Hyundai HY4000SEi 4000w Inverter Generator

4 Reviews | Q&A

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Product Description

Hyundai HY4000SEi, 4000w Inverter Generator, 1 Year Warranty. The Hyundai HY4000SE generator set with petrol engine is designed to work in the most demanding conditions. It is a high performance tool to which any use can be applied, both professional machinery and more delicate electronic devices.

Its professional, compact design, with a panel with plastic protections, robust with high-resistance silencers and housings to reduce noise make this generator a very good choice. The 4000W Hyundai electric generator is designed for professional use and individuals who need a high-performance electric generator. It is applied in camping, camping, jobs where there is no electricity, reforms, nautical, motorhomes, energy source for country houses and well pumps.


  • 4000 Watt Maximum Output
  • Petrol 4T OHV, Air-cooled
  • Manual and Electric Starting
  • 9 Litre Fuel Tank Capacity
  • 1 Year Warranty

Product Card

Product Manual



Brand Hyundai

GTIN 0796548944028

Warranty Period: 1 Year

Product Category Inverter Generators

Maximum Output (Watts) 4000

kVA 5

Fuel Tank Capacity 7.8 Litres

Starting Method Manual, Electric and Remote Control (Fob Remote)

Displacement 223cc

Product Dimensions (mm) LxWxH 600 x 452 x 500

Type 4-Stroke

Noise @ 7m 59dB(A)

Net Weight (kg) 55

Engine Type 4T OHV, Air-cooled

Outlets 2x 15A 240V

Customer Reviews

all good Review by
Great product, easy to order online, delivery within a couple of days. Very happy.
(Posted on 14 November 2021)
Very surprised at the quality of this unit Review by
Absolutely perfect preformed better than expected.
(Posted on 2 March 2021)

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Product Q&A

Ask Us a Question
  • I plan to leave the generator outside my long term camp setup, what's your best inverter generator that can handle all weather conditions, especially heavy rain?

    Hi there, sounds like a nice set up! The short answer is that electricity and water don’t mix. Whilst we are aware that some people run their inverter gensets in all weather conditions, it is not recommended as safe or best practice for your equipment, as inverter generators do not come with weatherproof outlets as standard.

    Ideally, you would somehow shelter your generator from the rain. But just remember that fully enclosing your generator whilst its running is not an option - generators need fresh air intake for the engine to run and they emit carbon dioxide, so they should never be contained. Overall, some rain protection but also room for fresh air intake and fume emission is what you need.

  • Will this generator run the pump for my house water system?

    Hi, that is a tough question to answer without knowing more details about your pump. Water pumps come in a range of sizes and some smaller pumps can run on a small 2000 watt generator, whereas some house pumps would need around 6000 – 8000 watts or more!...electric pumps are notorious for having quite high starting loads. So, you would need to find out the peak load (in Watts) required to start your pump. If you cannot find the starting load from the product manual or data plate, you could contact the manufacturer of your pump, or engage an electrician to take a reading.

    Once you have that all important stating load amount for your pump, you can then choose the right sized generator to run your pump.

  • What is an "inverter" generator?

    Hi Alison, and thanks for your question. An inverter is a lightweight microprocessor that converts power from direct current (DC) into alternating current (AC). They are a fairly recent advancement in technology from the older style conventional generators. What it means is that the inverter generators produce very clean power which is required to run sensitive electronic equipment such as laptops, mobile phones, camera equipment etc. 

    The other benefits of inverter generators are that they are typically much smaller and lighter than standard open frame style generators and tend to operate at very low noise levels (less than 60 decibels). Lastly, they are also very efficient; their engine speed automatically adjusts in accordance with the required load, maximising fuel efficiency. 

    Overall, they are an extremely popular portable power source for camping, caravanning, DIY tasks, small business uses and home power back up. Inverter generators range from around 1000 watts up to 7000 watts.   

  • Do you guys have some general tips for generator maintenance? Ta

    Hi there - good question, yes, we do! Firstly, as a safety note, always stop the engine and let the generator cool down before starting any maintenance work. The five main general tips are;

    1. Replace engine oil
    2. Check spark plug, replace if necessary
    3. Check fuel level and ensure it is fresh fuel (fuel left for a long time can go "off")
    4. Check air filter, replace if necessary
    5. Clean muffler cover and check spark arrestor 

    You can also check out this helpful video on generator maintenance tips.

    For further maintenance help, you should take your generator to a small engine specialist or an accredited generator service technician. 

  • Hi guys, do you have these in stock at the moment? Can you tell me run time and if the unit has eco mode please.ThanksCam

    Hi There,

    These generators are not in stock at the moment sorry. We also do not have the run time on exo mode as this has not been made available by the manufacturer.

  • I want to mount this generator on the back of my work truck, if i remove the wheels etc, what air gap do I need to have between the bottom of the generator & the deck of the truck

    Hi There

    It would not be recommended to remove the wheels etc.

    There is also no specification as to how much of an air gap is required for ventilation.

    Kind Regards

  • Does the HY4000SEi have an auto choke?

    Yes, the unit does have an auto choke

  • Can these taps be used on mains water?

    Great question, the Coast Watermark Fold Down Taps are only suitable on water tanks with pumps. The mains pressure is too high for them and not advised to be used.


For details relating to this product's warranty CLICK HERE


    For details relating to our delivery process CLICK HERE

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