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Wholesale Gasoline & Diesel Engine

BISON’s competitive and high-quality gasoline & diesel engine factory prices will give you an advantage in your own market. China BISON is a professional machinery factory&supplier. Wholesale 2022 best small gasoline & diesel engine at the competitive price.

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BISON Diesel Engines

BISON Gasoline Engines

Taizhou BISON Machinery CO., LTD

Taizhou BISON Machinery CO., LTD. is located in Taizhou city, Zhejiang province, China which covers the three famous highways-Ningbo,Taizhou, Wenzhou and is know as the capital of machine. BISON has advanced automatic production equipment, more than four production lines, perfect testing equipment, a group of excellent technical personal, strict and perfect management system, specializing in the production of more than 200 series of high pressure washer, generators, water pumps, engines, etc. BISON cover an area of 20,000 square meters and has about 200 staffs. BISON production is cover millions of machines which sold at home and abroad.


We are a chinese specialist manufacturer and supplier of generators, high pressure washer, engine, water pump to the worldwide. We have been developing and producing professional power equipments since 2014. Our faith is meet the highest product quality standards and offer our customers the best quality and greatest degree of satisfy. Today, we are the market leader in China,shipping our products to over 63 countries around the globe.

Find out more ABOUT US or CONTACT US to discuss your specific requirements.


Small engine is an internal combustion engine, which relies on the explosion of fuel to operate. The explosion produces energy, and the mechanical parts in the engine use this energy to power the equipment.

Like any equipment, the engine needs maintenance to keep it in top condition. The following are some tips for maintaining the engine:

  • Check the engine oil regularly. If you keep running the engine, you may need to check the oil every 5 hours. The BISON engine is equipped with a low oil level sensor, which will shut down the engine when the oil level drops too low
  • Check the oil filter and air box and make sure they are clean. Remove all debris from the air inlet of the carburetor.
  • If you are not using the engine, drain the fuel and dry the carburetor.
  • When refueling the engine, make sure that the engine is cool and the refueling area is well ventilated. Do not add oil while the engine is running, as this may cause a fire.

Engine Wholesale Guide


How does an engine work?

The basic chemical process of releasing energy from a mixture of fuel and air, the ignition and combustion of the fuel occurs inside the engine. The engine then converts some of the energy produced by combustion into work. An engine consists of a stationary cylinder and a moving piston. The expanding combustion gases push the piston, which in turn rotates the crankshaft. Ultimately, this motion drives the wheels of the vehicle through a system of gears in the powertrain.

There are two types of internal combustion engines in production today: spark-ignition gasoline engines and compression-ignition diesel engines. Most of these are four-stroke cycle engines, which means that four piston strokes are required to complete a cycle. The cycle consists of four different processes: intake, compression, combustion and work strokes, and exhaust.

In addition to the usual gasoline or diesel engines, BISON also offers dual-fuel engines or multi-fuel engines.

Whether in extremely low temperatures or in tropical climates, BISON small engines do their job reliably. Small engines are small, simple and efficient. With regular maintenance, thousands of hours are commonplace. Instead of replacing the power plant, replace the engine and BISON will save you a great deal of money.

Check out our wide range of industrial engines; electric start and recoil start, small gasoline and diesel engines wholesale.

BISON small engine types

There are two types of internal combustion engines currently in production: spark ignition gasoline engines and compression ignition diesel engines. Most of them are four-stroke cycle engines, which means that four piston strokes are needed to complete a cycle. The cycle consists of four different processes: intake, compression, combustion and work strokes, and exhaust.

Spark-ignition gasoline engines and compression-ignition diesel engines differ in the way they supply and ignite fuel. In a spark ignition engine, the fuel is mixed with air and then drawn into the cylinder during the intake process. After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion. The expansion of the combustion gases pushes the piston during the work stroke. In a diesel engine, only air is drawn into the engine and then compressed. The diesel engine then sprays fuel into the hot compressed air at a suitable and measurable rate to ignite it.

Small engines can be divided into two different types based on their engine technology: two-stroke and four-stroke. Most of them are four-stroke cycle engines, which means that four piston strokes are required to complete a cycle. The cycle consists of four different processes: intake, compression, combustion and exhaust. Four-stroke engines power most cars, light trucks, medium and large motorcycles, and lawn mowers. Two-stroke engines are less common, but they are used in small outboard marine engines and many handheld landscape tools such as chainsaws, hedge trimmers and leaf blowers.

