F25DMHS, F25DMHL & F25DEL Yamaha Outboards

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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