Baumr-AG SX200E 6.5HP Petrol Engine: Replacement & Fitment Guide for Australia
Quick verdict: The Baumr-AG SX200E is a 196cc single-cylinder, four-stroke horizontal-shaft petrol engine designed for stationary machinery such as pumps, compressors, pressure cleaners, generators, log splitters and similar equipment.
Its published maximum output is 6.5HP / 4.8kW, while its rated output is 5.7HP / 4.2kW. It combines key electric starting with recoil backup and includes low-oil shutdown.
The most important issue when considering it as a replacement engine is not horsepower alone. Buyers need to confirm shaft diameter, shaft length, keyway, rotation/orientation, mounting-hole pattern, coupling alignment and available clearance before ordering.
Testing statement: Firebusters has not personally installed or operated the SX200E. This guide is based on current Baumr-AG, Edisons and Australian safety information.
Verified SX200E Specifications
| Model | SX200E |
| SKU | ENGPTLBMRC20E |
| Engine | Single-cylinder, 4-stroke, air-cooled OHV |
| Displacement | 196cc |
| Bore × stroke | 68 × 45mm |
| Maximum output | 6.5HP / 4.8kW |
| Rated output | 5.7HP / 4.2kW |
| Maximum torque | 14Nm |
| Operating speed | 3600 RPM |
| Compression ratio | 8.5:1 |
| Shaft diameter | 19mm published |
| Shaft length | 58mm |
| Keyway | 5mm wide |
| Output axle orientation | Left, as specified by supplier |
| Starting | Key electric start plus recoil backup |
| Battery | Not included |
| Ignition | Transistor magneto |
| Fuel | Regular unleaded 95+ RON, according to current supplier specification |
| Fuel capacity | 3.6L |
| Oil capacity | 0.6L |
| Oil | Specified non-synthetic grades include 10W-30, 10W-40, 15W-30 and 15W-40; oil not supplied |
| Low-oil protection | Low-oil shutdown |
| Air cleaner | Semi-dry cyclone-type, as specified by supplier |
| Dimensions | Approximately 42 × 30 × 33cm |
| Product weight | Approximately 17kg |
| Current standard warranty | 12 months shown by Edisons; confirm current conditions when purchasing |
6.5HP Maximum vs 5.7HP Rated Output
This distinction is worth understanding before buying.
The SX200E is marketed as a 6.5HP engine, but Edisons publishes:
- Maximum output: 6.5HP / 4.8kW
- Rated output: 5.7HP / 4.2kW
The maximum figure should not automatically be treated as the power the engine can continuously deliver in every installation.
When replacing an existing engine, compare the old engine’s rated output, operating speed and torque requirements rather than simply looking for another product with “6.5HP” written in the title.
The Shaft Is the First Fitment Check
The SX200E has a horizontal output shaft with the following published measurements:
- 19mm shaft diameter
- 58mm shaft length
- 5mm keyway
These dimensions need to match the pulley, clutch, pump coupling, sprocket or other driven component on your machine.
Also compare:
- shaft projection from the crankcase
- key position and dimensions
- threading or retaining-bolt arrangement
- direction/orientation of the output shaft
- pulley or coupling alignment
Is It a Direct Honda GX200 Replacement?
Edisons states that the Baumr-AG stationary-engine range uses a standard shaft and has a footprint similar to many common engines, including Honda and Briggs & Stratton products.
That makes the SX200E worth investigating where an older common-format horizontal-shaft engine needs replacement.
However, Firebusters would not call it a guaranteed direct GX200 replacement.
The current product specification does not publish all mounting-hole centres needed to prove a bolt-in swap for every application.
Before ordering, measure:
- front-to-rear mounting-hole centres
- side-to-side mounting-hole centres
- mounting-slot dimensions
- shaft centre height above the base
- shaft diameter and projection
- clearance around the fuel tank
- muffler clearance
- air-filter clearance
- starter and control clearance
A small difference can cause belt misalignment, coupling problems or interference with the existing frame.
What Equipment Might It Be Used With?
The supplier identifies applications including:
- water pumps
- air compressors
- generators
- log splitters
- pressure cleaners
- construction and agricultural equipment
That should be treated as a list of potential engine applications, not a guarantee of compatibility with every machine in those categories.
The driven equipment may have specific torque, governor-speed, shaft, clutch, cooling or mounting requirements.
Electric Start Is Useful — But the Battery Is Not Included
The SX200E provides both key electric start and recoil starting.
This gives two starting options, but the current Edisons specification clearly states that the battery is not included.
Before planning an electric-start installation, confirm:
- the required battery specification
- where the battery will be securely mounted
- cable size and routing
- terminal protection
- isolation requirements
- whether the existing machine wiring can be reused
Do not leave an unrestrained starting battery beside a vibrating engine or close to hot exhaust components.
Do Not Forget the Engine Oil Before First Start
Engine oil is not supplied with the SX200E.
The published oil capacity is approximately 0.6 litres.
Edisons currently specifies non-synthetic engine-oil grades including:
- 10W-30
- 10W-40
- 15W-30
- 15W-40
Check the current manual for the appropriate viscosity for the ambient operating conditions.
The engine also includes low-oil shutdown, but that protection should never be used as a substitute for checking the oil level before starting.
Guarding the Shaft, Belts and Couplings
A replacement engine can introduce a serious machinery hazard if an originally guarded shaft, belt, pulley, coupling or chain is left exposed after installation.
Safe Work Australia guidance identifies rotating shafts, couplings, belts, pulleys and other moving machinery components as hazards that may require guarding to prevent contact and entanglement.
After fitting the engine:
- restore existing guards
- replace damaged guards
- do not leave rotating couplings exposed
- ensure belts and pulleys cannot be contacted during normal operation
- make sure guards can withstand normal vibration and use
For workplace machinery, the completed installation needs to be assessed as a complete item of plant rather than treating the engine alone as the safety issue.
