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A. IntelliCarb® compensating carburetor measures air on clean side of air filter and adjusts metering diaphragm in carburetor. Keeps RPM levels even when filter begins to clog.
B. Easy-Access Carburetor Adjustment Screws let you adjust the carburetor for local cutting conditions and altitude.
C. Smooth Clean Design has no rough edges to snag on clothing or brush.
D. STIHL QS Braking System reduces the risk of injury in some circumstances if so equipped.
E. Rear Hand Guard reduces the risk of injury, as well as providing wide area for foot placement during starting.
F. High-Tech Polymer Housings are lightweight, withstand greater impact, and are corrosion-resistant.
G. Inboard Chain Brake requires less maintenance and makes sprocket easier to remove.
H. Sprocket Cover is streamlined to reduce clogging and easy to clean.
I. Front Handle is covered for a secure grip and ergonomically angled for comfort.
J. Front Hand Guard reduces the risk of injury.
K. STIHL Quickstop® Inertia Chain Brake System is designed to quickly stop the chain. Can be manually activated or activated by inertia, if the kickback force is sufficient.
L. Automatic Chain Oiling lets operator concentrate on cutting, not on bar lubrication.
M. Quick Chain Adjuster is a toolless chain adjuster (not on all models).
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N. Chain Catcher helps reduce the risk of operator contact by a chain if it should break or derail.
O. Anti-Vibration System reduces operator fatigue.
P. STIHL OILOMATIC® Saw Chain. STIHL makes its own saw chain.
Q. Ematic™ Bar includes a polymer ramp reservoir which holds bar oil until it can be picked up by passing chain. This can reduce oil usage by up to 50%.
R. Bumper Spikes provide better control, making cutting easier.
S. Spark Arrestor Muffler has large baffles which reduce noise level and contain a screen designed to reduce the emission of sparks.
T. Toolless Fuel and Oil Caps require no tools to tighten. Cap retainers help keep cap from being lost.
U. Protected Spark Plug - protected, yet easy to change.
V. Large Starting Handle is easy to grip.
W. Air Filter Cover is easy to remove without tools for fast and easy filter cleaning or replacement.
X. Master Control LeverTM is a single lever operating the choke, starting throttle lock and on-off switch.
Y. Throttle Trigger Interlock must be depressed before the trigger can be activated.
Z. Translucent Fuel Tank and View Window allow operator to easily check fuel level before starting work.
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Additional Features
2-Ring Pistons improve engine efficiency and hold compression longer than 1-ring pistons. They transfer heat from the piston to cylinder better, helping engine stay cooler and last longer.
Catalytic Muffler reduces exhaust emissions. Available on some models.
Decompression Valve makes starting easier.
Electronic Ignition provides easier starting, faster acceleration and smoother running.
Heavy-Duty Centrifugal Clutch is designed to reduce slippage.
Long Life Cylinders give maximum wear life, better cooling and lubrication for more power output per cubic centimeter of engine displacement.
Purge Pump Primer lets you prime the carburetor without flooding it.
Replaceable "In Tank" Fuel Filters lower cost and are easy to maintain.
ElastoStartTM Handle has built-in shock absorber for smoother starting.
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Quick Chain Adjuster
Side Access Tensioner
Chain Sprockets
Ematic™ Bar Lubrication
Quickstop® Chain Brake and QS Braking System
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