STIHL® FS 251 R

• Weight: 14.6 lbs.
• Power Source: Gas
• Cutting Width: 16.5 inches
• Engine:
• Power: 2.7 bhp
• Fuel Capacity: 25.4 oz.
• Displacement: 41.6 cc

What is the STIHL FS 251 R trimmer?
The STIHL FS 251 R is a professional gas-powered trimmer designed for heavy-duty mowing, dense vegetation and demanding landscape-maintenance work.

Who is the STIHL FS 251 R best suited for?
It is built for professional landscapers, municipal crews, agricultural operators and property-maintenance teams that need high power and maneuverability.

What engine does the STIHL FS 251 R use?
It uses a 41.6cc low-emission gas engine.

How much power does the STIHL FS 251 R produce?
The listed engine output is approximately 2.7 bhp.

What is the cutting width of the STIHL FS 251 R?
It has a cutting width of approximately 16.5 inches.

What is the fuel capacity?
The fuel tank holds approximately 25.4 oz.

Does the STIHL FS 251 R require mixed fuel?
Yes. It uses gasoline mixed with approved two-stroke engine oil according to STIHL specifications.

What type of handle does the STIHL FS 251 R use?
It uses an adjustable loop handle.

Why is the loop handle useful?
It improves maneuverability when trimming between shrubs, around obstacles and in other confined areas.

Can the loop handle be adjusted without tools?
Yes. A thumb screw allows the handle position to be changed without tools.

What does the R designation mean?
The R designation identifies the loop-handle version, which is designed for greater control in tight spaces.

What type of cutting head comes with the FS 251 R?
The supplied information lists a TapAction AutoCut cutting head, but the exact package contents should be confirmed before purchase.

How does the TapAction AutoCut head work?
The operator taps the cutting head on the ground while it is running to advance additional trimmer line.

Can the STIHL FS 251 R use a metal blade?
Its heavy-duty design may support approved metal cutting attachments, but only blades specifically approved by STIHL for this model should be installed.

Can the STIHL FS 251 R be used for brush clearing?
Yes. With the correct approved attachment, it can handle dense weeds, heavy grass and brush.

Can it cut small saplings?
It may handle suitable woody growth with an approved blade, but it is not a replacement for a dedicated clearing saw or chainsaw.

What is STIHL ElastoStart?
ElastoStart uses a shock-absorbing starter handle to smooth the compression forces felt when pulling the starter cord.

Does ElastoStart make the trimmer easier to start?
Yes. It reduces the sudden resistance and strain normally felt during recoil starting.

Does the STIHL FS 251 R have electric start?
No. It uses a recoil starter with STIHL ElastoStart assistance.

What is the simplified starting procedure?
The operator presses the primer, sets the choke and pulls the starter cord. The stop switch automatically resets the controls for the next start.

What is the semi-automatic choke lever?
It supports a simplified three-step starting process and helps reduce setup time before work.

What is the purge pump primer?
The primer bulb delivers fuel to the carburetor, helping reduce the number of starter pulls after the machine has been sitting.

What is IntelliCarb technology?
The IntelliCarb compensating carburetor adjusts fuel metering as the air filter becomes dirty, helping maintain consistent engine speed.

Does IntelliCarb eliminate air-filter maintenance?
No. The air filter still requires regular inspection, cleaning and replacement.

What type of air filter does the FS 251 R use?
It uses a vertical pleated paper air filter.

What are the benefits of the pleated paper air filter?
Its larger surface area supports effective filtration and can extend the time between servicing.

Is the air filter easy to access?
Yes. The removable air-filter cover allows quicker cleaning or replacement.

Does the STIHL FS 251 R have an anti-vibration system?
Yes. The anti-vibration system helps reduce vibration transferred to the operator.

Why is reduced vibration important?
It improves comfort and can help reduce fatigue during extended professional use.

What is the multi-function control handle?
It places the throttle, start, run and stop controls within easy reach on one handle.

What is the throttle trigger interlock?
It is a safety feature that must be pressed before the throttle trigger can be activated.

What is the heavy-duty steel-on-steel clutch?
It is a centrifugal clutch designed to reduce slippage and provide reliable power transfer under heavy loads.

What is the fully lined drive shaft?
The internal shaft lining helps provide smoother operation and reduced vibration.

Does the STIHL FS 251 R have protected control cables?
Yes. The cables are enclosed to reduce snagging and accidental damage.

Is the spark plug protected?
Yes. It is shielded from damage while remaining accessible for service.

Is the choke lever protected?
Yes. The choke control is positioned to help prevent impact damage.

What is the protected spark-arrestor muffler?
It includes baffles to reduce noise and a screen designed to limit the release of sparks.

What is the upright translucent fuel tank?
The clear tank makes it easier to check the fuel level and refill the machine.

What is the high-tech polymer housing?
The housing uses lightweight, impact-resistant and corrosion-resistant polymer materials.

How much does the STIHL FS 251 R weigh?
The listed tool weight is approximately 14.6 lb.

Does the listed weight include fuel and the cutting attachment?
The supplied information does not specify this clearly. Actual operating weight will depend on the fuel level and installed attachment.

Is the STIHL FS 251 R suitable for large properties?
Yes. Its 41.6cc engine, 16.5-inch cutting width and professional construction make it suitable for large properties and commercial work.

Is it suitable for confined areas?
Yes. The loop handle makes it easier to maneuver between bushes, around trees and in narrow spaces.

Is the STIHL FS 251 R suitable for continuous professional use?
Yes. It is built for demanding professional mowing and vegetation-clearing applications.

Is the STIHL FS 251 R suitable for noise-sensitive areas?
It is a powerful gas machine, so a professional battery trimmer may be better where reduced noise is essential.

Does the STIHL FS 251 R produce exhaust emissions?
Yes. It is gas powered, although its engine is designed to reduce emissions and fuel consumption.

What maintenance does the STIHL FS 251 R require?
Routine care includes checking the air filter, spark plug, fuel system, clutch, drive shaft, cutting attachment, guard and starter.

Should the cutting attachment be inspected before use?
Yes. Check the head or blade for wear, cracks, damage and secure installation before each job.

What protective equipment should be worn?
Wear eye and face protection, hearing protection, gloves, long pants, sturdy boots and suitable protective clothing.

Are the listed dimensions complete?
No. The secondary table does not provide usable width, height or weight values and lists the length as zero. Those entries should be removed or corrected before publishing.

What are the main benefits of the STIHL FS 251 R?
Its main benefits include a powerful 41.6cc engine, loop-handle maneuverability, ElastoStart, IntelliCarb technology and an extended-service air filter.

Where can I buy the STIHL FS 251 R trimmer in Canada?
The STIHL FS 251 R trimmer is available in store from Arns Equipment in Calgary or online across Canada at arns.ca.