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Features
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Air Injection
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X-Torq®
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Combined choke/stop control
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Two mass principle
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Tool less chain tensioning
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Smart Start®
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Easy starting
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TrioBrake™
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Quick-release air filter
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Felling marks
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Three-piece crankshaft
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Visible fuel level
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Adjustable oil pump
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Quick chain adjustments
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AutoTune
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Retained bar nuts
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Rope attachment
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Teardrop design
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RevBoost™
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| Engine specification |
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Cylinder displacement
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2.3 cu.inch / 38.2 cm³
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2.3 cu.inch / 38.2 cm³
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2.3 cu.inch / 38.2 cm³
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2.5 cu.inch / 40.9 cm³
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2.5 cu.inch / 40.9 cm³
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2.8 cu.inch / 45.7 cm³
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2.8 cu.inch / 45.7 cm³
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3.06 cu.inch / 50.2 cm³
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3.4 cu.inch / 55.5 cm³
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3.68 cu.inch / 60.3 cm³
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4 cu.inch / 65.1 cm³
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3.6 cu.inch / 59.8 cm³
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4.14 cu.inch / 67.9 cm³
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2.15 cu.inch / 35.2 cm³
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2.4 cu.inch / 39 cm³
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3.06 cu.inch / 50.1 cm³
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3.06 cu.inch / 50.1 cm³
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3.45 cu.inch / 56.5 cm³
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3.65 cu.inch / 59.8 cm³
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4.48 cu.inch / 73.5 cm³
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5.36 cu.inch / 87.9 cm³
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5.7 cu.inch / 93.6 cm³
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7.3 cu.inch / 118.8 cm³
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Power output
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1.9 hp / 1.4 kW
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2 hp / 1.5 kW
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2 hp / 1.5 kW
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2.2 hp / 1.6 kW
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2.4 hp / 1.8 kW
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2.8 hp / 2.1 kW
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2.8 hp / 2.1 kW
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3.2 hp / 2.4 kW
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3.5 hp / 2.6 kW
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3.7 hp / 2.7 kW
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4.6 hp / 3.4 kW
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4.2 hp / 3.1 kW
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4.9 hp / 3.6 kW
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2.01 hp / 1.5 kW
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2.3 hp / 1.7 kW
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3.7 hp / 2.7 kW
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3.62 hp / 2.7 kW
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4.4 hp / 3.2 kW
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4.7 hp / 3.5 kW
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5.7 hp / 4.2 kW
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6.5 hp / 4.8 kW
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7.1 hp / 5.2 kW
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8.4 hp / 6.2 kW
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Idling speed
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3000 rpm
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3000 rpm
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3000 rpm
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2900 rpm
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2900 rpm
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2700 rpm
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2700 rpm
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2700 rpm
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2700 rpm
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2700 rpm
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2700 rpm
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2800 rpm
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2700 rpm
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2900 rpm
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2800 rpm
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2700 rpm
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2700 rpm
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2700 rpm
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2800 rpm
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2700 rpm
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2700 rpm
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2500 rpm
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2500 rpm
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Maximum power speed
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9000 rpm
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9000 rpm
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9000 rpm
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9000 rpm
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9000 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9000 rpm
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9000 rpm
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9000 rpm
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9600 rpm
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9600 rpm
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10000 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9600 rpm
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9000 rpm
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Cylinder bore
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1.57 inch / 40 mm
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1.57 inch / 40 mm
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1.57 inch / 40 mm
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1.61 inch / 41 mm
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1.65 inch / 42 mm
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1.65 inch / 42 mm
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1.65 inch / 42 mm
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1.73 inch / 44 mm
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1.8 inch / 47 mm
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1.8 inch / 47 mm
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1.89 inch / 48 mm
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1.8 inch / 46 mm
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1.93 inch / 49 mm
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1.57 inch / 40 mm
