Easily remove the cover for fast and easy filter cleaning or replacement.
Technical details
| Displacement | 2.5 in³ |
| Engine power | 2.70 bhp |
| Device weight without refuelling | 14.6 lb 1) |
| Cutting circle diameter | 16.5 in |
| Tank capacity | 25.4 fl oz |
Features
The pictures shown are sample photos. The actual appearance of the equipment features and their specific attachment to the product may differ from the pictorial representations, but will have the same functionality.
STIHL has a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
A lined shaft provides smooth operation and less vibration.
Centrifugal clutch is designed to reduce slippage.
Housings are lightweight, withstand greater impact, and are corrosion-resistant.
The IntelliCarb™ Compensating Carburetor measures the air pressure on the clean side of the air filter and adjusts the metering diaphragm in the carburetor. This keeps the RPM at a consistent level, even when the air filter begins to clog.
A thumb screw allows the ergonomic loop handle to be easily adjusted to the desired position without tools.
Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.
A powerful low exhaust emission engine saves users fuel and operating costs without losing the power they count on to get the job done.
The choke is protected to help prevent damage.
Large baffles reduce noise level and contain a screen designed to reduce the emission of sparks.
The spark plug is protected yet easy to change.
Dangling and loose wires are eliminated.
By pressing the bulb, this small fuel pump delivers fuel to the carburetor, reducing the number of starting pulls needed after an extended break between uses.
The ElastoStart™ starter handle is a feature of STIHL. It is a starting grip with a built-in shock absorber that helps reduce the effort when pulling on the starter cord. The ElastoStart™ starter grip noticeably reduces the sudden peak forces (compression) normally felt during cranking. The forces which occur at the grip after the first compression stroke are smoothed out.
The semi-automatic choke lever enables the simplified three-step start procedure, saving users time and allowing them to start jobs faster.
To get started, users simply pump the fuel primer, set the choke, and pull the starter cord. The built-in stop switch allows the user to turn off the engine with a simple press of the button. When the engine is off, the throttle lock automatically returns to the "start" setting. The tool will be ready to start again when the user is ready to get back to work.
TapAction™ allows users to adjust the line length simply by tapping the cutting head against the ground.
This safety feature must be depressed before the trigger can be activated.
Easily check the fuel level before starting work. If fuel is needed, the upright position makes the tank easier to fill.
Thanks to better air filtration due to its greater surface area, the vertical pleated paper air filter can extend the time between servicing.
This powerful loop-handle gas trimmer is built with a semi-automatic choke lever, offering a simplified starting procedure.
Equipped with a simplified starting procedure, the FS 251 R was built for pros with no time to waste. Designed with a powerful low exhaust emission engine, the FS 251 R saves on fuel and operating costs without losing any of the power. The FS 251 R combines its rugged design with versatile features such as the loop handle, ideal for trimming between bushes and shrubs and other hard to reach areas, to provide you with a heavy-duty tool that provides optimal maneuverability to handle a variety of situations. Equipped with a vertically-pleated paper air filter that provides an extended service life, you can get to work quicker and count on the gas trimmer to last longer.
The STIHL FS 251 R trimmer has been upgraded to deliver more cutting power and greater efficiency. Its new high-torque gearbox provides 13.5% more torque, allowing for faster, cleaner cuts through thick grass and brush. The cutting radius has been expanded from 16.5" to 17.7", helping users cover more ground with fewer passes. A redesigned deflector with skirt complements the wider radius, improving debris control and trimming precision. The gearhead has been angled to 35 degrees for improved ergonomics.
Note: Available for purchase in California with the 4-tooth grass cutting blade only.
This Trimmer is compatible with the following Cutting Heads:
- FixCut™ 31-2 (4001 710 2105) | Optional Line Sizes: .080", .095", .105"
- STIHL SuperCut™ 20-2 (4002 710 2162) | Standard Size: .095"
- AutoCut® C 26-2 (4002 710 2169) | Standard Line: .095" | Optional Line Sizes: .095", .105"
- AutoCut® 36-2 (4002 710 2170) | Standard Line: .105" | Optional Line Sizes: .095", .105"
- DuroCut 20-2 (4002 710 2182) | Standard Line: .120" | Optional Line Sizes: .080", .095", .105"
- TrimCut™ C 32-2 (4002 710 2198) | Standard Line: .105" | Optional Line Sizes: .095"
- STIHL AutoCut ® 27-2 (4002 820 2302) | Standard Line: .095" | Optional Line Sizes: .105"
- STIHL AutoCut ® 27-2 long life (4002 820 2304) | Standard Line: .095" | Optional Line Sizes: .105"
This Trimmer is compatible with the following Blades:
- Metal Blade: Grass-4, 25.4 mm (4001 713 3801)
- Metal Blade: Grass-8, 25.4 mm (4001 713 3803)
- Brush Knife: 250 mm x 25.4 mm (4112 713 4100)
Hazard Warnings
Proposition 65 - English
This product contains chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov
General Power ToolImproper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only. Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.
E-10 StatementNote: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty.
