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Specifications:

Engine specification       

Cylinder displacement   73.5 cc

Cylinder bore     2.01 inch

Cylinder stroke 1.42 inch

Power output    5.7 hp

Maximum power speed 9600 rpm

Fuel tank volume             23.67 fl oz

Fuel consumption            417 g/kWh

Idling speed       2700 rpm

Spark plug           NGK BPMR7A|Champion RCJ7Y

Electrode gap     0.02 "

Ignition system SEM AM50

Ignition module air gap  0.01 "

Torque, max.     4.5 Nm/8100 rpm

Carburetor model name                ZAMA C1M-EL28

Fuel tank volume             1.48 US pint

Lubricants          

Oil tank volume 0.85 US pint

Oil pump type   Automatic

Oil pump capacity            5-22 ml/min

Vibration & noise data  

Equivalent vibration level (ahv , eq) front / rear handle   2.9/3.7 m/s²

Sound pressure level at operators ear     105 dB(A)

Sound power level, guaranteed (LWA)    116 dB(A)

Cutting equipment         

Chain speed at max power           70.21 fts

Chain gauge       0.058 "

Chain speed at 133% of maximum engine power speed  93.5 fts

Recommended bar length, min-max        15"-28"

Bar mount           Large

Overall dimensions        

Weight (excl. cutting equipment)             14.99 lbs

Features:

Inertia activated chain brake

Reduces the likelihood of injury due to kickback.

Air Injection

Centrifugal air cleaning system removes larger dust and debris particles before reaching the air filter. This results in reduced air filter cleanings and improved engine life.

X-Torq®

Delivers lower fuel consumption and reduced exhaust emission levels in accordance with the world´s most stringent environmental regulations.

Combined choke/stop control

Allows for easier starting and reduces the risk of engine flooding.

LowVib®

System designed to reduce vibration levels to the operator, which lessens fatigue.

Smart Start®

The engine and starter have been designed so the machine starts quickly with minimum effort.

Quick-release air filter

Facilitates cleaning and replacement of the air filter.

Snap-lock cylinder cover

Saves time when changing spark plugs and cleaning.

Three-piece crankshaft

Forged three-piece crankshaft for maximum durability for the toughest applications.

Side-mounted chain tensioner

Easier access to chain tensioning device.

Adjustable oil pump

Allows you to control oil flow depending on application and weather conditions.

Front handle ergonomics

Better grip and a 7° offset handle reduces fatigue.

Heavy-Duty Air Filter

This easily accessible filter is designed to handle the high volume of airflow specific to a large professional saw.

Optimized saw body

No protruding parts, a smooth underside, rounded starter cover and well-protected controls all make the saw easy to handle.

Improved handle design

The rear handle is asymmetrically designed with comfort inserts for a more stable and less tiring grip.

Magnesium crankcase

Sturdily built crankcase withstands high rpms and tough professional use, ensuring a long service life.

Felling marks

Distinct, colored marks used for aiming the direction of timber fall.

AutoTune

AutoTune gives optimal engine performance throughout automatic engine setting. No time spent on carburetor adjustments. It compensates for different fuels, altitude, humidity, temperature and clogged air filter.