Service Manual: 162fmj Engine

: 4-stroke, single cylinder, air-cooled OHV (push rod). Bore x Stroke : Displacement : Approximately Compression Ratio : Valve Clearance (Cold) : for both intake and exhaust. Idle Speed : Maintenance Essentials

| 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 | 162fmj Engine Service Manual