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OEM small gasoline engine manufacturer&supplier in China

93 - 999 cc

BISON small gasoline engine

BISON's gasoline engine is mainly used for generators, stationary pumps, electric tools, outboard and small inboard marine equipment, etc.

BISON, Professional global manufacturer of small gasoline engines.

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single cylinder small gasoline engine

single cylinder gasoline engine specification

Model & HP BS156F(3.0HP) BS168F(5.5HP) BS168F-1(6.5HP) BS170F(7HP) BS177F(9HP) BS188F(13HP) BS190F(15HP) BS192F(16HP)
GX100 GX160 GX200 GX210 GX270 GX390 GX420 GX440
Engine type Air-cooled, 4-stroke, OHV, single cylinder
Bore× Stroke 56x38mm 68x45mm 68x54mm 70x54mm 77x58mm 88x64mm 90x66mm 92x66mm
Displacement 93cc 163cc 196cc 210cc 270cc 389cc 420cc 439cc
Compression ratio 7.5: 1 8.5: 1 8.5: 1 8.5: 1 8.2: 1 8.0: 1 8.0: 1 8.0: 1
Starting system Recoil
Speed 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm 3000 / 3600rpm
Max output(kW/3600rpm) 3.0HP 5.5HP 6.5HP 7.0HP 9HP 13HP 15HP 16HP
Rated output(kW/3600rpm) 1.9 2.94 3.68 3.82 5.2 7.35 7.8 7.9
Torque 4.4N.m/2500rpm 10.8N. m/2500rpm 13N. m/2500rpm 14N. m/2500rpm 19N. m/2500rpm 26.4N. m/2500rpm 28N. m/2500rpm 28N. m/2500rpm
Fuel consumption 450g/kW. h 395g/kW. h 395g/kW. h 395g/kW. h 374g/kW. h 374g/kW. h 370g/kW. h 370g/kW. h
Fuel tank capacity 1.6L 3.6L 3.6L 3.6L 6L 6.5L 6.5L 6.5L
Oil capacity 0.37L 0.6L 0.6L 0.6L 1.1L 1.1L 1.1L 1.1L
N. W. /G. W. 10/10.5kg 15/16.5kg 16/17.5kg 16/17.5kg 26/28kg 31/33kg 32/34kg 34/36kg
Dimension 300x290x280mm 390x330x340mm 505x415x475mm
PTO shaft rotation  Counterclockwise(from PTO shaft side)
Optional N/A Electric start, camshaft, air cleaner, recoil starter

deceleration gasoline engine

deceleration gasoline engine specification

Model & HP BS168F-1(1/2 Deceleration) BS177F(1/2 Deceleration) BS188F(1/2 Deceleration)
GX200 GX270 GX390
Reducer  chain reducer (gear reducer), clutch reducer
Engine type Air-cooled,4-stroke,OHV,single cylinder
Bore× Stroke 68x54mm 77x58mm 88x64mm
Displacement 196cc 270cc 389cc
Compression ratio 8.5: 1 8.2: 1 8.0: 1
Starting system Recoil Or Key Start
Speed 1800rpm 1800rpm 1800rpm
Max output(kW/1800rpm) 6.5HP 9HP 13HP
Max.Torque 22N.m/1500rpm 31N.m/1500rpm 46N.m/1500rpm
Fuel consumption 395g/kW. h 374g/kW. h 374g/kW. h
Fuel tank capacity 3.6L 6L 6L
Oil capacity 0.6L 1.1L 1.1L
N. W. 20kg 30kg 34kg
Dimension 455x415x380mm 515x485x525mm 515x485x525mm
Container QTY/40”HQ 974pcs 480pcs 480pcs

V-twin gasoline engine

V-twin gasoline engine specification

Model BS2P77F BS2P80F BS2P82F BS2V80FD BS2V90FD
Engine type V-twin cylinder, Air cooled, 4-stroke, OHV
Displacement(cc) 708 764 802 764 999
Net power (kW/3600r/min)SAE 17 18 19 20 26
Bore x Stroke (mm) 77×76 80×76 82×76 80×76 90×78.5
Net Torgue Nm/r/min 47.5/2400 52/2400 55/2400 52/2800 74/2600
Starting system Electric
Lubrication system Splash+pressure
Fuel pump External
Fuel injection pressure Kpa 270 270 270 270 270
Injection mode Air port injection
Nozzle Multi port
Ignitor inductive
Sensor type T-MAP Sonsor、Oil Sonsor 、 O2 Sonsor 、 CPS 、 TPS
Governor system Mechanical Mechanical Mechanical Electronic Electronic
Air filter Dual-filter element Dual-filter element Dual-filter element Foam+paper filter element Foam+paper filter element
Engine oil capacity(L) 2.4 2.4 2.4 1.8 2.3
Fuel tank capacity(L) /
Net weight (kg) 42 42 42 49 60
Product Dimension (mm) 466*480*356 466*480*356 466*480*356 510*505*500 555*570*545

