Engine Specifications – F25DMHS, F25DMHL & F25DEL
| Engine Type | SOHC, In-line 2 |
| Displacement | 498cm³ |
| Bore x Stroke | 65.0 x 75.0mm |
| Compression ratio | 9.4:1 |
| Starting enrichment | Prime Start |
| Fuel induction system | 1 Carburettor |
| Lubrication system | Wet sump |
| Engine oil capacity | 1.6L / 1.4L (with/without oil filter replacement) |
| Ignition system | CDI |
| Ignition timing | ATDC 8.0 – BTDC 20.0 deg. |
| Spark plug | DPR6EB-9 |
| Alternator | 14 A (battery charging: 13 A) |
| Cooling system | Raw-water, thermostatically controlled |
| Exhaust system | Through propeller boss |
| Dry weight | 77 – 86kg |
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