Features
- STIHL ElastoStart™ –
  
  The ElastoStart™ starter handle is an exclusive 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.
- Fuel and oil caps with retainers –
  
  The fuel and oil cap retainers keep the caps attached to the unit for added convenience.
- Side-Access Chain Tensioner –
  
  The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.
- Anti-Vibration System –
  
  STIHL has developed 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.
- Ematic™ Lubrication System –
  
  The Ematic™ guide bar, when used with STIHL OILOMATIC® saw chain, will provide proper lubrication and less oil consumption than conventional methods. The system works because two ramps, strategically placed in the guide bar rail, help contain the flow of oil and direct all lubrication to the sliding faces of the bar and chain links as well as the rivets and driver holes, which in turn can reduce bar oil consumption up to 50%.
- Wrap handle version (R) with extended chip deflector on sprocket cover –
  
  Features a wrap handle with extended chip deflector on sprocket cover
- Wrap Handle (R) –
  
  Saw can be used in multiple positions for felling or limbing with hands in the proper positions.
- Decompression Valve –
  
  The decompression valve, also referred to as ‘deco’ or ‘deco valve’, vents compression in the cylinder for easier starting. The decompression valve temporarily reduces the compression in the combustion chamber during cranking and helps reduce the effort needed to pull the starter rope. It is opened manually and closes automatically as soon as the engine fires.
- Simplified Starting Procedure –
  
  Saves the user time and reduces the chance of flooding the engine when starting.
- Ease of use –
  
  A user-friendly tool for a variety of tasks.
- New generation MDG 1 Diagnostic Software –
  
  Allows dealers to quickly identify where service might be needed. Diagnostic software
- Quick acceleration –
  
  Quick acceleration helps deliver excellent cutting performance.
- Unique bumper spike design –
  
  Unique bumper spike design ensures pros can expect optimal performance regardless of what species of tree they’re cutting.
- Lightweight sprocket cover with captive bar nuts –
  
  Bar nuts secure the bar and sprocket cover.
- Sensor-controlled fuel metering –
  
  Sensor-controlled fuel metering delivers the right amount of fuel.
- Power-to-weight ratio –
  
  Allows users to get more done by minimizing fatigue.
- HD2 Air Filter –
  
  The HD2 air filter on this unit is washable, providing extremely long filter life and lowering maintenance costs. The large surface area allows for longer run times between cleanings and high performance even while operating in dusty and dry conditions. Overall, the HD2 air filter provides better protection of the engine compared to standard air filters.
- –
  
  When used with STIHL OILOMATIC ® saw chain and STIHL Ematic ™ guide bars, the high output oiler can supply additional lubrication if needed for longer guide bars and/or dry/dusty cutting conditions.
- Quarter Turn Lock on the Air Filter Shroud –
  
  The quarter-turn shroud lock provides quick access, so users can quickly and efficiently service the chain saw with minimal down time on the job.

Specifications

POWER SOURCE	Gas
POWERHEAD WEIGHT	14.8 lbs.
GUIDE BAR LENGTH (Recommended)	25 in.
OILOMATIC® CHAIN	3/8″ RS3
CHAIN OIL CAPACITY	11 oz.
ENGINE POWER	6.7 bhp
FUEL CAPACITY	26.5 oz.
DISPLACEMENT	79.2 cc

Note: STIHL recommends 3624 005 0084 (33 RS3 84) OILOMATIC® saw chain and 3003 000 4030 25” Ematic™ guide bar combination. Compatible guide bar ranges: 16″ to 36″

Warnings and Safety

Note: 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.

* The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.

Proposition 65 Warning: Cancer and Reproductive Harm

IMPORTANT SAFETY INFORMATION The occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws) and §30 of UL 1662/ ANSI Standard B175.1 (electric chainsaws). Ask your STIHL dealer about safe operating procedures and the advantages of the STIHL Quickstop® chain brake, STIHL Quickstop® Plus additional chain braking feature, STIHL reduced kickback bars and STIHL low-kickback saw chains.

STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws.

WARNING! 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.

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MS 500¡ R

STIHL ElastoStart™ –

Fuel and oil caps with retainers –

Side-Access Chain Tensioner –

Anti-Vibration System –

Ematic™ Lubrication System –

Wrap handle version (R) with extended chip deflector on sprocket cover –

Wrap Handle (R) –

Decompression Valve –

Simplified Starting Procedure –

Ease of use –

New generation MDG 1 Diagnostic Software –

Quick acceleration –

Unique bumper spike design –

Lightweight sprocket cover with captive bar nuts –

Sensor-controlled fuel metering –

Power-to-weight ratio –

HD2 Air Filter –

–

Quarter Turn Lock on the Air Filter Shroud –

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