Petrol Exhaust and Carbon Monoxide
Petrol engines produce carbon monoxide and other combustion gases.
Carbon monoxide is particularly dangerous because it cannot be reliably detected by smell, taste or sight.
Take particular care with:
- sheds with doors closed
- garages
- shipping containers
- covered work areas
- pits or low areas
- equipment positioned near doors, windows or air intakes
Position the exhaust so fumes cannot be drawn into occupied areas.
Petrol Refuelling and Hot-Surface Risk
Petrol vapour can ignite from sparks, static electricity or hot engine components.
WorkSafe Victoria has investigated burn incidents involving petrol-powered portable equipment and recommends controls including allowing equipment to cool before refuelling, using well-ventilated areas, keeping away from ignition sources and avoiding refuelling on unsuitable insulated surfaces.
- Stop the engine before refuelling.
- Allow hot components to cool.
- Keep cigarettes, flames and sparks away.
- Use an appropriate fuel container.
- Clean up spills before restarting.
- Inspect the fuel system for damage or leaks.
Victorian Fire-Season Rules Can Apply
Owners using stationary petrol engines in Victoria should also consider seasonal and location-specific fire restrictions.
Forest Fire Management Victoria currently states that, in areas covered by the Forests (Fire Protection) Regulations 2025 during the relevant prohibited period, stationary engines operating in the open air or exhausting into the open air may require:
- a compliant working spark arrestor
- at least 1.5 metres clearance from flammable material around and above the engine
- specified firefighting water or extinguishing equipment immediately available
Who Might Consider the SX200E?
Potential fit
- replacement of a compatible horizontal-shaft engine
- water pumps
- log splitters
- compressors
- pressure cleaners
- property and workshop machinery
- users wanting electric start with recoil backup
Not a straightforward choice where
- a vertical shaft is required
- shaft dimensions differ
- mounting centres do not match
- there is insufficient exhaust or air-filter clearance
- a specific certified engine is required by the machine manufacturer
- continuous-duty output requirements exceed the engine’s rated capability
Pre-Purchase Fitment Checklist
- Identify the original engine. Find its model, rated output and operating speed.
- Measure the old shaft. Check diameter, usable length, keyway and retaining arrangement.
- Measure the mounting holes. Do not rely solely on “Honda-style” or “GX200-type” descriptions.
- Check shaft centre height. Belt and coupling alignment must remain correct.
- Measure available space. Allow for the tank, muffler, air filter, starter and controls.
- Confirm the driven load. Make sure the pump, compressor, generator or other equipment is suitable for the engine speed and rated output.
- Plan the electric start. The battery is not supplied.
- Check guarding. All shafts, couplings, belts and pulleys must remain appropriately protected.
- Plan exhaust ventilation. Never create a confined exhaust-gas hazard.
- Check current fire restrictions. This is particularly important for property and rural use.
Frequently Asked Questions
What is the exact model?
The current electric-start 6.5HP model is the Baumr-AG SX200E, SKU ENGPTLBMRC20E.
Is it really 196cc?
Yes. Edisons currently specifies 196cc displacement.
Is it actually 6.5HP?
The published maximum output is 6.5HP / 4.8kW. Rated output is lower at 5.7HP / 4.2kW.
What size is the shaft?
The published shaft diameter is 19mm, with 58mm shaft length and a 5mm keyway.
Is it a direct Honda GX200 replacement?
Do not assume so. The supplier describes the range as having a common footprint similar to many Honda and Briggs & Stratton engines, but exact mounting and shaft measurements should be compared before purchase.
Does it have electric start?
Yes. It has key electric start plus recoil backup.
Is the battery included?
No. The current product specification states that the battery is not included.
How much fuel does it hold?
The published tank capacity is 3.6 litres.
How much oil does it take?
The published oil-system capacity is approximately 0.6 litres. Engine oil is not included.
Does it have low-oil shutdown?
Yes, according to the current Baumr-AG/Edisons specification.
How much does it weigh?
Approximately 17kg.
Can I run it inside a shed?
Petrol-engine exhaust can create dangerous carbon-monoxide concentrations in enclosed or poorly ventilated spaces. Engine location and exhaust ventilation must prevent exposure.
Has Firebusters tested the engine?
No. Firebusters has not personally installed or operated the SX200E.
Final Assessment
The Baumr-AG SX200E has a useful specification for common stationary-engine replacement projects: 196cc displacement, 5.7HP rated output, 6.5HP maximum output, 19mm × 58mm horizontal shaft, 5mm keyway, electric and recoil starting, low-oil shutdown and a relatively compact 17kg package.
However, buying a replacement engine by horsepower alone is risky.
Our recommendation: consider the SX200E only after confirming the shaft, mounting, alignment, rated power, operating speed and physical clearances against the machine being repowered. Treat supplier references to common Honda or Briggs & Stratton footprints as a compatibility clue rather than proof of a direct bolt-in replacement.
Research Sources
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Baumr-AG – SX200E 6.5HP stationary engine
-
Edisons – SX200E specifications, dimensions and warranty
-
Safe Work Australia – Machinery guarding
-
WorkSafe Victoria – Petrol-powered equipment refuelling hazards
-
WorkSafe Queensland – Carbon monoxide and petrol-powered equipment
-
Forest Fire Management Victoria – Stationary engine fire restrictions
Research checked September 2026. Specifications, availability, warranty terms and supplied components can change. Always confirm critical fitment dimensions against the current product information and the equipment being repowered.
General information only. Firebusters has not personally installed or tested this engine. Machinery installation, guarding and workplace use should comply with current manufacturer instructions and applicable Australian requirements.
