Stihl MS251 18" Chainsaw

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Stihl MS251 18" Chainsaw Description

The Stihl MS251 18" Chainsaw is a rugged and durable chainsaw for small felling jobs and grounds maintenance. Side mounted chain tensioning and economical 2-MIX Engine. 

Stihl MS251 18" Chainsaw Features

Reduced-emission engine technology - 2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle. This results in more power with a lower weight, up to 20% lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.

Compensator - This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.

Pre-separation air filtration system - STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct.

Anti-vibration system - Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.

Ematic chain lubrication system - The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.

Single-lever master control - All important functions such as start, choke, throttle and stop are operated via a single lever.

Side chain tensioner - The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.

Tool free filler caps - Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.

Stihl MS251 18" Chainsaw Specification

Model MS251

Bar Length  18" (46cm)

Displacement 45.6cm3

Power Output 2.2kW

Weight 4.9kg

Power-to-weight ratio 2.2kg/kw

Sound Pressure Level 102dB(A)

Sound Power Level 113dB(A)

Vibration Values (L/R) 3.9/3.9m/s2

STIHL Oilomatic saw chain pitch/type .325" RM

Warranty 2 Years

Stihl MS251 18" Chainsaw Arrange a Consultation

The Stihl MS251 18" Chainsaw is a rugged and durable chainsaw for small felling jobs and grounds maintenance. Side mounted chain tensioning and economical 2-MIX Engine. 

Reduced-emission engine technology - 2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle. This results in more power with a lower weight, up to 20% lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.

Compensator - This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.

Pre-separation air filtration system - STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct.

Anti-vibration system - Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.

Ematic chain lubrication system - The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.

Single-lever master control - All important functions such as start, choke, throttle and stop are operated via a single lever.

Side chain tensioner - The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.

Tool free filler caps - Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.

Model MS251

Bar Length  18" (46cm)

Displacement 45.6cm3

Power Output 2.2kW

Weight 4.9kg

Power-to-weight ratio 2.2kg/kw

Sound Pressure Level 102dB(A)

Sound Power Level 113dB(A)

Vibration Values (L/R) 3.9/3.9m/s2

STIHL Oilomatic saw chain pitch/type .325" RM

Warranty 2 Years