If you’re looking for a super-portable outboard for your dinghy, tender, or small inflatable, the 2004 Tohatsu 2.5hp and 3.5hp models are two of the lightest, easiest-to-own four-stroke engines ever made. Both are favorites among sailors, campers, and anyone needing a reliable backup or auxiliary engine. But what’s really different between the Tohatsu 2.5 vs 3.5 from this era—and which is right for your needs? Here’s a simple comparison to help you choose.
Quick Picks
- Best for Portability: Tohatsu 2.5hp 4-Stroke – Ultra-light, easy to lift and stow, ideal for dinghies and as a backup motor.
- Best for Power: Tohatsu 3.5hp 4-Stroke – A touch more thrust for loaded dinghies, small inflatables, or for getting on plane with lighter boats.
- Best Budget Pick: Tohatsu 2.5hp – Lower price, less fuel usage, and still gets most small boats moving easily.
Buyer’s Guide
Here’s what matters when deciding between the 2.5 and 3.5 Tohatsu from 2004:
- Weight: Both engines are very light, usually within 1–2 lbs of each other (about 28–29 lbs). Perfect for single-handed lifting and mounting.
- Size: Both use the same basic engine block and footprint. Dimensions, tiller, and mounting clamps are nearly identical.
- Starting: Both have easy manual start and a simple choke—no electric start option. Designed for effortless pull starts even after storage.
- Fuel System: Both have integrated fuel tanks (about 1 liter), with no external tank hookup. Carbureted, reliable, and simple.
- Power: The 3.5hp is just a higher-revving version of the 2.5hp, offering a little more thrust for pushing heavier loads or fighting a headwind.
- Maintenance: Both are easy to service with simple oil changes, spark plug, and fuel system upkeep. Parts are still widely available.
- Price: The 2.5hp is usually more affordable on the used market, but both are budget-friendly for a four-stroke.
Detailed Product Reviews
1. Tohatsu 2.5hp 4-Stroke (2004)
Who it’s for: Boaters who want the absolute lightest four-stroke outboard for short hops, tenders, or as an emergency backup.
- Key Benefits:
- Weighs just under 29 lbs—one of the lightest four-strokes of any size.
- Very low fuel consumption and easy to carry.
- Quiet operation and smooth idling for a portable engine.
- Pros:
- Simple, reliable, and starts on the first pull.
- Easy oil changes and straightforward maintenance.
- Ideal for short trips, sheltered waters, or small, light boats.
- Cons:
- Limited power for heavier dinghies or strong currents.
- No external fuel tank option (small built-in tank).
Final Verdict: The Tohatsu 2.5 is a favorite for sailors, campers, and anyone wanting “grab-and-go” simplicity. See used Tohatsu 2.5 listings
2. Tohatsu 3.5hp 4-Stroke (2004)
Who it’s for: Boaters who want a little extra push for the same light weight, or need more grunt with a loaded tender or in moderate current.
- Key Benefits:
- Nearly the same weight as the 2.5hp, but with a bigger carburetor and higher RPM limit for more thrust.
- Easy to start and maintain—same simple controls as the 2.5.
- Enough power to get small inflatables or car-top boats on plane (with one person and light load).
- Pros:
- All the lightness and reliability of the 2.5, with more muscle when you need it.
- Very low maintenance and parts still widely available.
- Still easy to carry, store, and use solo.
- Cons:
- Uses a bit more fuel than the 2.5hp (but still very frugal).
- No electric start or external tank option.
Final Verdict: The 3.5hp is the pick for anyone who might load up their dinghy, face current, or just want extra push with no extra weight. See used Tohatsu 3.5 listings
Comparison Table
| Name | Key Features | Specs / Weight | Price Link |
|---|---|---|---|
| Tohatsu 2.5hp 4-Stroke (2004) | Ultra-light, simple, low fuel use | 2.5hp, ~29 lbs, built-in tank | See used Tohatsu 2.5 listings |
| Tohatsu 3.5hp 4-Stroke (2004) | Lightweight, more thrust, same block | 3.5hp, ~29 lbs, built-in tank | See used Tohatsu 3.5 listings |
FAQ Section
- Q: Is there a real power difference?
A: Yes, the 3.5hp has a little more top-end thrust thanks to a larger carburetor and higher revs. Both will move small boats, but the 3.5 handles weight or wind a bit better. - Q: Is there a weight difference?
A: Virtually none—both are around 28–29 lbs and use the same base engine. - Q: Which is more reliable?
A: Both have the same proven reliability, easy starting, and simple service. - Q: What about fuel consumption?
A: The 2.5hp sips fuel a bit slower, but both are very efficient and can run for hours on a tank. - Q: Can I add an external tank?
A: No, both models from 2004 have a built-in tank only—no external fuel hookup.
Conclusion
Both the 2004 Tohatsu 2.5hp and 3.5hp four-strokes are superb portable engines, loved for light weight, reliability, and simple use. Choose the 2.5hp if you want the lightest, most fuel-efficient engine for short trips and light loads. Pick the 3.5hp if you want a little more power for heavier dinghies, bigger crews, or running in a breeze. Either way, you’ll enjoy years of easy starts and reliable trips on the water.