YAMAHA 200HP AETX 2/STROKE

Core Engine Specifications
All primary specs come directly from Yamaha’s official 2‑stroke data.

Engine Type: 90° V6

Displacement: 2596 cm³

Bore x Stroke: 90.0 mm × 68.0 mm

Maximum Output: 147.1 kW (200 HP) @ 5000 rpm

Fuel Induction: Carbureted (triple carb setup)

Lubrication: Pre‑mix fuel & oil (no oil‑injection system)

2. Shaft Length & Model Code
AETX =

AET → 200HP 2‑stroke series

X → Extra‑long shaft (25")

Transom Height:

X‑shaft: 642 mm (25.3")

This makes the AETX suitable for offshore hulls, deep‑V boats, and heavier RIBs.

3. Weight
Dry Weight: 178–186 kg depending on configuration

This is extremely light for a 200HP engine — a major reason these motors remain popular.

4. Starting, Controls & Tilt
Starting: Electric start

Controls: Remote control (side‑mount or binnacle)

Tilt System: Power Trim & Tilt (PTT)

5. Key Features & Advantages
From Yamaha’s 200AET product descriptions:

Lightweight & compact V6 for excellent acceleration and hole‑shot performance

Shallow‑water drive capability for river and estuary use

Hard‑chrome‑plated water pump for durability in muddy or sandy water (important in WA)

Reliable carbureted design — simple to maintain, easy to service

6. Performance Characteristics
Strong mid‑range torque

Classic 2‑stroke “snap” acceleration

Lighter than modern 4‑strokes → better power‑to‑weight ratio

Ideal for:

Offshore fishing boats

RIBs 5.5–7.5 m

Older hulls designed for 2‑stroke weight

High‑performance ski boats

7. Fuel & Oil
Fuel: Unleaded petrol

Oil: Pre‑mix (typically 50:1)

Fuel consumption: Higher than modern 4‑strokes, but predictable and easy to tune Read more