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1.57 inch / 40 mm
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1.73 inch / 44 mm
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1.73 inch / 44 mm
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1.81 inch / 46 mm
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1.81 inch / 46 mm
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2.01 inch / 51 mm
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2.17 inch / 55 mm
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2.2 inch / 56 mm
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2.36 inch / 60 mm
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Cylinder stroke
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1.26 inch / 32 mm
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1.26 inch / 32 mm
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1.26 inch / 32 mm
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1.22 inch / 31 mm
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1.22 inch / 31 mm
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1.3 inch / 33 mm
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1.3 inch / 33 mm
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1.3 inch / 33 mm
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1.3 inch / 32 mm
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1.3 inch / 32 mm
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1.42 inch / 36 mm
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1.4 inch / 36 mm
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1.42 inch / 36 mm
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1.1 inch / 28 mm
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1.22 inch / 31 mm
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1.28 inch / 32.5 mm
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1.28 inch / 32.5 mm
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1.34 inch / 34 mm
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1.42 inch / 36 mm
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1.42 inch / 36 mm
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1.46 inch / 37 mm
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1.5 inch / 38 mm
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1.65 inch / 42 mm
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Ignition system
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IIDA
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IIDA
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IIDA
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Walbro MBU-33
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Walbro MBU-33
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Walbro MB
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Walbro MB
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Walbro MB
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SEM AM50
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SEM AM50
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SEM AM50
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SEM AM50
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Ikeda Denso
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SEM AM50
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SEM AM50
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SEM AM50COT
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SEM AM50
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SEM AM50COT
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SEM AM50COT
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SEM AM50
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SEM AM50
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Ignition module air gap
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0.02 " / 0.5 mm
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0.02 " / 0.4 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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0 " / 0.3 mm
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0.01 " / 0.3 mm
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0.02 " / 0.5 mm
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0 " / 0.3 mm
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0.01 " / 0.3 mm
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0.01 " / 0.3 mm
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Spark plug
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NGK BPMR7A, Champion RCJ7Y
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Champion RCJ7Y
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Champion RCJ7Y
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Champion RCJ7Y, NGK BPMR7A
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NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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NGK CMR6H
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NGK BPMR7A
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NGK CMR7H
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Champion RCJ7Y, NGK BPMR7A
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NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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Champion RCJ7Y, NGK BPMR7A
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NGK CMR6H
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NGK BPMR7A, Champion RCJ7Y
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Champion RCJ7Y, NGK BPMR7A
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NGK BPMR7A, Champion RCJ6Y
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Champion RCJ7Y, NGK BPMR7A
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Electrode gap
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0 " / 0.5 mm
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0.02 " / 0.5 mm
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0.03 " / 0.65 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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0.02 " / 0.5 mm
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Carburettor model name
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ZAMA W-33
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ZAMA W-33
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ZAMA W-33
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Zama EL41
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Zama EL41
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C1M/X5131
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C1M/X5131
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C1M/X5131
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Walbro WTA
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Walbro WTA
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C3M-EL2B
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ZAMA CIM-EL28
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WT804
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C1Q-EL33
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C3-EL32
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C3-EL32
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HDA174
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ZAMA C1M-EL40
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WJ-116
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HS300A
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WG8
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Fuel tank volume
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0.14 US pint / 0.3 litre
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0.14 US pint / 0.3 litre
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0.14 US pint / 0.3 litre
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0.18 US pint / 0.37 litre
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0.78 US pint / 0.37 litre
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0.95 US pint / 0.45 litre
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0.95 US pint / 0.45 litre
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0.95 US pint / 0.45 litre
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0.9 US pint / 0.44 litre
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0.9 US pint / 0.44 litre
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1.62 US pint / 0.77 litre