Happy Client's

Your satisfaction is our eternal pursuit, the greatest happiness

  • " BISON horizontal shaft gasoline engines feature precision-engineered components that provide smooth, quiet operation and up to 10% more output than standard engines. With 10 percent more torque than comparable engines, they are ideal for gasoline generators, water pumps and dozens of other machines. "

    - Roberto Santon


  • " This gas engine from BISON becomes an ideal replacement for most standard engine configurations, with durable cast iron cylinders that provide cooler, cleaner performance and longer life. This is an amazing deal! "

    - Rasmy Muosa


  • " Compared to previous gas engines sourced from local distribution channels, the BISON engine imported from China is quite reliable in quality, with a machine that can withstand long wear and tear yet still run smoothly, with a low oil shutdown and warning system. With easy start-up and user-friendly operation controls, it is an excellent engine and I am proud to have found such a good supplier to work with! "

    - Ranjeet Prasad


frequently asked questions

What is displacement?

The displacement of an engine is a measure of how much air can flow into all the cylinders and mix with the fuel. It is calculated by taking the volume in the cylinder from the lowest point of the piston to the highest point and multiplying it by the number of cylinders.

Why is my carburetor not filling with gasoline?

The most common reason for a carburetor not filling with gas is a dirty carburetor gas bowl, but there are other possible causes.

  • Low gas level

  • Gas switch

  • Clogged gas tank

  • Clogged gas filter

  • Clogged float needle

  • Clogged carburetor nozzle

  • Blocked gas line

What is the difference between a two-stroke and four-stroke engine?

Two and four refer to the number of strokes the piston takes to complete a cyclic event in the engine cylinder. The four strokes are: the intake stroke, the compression stroke for final ignition, the power stroke and the exhaust stroke to eliminate gas. A two-stroke engine combines the first two strokes (intake and compression) into one, and combines the power and exhaust strokes into one. The engine uses port openings in the cylinders instead of traditional valves.

What fuel do these engines use?

Although we refer to them as gas engines, these engines are capable of running on a variety of different fuels. Depending on the manufacturer and style, these engines can run on kerosene, gasoline, naphtha, vaporized oil, propane and natural gas. A common configuration is to start the engine on gasoline and then switch to kerosene.

How does an ignition system work in a small gasoline engine?

The ignition system is the starting system for a small engine. Whether you start the engine with a pull cord or turn the key on the electric starter motor to start the engine, you rely on the ignition system to create a spark in the combustion chamber.

When you start a small engine, you turn the flywheel and its magnets pass through the coil (or armature). This creates a spark. The ignition system coordinates the timing so that the spark will ignite the air-fuel mixture in the combustion chamber, just as it does in each engine cycle to reach maximum compression, thus maximizing engine power.

Once the engine is running, the flywheel continues to spin, the magnet continues to pass through the coil, and the spark plug continues to ignite based on a specific time.

What should I do to store my engine?

  • Allow the engine to run out of fuel.

  • If you are not draining fuel, add stabilizer and run it long enough to use fuel in the carburetor.

  • After the last use, change the fuel while it is still warm.

  • Put a teaspoon of oil in the spark plug hole.

Leave us your info

Gasoline engines can be used to manufacture to meet the requirements of any conceivable power-plant application. For example, cars, small trucks, buses, aviation planes, machine tools, lighting equipment, etc. Gasoline engines have compact size, simple structure and efficient performance. BISON also provides a series of gasoline engines to meet the import needs of different buyers, let us find out together!

But before that, if you are not familiar with gasoline power, or have never wholesaled gasoline power, you can follow us to briefly understand the basic working principle of gasoline power, and then learn how to choose different types of gas engines.

How does gasoline engine work?

Gasoline engine, any of a type of internal combustion engine that generates electricity by burning volatile liquid fuels (gasoline or gasoline mixtures, such as ethanol) and sparking ignition.

Two stroke and four stroke engine generate power in much the same way. The steps of 4-stroke process include:

small gasoline engine working principle

  1. The intake phase ( downward movement of piston) draws air and fuel into engine cylinders.

  2. During compression phase (where piston moves up), engine's pistons compress air/fuel mixture.

  3. During power phase, spark plug ignites air/fuel mixture, creating an explosion in combustion chamber that forces piston down (driving machine to work).

  4. During exhaust phase, piston returns to expel exhaust gas.

Two-stroke engine does all same steps, but only in two piston strokes.

