Buyer guide
How to Choose a 5.5 HP Gasoline Engine for OEM Equipment
An equipment maker needs a 5.5 HP engine in volume, and the first quotation usually quotes power and price only. The details that decide whether the machine works — shaft, mounting, tank position, starting — are settled later, by which time the frame is already welded.
The short answer
- Fix the mechanical interface before the price: shaft, keyway, bolt pattern, base height and shaft height above the base.
- 5.5 HP is a class, not a guarantee. Our FSH160 is 163 cc, listed at 5.5 HP / 3.1 kW and 16 kg — the catalogue prints both figures, so confirm the rating basis before comparing it with another maker.
- Decide recoil or electric start at the design stage. Electric start adds a battery, charging coil and switch, which changes the frame and the wiring loom.
- State the duty cycle. Continuous running at the rated figure shortens engine life; a larger engine running below its rating is usually the cheaper answer over a season.
The 5.5 HP model and its catalogue row
Read from the catalogue row for each model. Scroll the table sideways on a phone.
| Item | FSH160 |
|---|---|
| Displacement | 163 cc |
| Rated output | 5.5 HP / 3.1 kW |
| Net weight | 16 kg |
| Engine type | Air-cooled, four-stroke, OHV, single cylinder |
| Ignition | TCI |
| Starting | Recoil or electric start |
| Fuel | Automobile unleaded petrol |
Common specification applies across the engine range. Shaft and mounting dimensions are confirmed per order, because they follow the customer’s drawing.
How to choose
Draw the interface, not the engine
Put the shaft and mounting dimensions on your own drawing and send it. A supplier who builds to drawing will match it; one who only quotes a model number will not.
Decide the starting system
Recoil only is simplest and lightest. Electric start adds battery, coil and switch, and it is worth it where the end user is not a trained operator.
Fix the fuel tank and air cleaner orientation
These decide the machine envelope and the service access. Both can be specified, and both are expensive to change after tooling.
State the duty cycle and ambient conditions
Hours per day, load as a share of rated output, dust, altitude and temperature. Air-cooled engines lose capacity at altitude and in high ambient temperature.
Agree what is inspected and what ships with each lot
Pre-shipment test records, packing method and carton marking should be agreed in writing before the first batch, not after it.
Suited to
- Equipment that needs a light, air-cooled power unit in the 5.5 HP class.
- OEM builds where the interface can be specified on a drawing.
- Markets where petrol is the available fuel.
Not the right choice when
- Continuous heavy-duty duty at the rated figure, where a larger engine or a diesel unit is the better answer.
- Enclosed installations without airflow — air cooling needs unobstructed air around the cylinder and head.
How this is checked before it ships
Built to drawing, sample or specification
Customisation runs to your drawing and dimensional requirements, to a supplied sample, or to a specification developed jointly, including paint colour, decals and component materials.
What is checked before packing
Incoming components are inspected and recorded before assembly, each product family has a defined inspection method, and every unit is tested before it is packed.
More on the production sequence and the documents issued with an order: certifications, testing and quality control.
Models and pages referred to in this guide
About this guide
- Prepared by
- Fujiheng technical sales team
- How the figures were checked
- Figures cross-checked against the printed catalogue row for each model. Third-party engine figures are taken from the maker’s published data and labelled in the text.
- Last reviewed
- 2026-10-20
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Contact
Tell us what you need
Send us your market, required output and configuration and we will come back with a suitable model and quotation. We reply to enquiries within one working day.
- Telephone
- 0086-18662020695
- Factory and office
- Yancheng Fujiheng Power Machinery Co., Ltd.
Teyong Industrial Park, Sheyang County, Yancheng, Jiangsu, China
Teyong Industrial Park, Sheyang County, Yancheng, Jiangsu, China
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