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1.4 US pint / 0.65 litre
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1.48 US pint / 0.7 litre
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0.55 US pint / 0.26 litre
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0.72 US pint / 0.34 litre
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1.06 US pint / 0.5 litre
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1.06 US pint / 0.5 litre
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1.44 US pint / 0.68 litre
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1.4 US pint / 0.65 litre
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1.48 US pint / 0.7 litre
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1.9 US pint / 0.9 litre
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1.9 US pint / 0.9 litre
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2.64 US pint / 1.25 litre
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Oil tank volume
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0.09 US pint / 0.2 litre
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0.09 US pint / 0.2 litre
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0.09 US pint / 0.2 litre
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0.12 US pint / 0.25 litre
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0.53 US pint / 0.25 litre
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0.55 US pint / 0.26 litre
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0.55 US pint / 0.26 litre
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0.55 US pint / 0.26 litre
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0.7 US pint / 0.32 litre
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0.7 US pint / 0.32 litre
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0.84 US pint / 0.4 litre
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0.7 US pint / 0.33 litre
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0.78 US pint / 0.37 litre
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0.36 US pint / 0.17 litre
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0.32 US pint / 0.15 litre
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0.59 US pint / 0.28 litre
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0.59 US pint / 0.28 litre
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0.8 US pint / 0.38 litre
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0.7 US pint / 0.35 litre
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0.78 US pint / 0.37 litre
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1.06 US pint / 0.5 litre
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1.1 US pint / 0.5 litre
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1.48 US pint / 0.7 litre
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Oil pump type
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Fixed flow
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Fixed flow
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Fixed flow
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Fixed flow
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Fixed flow
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Fixed flow
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Fixed flow
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Fixed flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Automatic
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Adjustable flow
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Oil pump capacity
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8-8 ml/min
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8-8 ml/min
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8-8 ml/min
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13-13 ml/min
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13-13 ml/min
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9-9 ml/min
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9-9 ml/min
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9-9 ml/min
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6-17 ml/min
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6-17 ml/min
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4-20 ml/min
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6-15 ml/min
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5-22 ml/min
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3-9 ml/min
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5-9 ml/min
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6-10 ml/min
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5-12 ml/min
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5-15 ml/min
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6-15 ml/min
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5-22 ml/min
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6-24 ml/min
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14-21 ml/min
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28-51 ml/min
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Fuel consumption
| - | - | - | - | - | - | - | - | - |
440 g/kWh
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438 g/kWh
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450 g/kWh
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490 g/kWh
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Torque, max.
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3.51 Nm/6100 rpm
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2.7 Nm/7000 rpm
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2.7 Nm/7000 rpm
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5 Nm/6600 rpm
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Maximum recommended engine speed
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12500 rpm
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14100 rpm
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14000 rpm
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Air filter type
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Nylon 44µ
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Felt HD
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| Cutting equipment |
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Chain pitch
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3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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3/8" LP, 3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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3/8"
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.404"
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Recommended bar length, min-max
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13"-16" / 33-40 cm
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13"-16" / 33-40 cm
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13"-16" / 33-40 cm
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13"-18" / 33-45 cm
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13"-18" / 33-45 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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15"-28" / 38-70 cm
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13"-24" / 33-60 cm
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15"-28" / 38-71 cm
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12"-14" / 30-35 cm
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12"-16" / 30-40 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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13"-20" / 33-50 cm
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15"-28" / 38-71 cm
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15"-28" / 38-71 cm
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18"-28" / 45-70 cm
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18"-36" / 45-90 cm
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24"-42" / 60-105 cm
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Chain speed at max power
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53.48 fts / 16.3 m/s
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53.48 fts / 16.3 m/s
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53.48 fts / 16.3 m/s
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48.2 fts / 14.69 m/s
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48.2 fts / 14.69 m/s
