearance : 0.07 mm Remove the carburetor, exhaust pipe, and pushrod covers
: This section usually provides an overview of the engine, including its design features, technical specifications, and application areas.
Place a drain pan beneath it and remove the plug. Be careful, as a spring and a thimble-shaped wire mesh screen will drop out.
: Some technical libraries or bookstores might carry a copy of the manual or be able to order it for you. Engine bogs under acceleration Clogged main jet; air
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."
9.0:1 or 9.2:1 (depending on factory variant). Performance and Electrical Maximum Power: ~11.5 HP (8.5 kW) @ 8,500 RPM Maximum Torque: ~10.0 Nm @ 7,500 RPM Idling Speed: 1,400 RPM ± 100 RPM Spark Plug: NGK D8TC or D8EA (Gap: 0.6 mm to 0.7 mm) Ignition Type: CDI (Capacitor Discharge Ignition) Capacities and Fluid Limits