Quick verdict
At USD 239.16, the HANGKAI 2/4-Stroke outboard motor is a practical choice for small boats, available new in a range of power ratings from 3.5 to 7 HP. It is lightweight enough for a boat weighing 100 kg or less, but it has clear limitations in comfort and load performance.
Who it suits
This motor makes sense if you have a small tender, skiff, or fishing boat and you want a simple way to get it moving. It is a good match for trips that do not depend on carrying heavy loads. It is less ideal if you want a whisper-quiet outboard.
What stands out
The standout is the range of horsepower options in one motor family. The HANGKAI covers 3.5, 3.6, 4, 6, 6.5, and 7 HP, with the 4 HP 4-stroke configuration noted. It is a new outboard motor at USD 239.16, which gives a buyer multiple output choices without leaving the same model line.
Meaningful trade-offs
The operating cautions matter. You should not start the motor on land, and if water stops coming out of the unit, you need to stop it right away to avoid cylinder scoring. The noise is described as comparable to a motorcycle, which could be unpleasant in quiet settings. Speed also changes with load, so the motor will handle differently with one person versus four people on board.
Product note
HANGKAI 2/4-Stroke 3.5-7 HP Outboard Motor

A strong reason to choose this motor is its lightweight nature and small-boat suitability. The biggest compromise is its sensitivity to operating conditions and the number of people on board, so you need to plan your trips around its limits.
Bottom line
If you want a lightweight outboard for a small boat and you are comfortable following the running precautions, the HANGKAI 2/4-Stroke motor is worth a closer look. Keep expectations realistic, and follow the running precautions.