4000 watt generator

ce 1
2 years warranty
epa 1
  • Two AC power outlets and one 12V DC power outlet
  • Low THD – safe for sensitive electronics
  • High-efficiency run mode
  • Automatic low oil shutdown…
no brand30 sets
OEM standard50 sets
OEM special100 sets

BS5500 Specifications

Maximum Power of the Generator (KW)4000 W
Rated Power of the Generator (KW)4500W
Rated output voltage (Volt)1 Phase / 3 Phases (Optional)
Over Load Protector (OLP)YES
Rated frequency (Hz)50 / 60 Hz
Rated Current (Amp)16
Power factor1.0 (Single Phase) / 0.8 (Three Phases)
Fuel Tank Capacity15L
Fuel option#92, #95 Unleaded Gasoline
Socket rating16A
Self start motorRecoil start/Electric start
Fuel consumption at 100% Load1.2kg/h
Fuel consumption at 75% Load1.1kg/h
Fuel consumption at 50% Load0.85kg/h
Continuous Duration of operation at Rated load (hour)7.5
Ignition systemT.C.I
Noise Level (dB) at rated load (from 4-meter distance)93.2
Engine & Emission Specifications
Engine ModelBS177F
Fuel TypeGasoline
Engine Speed3000(50 Hz) / 3600(60 Hz) RPM
Bore × Stroke77*58mm
Engine Displacement225 cc
Engine/Motor Type1-Cylinder, Air-Cooled, 4-Stroke, Direct Injected,OHV
Engine Oil grade#5W-40
Fuel Capacity0.6L
Low Oil Shutdown/AlertYes
Recoil StartYes
Electric StartOptional
Type of alternator100% Copper (Corrective Wave)
Rotor RPM3000
Alternator Size160*130mm

We present to you the BS5500 model, a 4000-watt generator from BISON Power – your new asset for offering versatile and convenient power solutions. This compact generator is designed to cater to a wide range of needs, from camping trips, weekend projects, to providing robust backup power during outages.

Key Selling Points:

  • Start-up Efficiency: The BS5500 features a reliable recoil start system and Cold Start Technology, ensuring quick starts even in cold weather – a great selling point for customers in colder climates.
  • Safety Measures: Safety is paramount in the BS5500 design. Highlights include push-to-reset circuit breakers and a low oil shut-off sensor, making it an easy sell for safety-conscious buyers. An included oil funnel simplifies oil changes.
  • Power-packed Performance: With a dependable 224cc single-cylinder OHV BISON engine, the BS5500 produces 5000 starting watts and 4000 running watts. It promises up to 14 hours of run time at 50% load with a full gasoline tank.
  • Multiple Outlets: The BS5500 features Two AC Power Outlets and one 12V DC Power Outlet, broadening its usability.
  • Noise Level: Operating at a noise level of 68 dBA from 7m, the BS5500 is comparable to a vacuum cleaner, making it an attractive option for noise-sensitive users.
4000 watt generator details
4000 watt generator details 2
4000 watt generator details 3

A class core parts

Dive deep into the world of BISON high-quality gasoline generators, where unrivaled performance meets highest reliability.

generators all copper motor

100% all-copper motor

Offering durability and superior energy efficiency

generators carburetor

Domestic top carburetor

high atomization level, ensuring optimal fuel efficiency and smooth engine operation.

generator pull plate

Powerful pull plate

Easy to start pull plate, guarantee more than 10,000 pulls

generators frames

robust frames

Professional welding and painting process to ensure the beauty and stability of the rack

tight quality contorl

product assembly process 1

4000 watt generator assembly process

  • Use special equipment to assemble, ensure the beaning, oil seal, governor gear effectively fit
  • When assembling nuts for each muffler, spring pads need to be installed to ensure the fit of each component and the maximum noise reduction effect
  • Use a special air gun, and use different torque standards for different parts
  • Water test is required in each engine assembly to ensure the tightness of itself
  • Pay attention to small details, add thread glue and spring washers to the bolts; add support feet to the motor bracket
  • More than 20 debugging processes throughout the whole process to ensure that the machine 100% meets the factory requirements
product inspection process

4000 watt generator inspection process

As a manufacturer ourselves we’re incredibly good at spotting build quality and engineering excellence. We perform pre-delivery inspections on the majority of the products we send out from our warehouses, meaning a trained technician has evaluated the product before it reaches you.

  • Water Test: Ensures 100% cylinder tightness, detecting any possible leaks.
  • Unit Comprehensive Intelligent Test Cabinet: Each generator undergoes a full inspection to confirm reliability and accuracy.
  • Withstand Voltage Tester Inspection: Every generator is fully inspected, ensuring precise electrical safety measurements.
  • Strengthened Laboratory Standards: Our lab exceeds national sampling standards, resulting in superior product durability.

Professional technicians with 15-20 years of experience

performance commissioning

Performance Commissioning

machine assembly

Machine Assembly

artwork qa

Artwork QA

full inspection

Full Inspection

generator specialized inspection

Generator Specialized Inspection

parts assembly

Parts assembly

core assembly

Core Assembly

power specialized inspection

Power Specialized Inspection

Custom Service

We has always been uphold the professional knowledge, and take quality, safety, energy saving and environmental protection as the core. Providing reliable products and high quality service, meet the needs of customers in different fields, dare to take responsibility.

Support & Warranty:

The BS5500 model comes with a 1-year limited warranty and lifetime technical support, further enhancing its value proposition.

Stock the BS5500 4000-Watt Generator today! Provide your customers with a power solution that is versatile, reliable, and convenient. BISON Power Equipment – Powering Your Success!

Packaging & Delivery

Packaging Details: brown strong carton, generator is protected with poly bag, wooden, 1pc / carton. Lead Time: Shipped in 25 days after payment.


Special logistics packaging


Perfect Storage


Sea Transportati

Speak with a BISON sales manager

Contact us today for expert advice.



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