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56.89 fts / 17.34 m/s
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56.89 fts / 17.34 m/s
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56.89 fts / 17.34 m/s
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65.62 fts / 20 m/s
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65.62 fts / 20 m/s
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67.91 fts / 20.7 m/s
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69.9 fts / 21.3 m/s
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70.21 fts / 21.4 m/s
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62.7 fts / 19.1 m/s
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60.04 fts / 18.3 m/s
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60.7 fts / 18.5 m/s
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60.7 fts / 18.5 m/s
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70.21 fts / 21.4 m/s
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69.9 fts / 21.3 m/s
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70.21 fts / 21.4 m/s
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70.2 fts / 21.4 m/s
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64.3 fts / 19.6 m/s
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65.95 fts / 20.1 m/s
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Bar mount
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Small
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Small
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Small
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Small
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Small
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Small
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Small
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Small
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Small
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Large
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Large
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Small
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Large
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Small
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Small
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Small
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Small
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Small
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Large
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Large
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Large
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Large
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Large
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| Emission, vibration & noise data |
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Equivalent vibration level (ahv , eq) front / rear handle
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2.1/2.7 m/s²
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2.1/2.7 m/s²
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2.1/2.7 m/s²
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2.5/3.2 m/s²
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2.5/3.2 m/s²
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1.9/2.6 m/s²
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2.8/3.3 m/s²
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2.3/2.7 m/s²
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3.4/4.5 m/s²
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4.9/4.3 m/s²
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3.6/3.5 m/s²
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2.7/3.2 m/s²
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3.2/3.4 m/s²
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4.1/3.9 m/s²
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3/3.5 m/s²
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2.4/3.6 m/s²
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2.4/3.6 m/s²
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3.9/4.2 m/s²
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2.7/3.2 m/s²
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3.2/3.4 m/s²
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6.4/10.2 m/s²
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7.7/10.6 m/s²
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Sound pressure level at operators ear
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100.7 dB(A)
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100.7 dB(A)
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100.7 dB(A)
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102 dB(A)
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102 dB(A)
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103.3 dB(A)
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103.3 dB(A)
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103.5 dB(A)
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104 dB(A)
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104 dB(A)
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102.5 dB(A)
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106 dB(A)
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107 dB(A)
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103 dB(A)
|
100 dB(A)
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106 dB(A)
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106 dB(A)
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101 dB(A)
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106 dB(A)
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107 dB(A)
| - |
102 dB(A)
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101 dB(A)
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Sound power level, guaranteed (LWA)
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113 dB(A)
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113 dB(A)
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113 dB(A)
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114 dB(A)
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114 dB(A)
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114 dB(A)
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114 dB(A)
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115 dB(A)
|
113 dB(A)
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114 dB(A)
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112 dB(A)
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118 dB(A)
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115 dB(A)
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114 dB(A)
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112 dB(A)
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114 dB(A)
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114 dB(A)
|
114 dB(A)
|
118 dB(A)
|
116 dB(A)
| - |
115 dB(A)
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116 dB(A)
|
| Overall dimensions |
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Weight (excl. cutting equipment)
|
10.3 lbs / 4.7 kg
|
10.3 lbs / 4.7 kg
|
10.36 lbs / 5 kg
|
9.78 lbs / 4.4 kg
|
9.78 lbs / 4.4 kg
|
11.33 lbs / 5.1 kg
|
11.24 lbs / 5.1 kg
|
11.33 lbs / 5.1 kg
|
12.8 lbs / 5.8 kg
|
12.8 lbs / 5.8 kg
|
13 lbs / 6 kg
|
12.35 lbs / 5.6 kg
|
15 lbs / 6.8 kg
|
7.5 lbs / 3.4 kg
|
7.7 lbs / 3.5 kg
|
11 lbs / 5 kg
|
11.4 lbs / 5.2 kg
|
12.1 lbs / 5.5 kg
|
12.57 lbs / 5.7 kg
|
14.99 lbs / 6.8 kg
|
15.4 lbs / 7 kg
|
17.4 lbs / 7.9 kg
|
22.9 lbs / 10.4 kg
|
| Emission data EPA |
|
Exhaust emissions (HC average)
| - | - | - | - | - | - | - | - | - | - | - |
60.37 g/kWh
| - | - | - | - |
124 g/kWh
| - |
56 g/kWh
| - |
103 g/kWh
| - | - |
|
Exhaust emissions (CO average)
| - | - | - | - | - | - | - | - | - | - | - |
253.42 g/kWh
| - | - | - | - |
397.5 g/kWh
| - |
241 g/kWh
| - |
387 g/kWh
| - | - |
|
Exhaust emissions (NOx average)
| - | - | - | - | - | - | - | - | - | - | - |
3.38 g/kWh
| - | - | - | - |
1.5 g/kWh
| - |
4.8 g/kWh
| - |
1.4 g/kWh
| - | - |
|
Exhaust emissions (CO₂ average)
| - | - | - | - | - | - | - | - | - | - | - |
900.62 g/kWh
| - | - | - | - |
767.5 g/kWh
| - |
802 g/kWh
| - |
717 g/kWh
| - | - |
|
Exhaust emissions (CO FEL)
| - | - | - | - | - | - | - | - | - | - | - |
603 g/kWh
| - | - | - | - | - | - | - | - | - | - | - |