Things to consider when importing gasoline engine

Regardless of whether you have imported gasoline motors, if you know the make/model of your equipment and are looking for a replacement engine supplier, please refer directly to our BISON product page for information on replacement engines, otherwise the most important thing is to understand the following. The main specifications and/or features of the engine to find the most suitable engine.

Brand model number

Engine model number can be located in many different locations, depending on manufacturer, and is usually located somewhere outside engine where it will be stamped, engraved or printed on engine. All true engines are manufactured with an engine model and specification. Sometimes they can be hard to find, but they are definitely there. The picture shows BS168F model engraved by BISON gasoline engine.


As small gasoline engine manufacturers introduce new models, you may not always find that your application's replacement engine will always have the exact same horsepower as your previous engine. In that case, look at a recent model with less horsepower or preferably more with the same specs and features as the older model's engine. For example, if you replace 6Hp BISON petrol generator engine and 6.5hp with the same specs and features is available in BISON latest range, then this will be your replacement engine option.

Crankshaft position (horizontal or vertical)

Horizontal shaft engines are most commonly used in water pumps, generators, wild dog machines and other equipment. A horizontal axis means that the axis is parallel to the ground.

Vertical axis engines are most commonly found on lawn mowers, where the vertical axis means the crankshaft is pointed towards the ground.

Number of cylinders

It is important to replace old engine with an engine with the same number of cylinders. For example, a large lawn mower fitted with V-twin engine will use the full torque of its engine and power from engine, so the device can use its full capacity. BISON single-cylinder engine cannot produce the same specifications as BISON V-twin engine.

Cylinder head style (flush or overhead valve)

With the exception of a very few engine models, the older flatheads are now mostly out of production and increasingly scarce. So most of our focus here is on the newer OHV engines and the issues you might run into. OHV models are usually longer (vertical axis models) or taller (horizontal axis models), which can be problematic in some cases, but if all other factors are equal, this is a very "workable" exchange. The OHV version is also generally more efficient and more powerful than its flat-headed counterpart, which is a definite benefit. However, you have to consider the exhaust system requirements again as they are most likely not compatible between the two engine types.

NOTE - The exhaust system for the OHV version may be mounted on the opposite side of engine from the flat head model, which would wreak havoc on any installation.

Crankshaft Diameter, Length and Height

For horizontal shaft engines, while the diameter measurement is obvious, please note that you should take the length measurement from the oil seal to the end of the crankshaft. Also, don't overlook the importance of crankshaft height, as this distance will vary by engine model and brand. Depending on the application, this can be a critical measurement!

For vertical shaft engines, there are two main measurements to consider, as well as the type and number of keyways required for your application.

In addition to diameter and length, it is important to know the keyway size and number of half-circle keys (if any) required for your application. Half-round keys are "half-moon" shaped keys that may be required to attach pulleys or other accessories to the crankshaft.

small gasoline engine details

Different types of gasoline engines

BISON gasoline engines are divided into Two-stroke engine and Four-stroke engines.

4 stroke gasoline engine

2 stroke and 4 stroke gasoline engines have different application areas. Four stroke cycle engines provide power for generators, water pumps, lawn mowers, most automobiles, light trucks, medium and large motorcycles, etc. Two-stroke air cooled gasoline engines mainly provide power for electric tools, hand-held garden tools and small outboard marine engines, such as chainsaws, lawn mowers, leaf blowers, etc.

Horizontal and vertical shaft gasoline engines

Horizontal shaft gasoline engine

In BISON horizontal gasoline engines, the crankshaft is oriented laterally on the device (pistons move vertically). These engines are mainly used in chainsaws and leaf blowers.

vertical axis gasoline engine

In vertical axis gasoline engine, the crankshaft is oriented vertically on the device (pistons move horizontally). These engines are mainly used in vertical engine string trimmers, brush cutters and small tillers.

In addition, BISON gasoline engine, there are wholesale 1/2 reduction engine series. Mainly divided into two different reducers, one is 1/2 gasoline engine with gear deceleration, and the other is 1/2 gasoline engine with clutch deceleration.

Contact BIAON for your gasoline engine service

If your engine fails, it may be time for a new one. BISON product line is designed for a wide range of industrial, agricultural and domestic machinery. As a professional Chinese engine manufacturer, our first-class design and reliable accessories can ensure high power output. You don't need to worry about the quality and durability of any engine, as every powertrain is produced to strict industrial ISO9001 standards and undergoes detailed factory inspections.

Looking to buy high-quality, reliable engines and accessories for your DIY projects? Whether you're looking for a replacement lawn mower engine or generator power, you'll find it at BISON-machinery.com.

Explore more on small gasoline engine

China BISON provides you with very convenient service, we guarantee fast delivery, reasonable price, and provide you with complete accessories and service support. If you are not sure which engine is best for your needs, please contact us and we will help you choose the most suitable engine and do our best to assist.

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