162fmj Engine Service Manual [upd] Jun 2026

Remove the four cylinder head nuts and two side bolts. Lift the cylinder head away from the cylinder block.

Guiding the user through the removal of the cylinder head, inspection of the piston, and the critical process of "timing" the engine—ensuring the piston and valves are perfectly synchronized. Promoting Safety and Longevity

Wipe out the thick, packed sludge collected against the inner walls of the drum using a clean shop rag. Do not scratch the inside surface.

Turn clockwise until lightly seated, then back out

Single-cylinder, 4-stroke, air-cooled, OHV (Pushrod). Displacement: 149.4cc 162fmj Engine Service Manual

: "My 150cc 162FMJ engine is burning oil."

The is a staple in the world of 150cc motorcycles, pit bikes, and light utility vehicles . Often manufactured by brands like Zongshen , Lifan , and Shineray , this air-cooled, four-stroke, single-cylinder engine is prized for its simple overhead valve (OHV) design and remarkable durability.

Take off the cylinder head cover (rocker cover), the timing inspection plug, and the crankshaft rotation plug from the left crankcase cover.

suggest changing the oil every 1,000 km or 3 months for optimal lifespan. 2. Valve Adjustment Valve Clearance: 0.05 mm for both intake and exhaust valves. Adjustment must be performed when the engine is Remove the four cylinder head nuts and two side bolts

Check primary resistance (0.2–0.7 ohms) and secondary resistance with the spark plug cap removed (3k–5k ohms). 5. Top End Overhaul Guide (Piston & Valves)

: Drain and refill (more often in dusty/severe conditions). Every 1,500 km Inspect and clean air filter (replace if paper-type). Every 3,000 km Valve Clearance Check : Inspect and adjust tappets. Every 5,000 km Inspect/replace spark plug and check fuel lines. 3. Lubrication & Oil Change

Every 500-1,000 km (300-600 miles) or every 3 months. Use high-quality 10W-40 or 15W-40 motorcycle-specific oil.

Regular maintenance is crucial for a 162FMJ engine, particularly because it relies on splash lubrication and air cooling. Every (use 10W-40 or 15W-40 motorcycle oil). Valve Clearance Check: Every Spark Plug: Clean and adjust every ; replace every Air Filter: Clean every (sooner in dusty conditions). Idle Speed: 3. Detailed Service Procedures A. Valve Clearance Adjustment (OHV) Promoting Safety and Longevity Wipe out the thick,

When performing repairs, use these torque values to prevent damaging the aluminum engine housings: Alibaba.com 162FMJ Engine Parts Catalogue | PDF - Scribd

The Ultimate Guide to the 162FMJ Engine Service Manual: Maintenance, Repairs, and Troubleshooting

: Change every 1,000 km or 50 hours of operation. Capacity is typically Air Filter

Re-adjust intake and exhaust valve clearances to spec. Inspect pushrod tips for pitting or flat spots. Issue 2: Engine Crankcase Smokes and Loses Power