You can also get horizontal engines or vertical engines at BISON Wholesale.
What is the difference between a vertical shaft engine and a horizontal shaft engine? In a horizontal engine, the piston moves vertically. If the engine is tilted or if the horizontal shaft motor is not mounted vertically, oil flows from the crankcase into the piston chamber. These engines are mainly used in chain saws and leaf blowers. In vertical engines, the piston moves horizontally. These engines are mainly used in lawn mowers, irrigation cutters and small cultivators. In addition, there are many types of shafts, such as tapered shafts, keyway shafts, threaded shafts, etc.

wholesale china high-performance engine from BISON

  • Horsepower

    As manufacturers continue to introduce new models, you may not find a replacement engine with exactly the same horsepower. In this case, you need to choose the most recent model with the same specifications and functions. BISON’s engine series range from 2.6HP to 18HP and can be connected to any application you may need. If you replace the electric motor with a gasoline engine, please use the following formula: Gas engine HP = Electric motor HP x 1.3. This is because the efficiency of a gas engine may be 30% lower than that of an electric motor. If designing a new application, remember to choose an engine that uses up to 85% of its rated horsepower. You don’t want the engine to run at 100% load for a long time, otherwise its life will be significantly shortened. Another factor to consider when sizing a gas engine is altitude. Due to the reduced oxygen content, small engines lose power at high altitudes. This means that a larger displacement engine is needed to offset the power loss.

  • Number of cylinders

    It is very important to wholesale engines with the same number of cylinders. A single-cylinder engine cannot produce the same power and torque as a V-type two-cylinder engine, and cannot give full play to the full capabilities of your machine.

  • Crankshaft

    For horizontal shaft engines, you should measure the length from the oil seal to the end of the crankshaft. For vertical shaft engines, you must measure from the mounting flange of the engine to the end of the crankshaft, and you also need to consider the type and number of keyways required for your application.

  • Start method

    The recoil start system is activated by a drawstring. The pull rope drives the flywheel to rotate to generate the voltage required for ignition. The electronic starting system relies on battery power and a starting motor to start the engine.

  • Features to consider

    • The gear ratio takes into account the application of the equipment and the speed of the engine. On most small engines, the speed of the crankshaft is 3,600 revolutions per minute (RPM). In some applications this speed will be too high. The engine with a gear ratio of 6:1 has a gearbox integrated with the engine crankshaft. Every 6 revolutions of the crankshaft, the gearbox and the shaft of the gearbox will rotate once, and the final output is 600 RPM. This allows the engine to run at the highest no-load speed while still using the full torque of the engine.

    • If there is insufficient oil in the crankcase, the low oil level system grounds the ignition device, thereby stopping the engine (or preventing it from starting).

    • The mechanical governor uses gears and flyweights in the crankcase to sense speed and detect changes in load, and adjust the throttle to compensate.

    • Cast iron cylinder liners, pistons and related components can withstand wear and tear, while improving fuel consumption to extend engine life.

Engine parts and maintenance tips

1. Use good quality fuel
Whether you are using a diesel engine or a gasoline engine, it is highly recommended that you use good quality fuel as it will help keep your injectors in good working condition.

Using poor quality fuel can cause varnish and sludge to accumulate in specific areas of your engine and fuel system, which can lead to reduced fuel efficiency, rough idle, injector deposits and clogged filters.

When your truck’s engine components are clogged or damaged by the use of poor quality fuel, you may need to purchase truck spare parts to replace them.

2. Control the temperature
Engines should be kept at an optimum temperature of 80°C to 85°C. Keeping them in this temperature range will improve operating efficiency and thermal efficiency, while also reducing wear and tear on components.

Allow your engine to idle for about 30 seconds to 1 minute to warm up and allow the oil to circulate fully before you go. In order to cool the engine when it gets too hot, coolant needs to be circulated through the pipes to the radiator.

3. Monitor your coolant
The coolant in your engine is critical for maintenance. It should be checked regularly as it can become more acidic over time and corrode the components in the cooling system. Check the coolant level to make sure there is enough coolant in the engine and flush it regularly.

4. Replace the fuel filter and air filter
Natural fuel is dirty and will quickly clog your fuel filter. Fuel filters collect debris in one place and prevent them from entering the engine. If they are not replaced regularly, they can become clogged with debris and fail to filter fuel properly, leading to fuel inefficiency and other problems.
Changing them regularly will protect important diesel engine components from unnecessary wear and damage, which can lead to potentially expensive engine repairs and maintenance. 

  • air filter

    The air filter prevents debris from entering the engine and clogging or damaging important components. There are several main types of air filters, including pleated paper, sponge, and dual filter elements. If the filter is clogged, the engine will not be able to breathe, resulting in loss of power. The filter should be checked and cleaned or replaced regularly.

  • Carburetor

The carburetor is like the heart of the engine. Good cleaning or maintenance will avoid engine failure due to carburetor problems. If you encounter more serious problems, please replace the carburetor.

5. Change the oil
Dirt in the engine oil can lead to corrosion and even shorten the life of the engine; it can also be dangerous, increasing the risk of damage and potentially costly repairs in the future. 

Regular oil changes help remove particles and sludge from your engine, allowing your engine to run at peak efficiency and improving fuel efficiency.

Regular oil changes help remove particles and sludge from your engine, allowing your engine to run at peak efficiency and improving fuel efficiency.Relying on BISON versatile and durable engine, no matter how difficult the work is, it can run consistently and start easily. With OHV technology, our engines can maximize power without sacrificing fuel economy.