In Stock
Suzuki 25 Hp 2 stroke
- ISPM 15 heat-treated Euro palletized & weatherproof shrink-wrapped
- Insured European road freight delivery with hydraulic tail-lift service
- Dispatches in 1–2 business days from our UK & European Logistics Centre
- Transit typically 1–3 business days (UK) / 3–6 business days (Continental Europe)
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
Suzuki's 25 HP two-stroke, model DF25AS4, is a tiller-steered motor with a 15-inch short shaft, manual start and manual trim and tilt. It weighs 136.0 lb and is rated for saltwater use.
Specs worth knowing
- 25 HP from a 3-cylinder, 489 cc (29.8 cubic inch) block, bore and stroke 2.80 by 2.68 inches
- Electronic fuel injection rather than a carburetor
- A full-throttle band of 5000 to 6000 rpm
- A 2.09 to 1 gear ratio, shifted forward-neutral-reverse by a front-mounted lever
- A three-blade aluminum propeller, 10.25 inch diameter by 10 inch pitch
Who it suits
A short 15-inch shaft and tiller steering point this motor at smaller aluminum boats, jon boats and inflatables, where the operator sits close to the transom and runs the throttle by hand rather than from a console. Starting and trim are both manual here, which keeps the motor simpler and lighter than an electric-start, power-trim version at the same horsepower.
Fuel and care
This engine draws from an external fuel tank rather than one built into the cowling, and it is rated for salt water use, so freshwater flushing after a trip is worth building into your routine. At 136.0 lb, one person can lift it on and off a transom without extra gear.
Does it have a built-in or external fuel tank? External. Is it saltwater rated? Yes.
Specifications
| MODEL | DF25AS4 |
|---|---|
| SKU | DF25AS4-22 |
| WEIGHT | 136.0 lb |
| MANUFACTURER | Suzuki |
| COUNTRY OF MANUFACTURE | Thailand |
| HORSEPOWER | 25hp |
| SHAFT LENGTH | 15″ (Short) |
| STEERING | Tiller |
| STARTING | Manual |
| TRIM & TILT | Manual |
| FUEL DELIVERY | EFI |
| FUEL TANK | External |
| CYLINDER(S) | 3 |
| DISPLACEMENT | 29.8 (489) |
| BORE AND STROKE | 2.80 x 2.68 () |
| FULL THROTTLE RPM RANGE | 5000-6000 |
| IGNITION SYSTEM | Digital CDI |
| INDUCTION SCAVENGING | SOHC |
| VALVES PER CYLINDER | 4 |
| FUEL TYPE | Unleaded Gasoline (87 octane) |
| FUEL TANK / FUEL LINE | Yes |
| OIL TYPE | SAE 10W-30 or SAE 10W-40 |
| OIL CAPACITY | 1.6 (1.5) |
| LUBRICATION | Wet Sump; Trochoid Type Cam-Driven Oil Pump |
| ALTERNATOR | 12V 145W 12A (OPTIONAL) |
| COOLING SYSTEM | Water-Cooled |
| SALTWATER RATED | Yes |
| GEAR RATIO | 2.09:1 |
| GEAR SHIFT | Forward-Neutral-Reverse (front-mounted lever) |
| PROPELLER | 3 x 10.25 x 10 |
| INTERNAL BATTERY | No |
Startup & Installation Checklist
- Inspect all external gaskets, seals, spark plugs and timing components prior to installation.
- Refill engine oil, transmission gear oil and coolant to manufacturer-specified capacities before initial cranking.
- Prime the lubrication system and verify ECU wiring pinouts, sensors, and ground connections.
- Startup warranty covers internal lubricated components, cylinder heads, and engine block for 30 days from delivery.
Full terms: 30-day startup warranty · returns