Cylinder displacement
Output shaft power1
Chain speed at max power
Product Options
What's Included
Included
- Nose typeReplaceable sprocket nose
- SpikesMounted
- Chain typeC83
- Bar length (inch)20 in
Shipping & Returns
Husqvarna aims to deliver orders promptly, so changes or cancellations are not accepted once an order is placed.
Husqvarna offers a refund for online purchases if you are not satisfied, minus any shipping or restocking fees.
Warranty
At Husqvarna, we're committed to ensuring your satisfaction. Our warranty covers any defects in material or workmanship under normal use during the warranty period.
High-performance professional 71cc chainsaw for heavy-duty forestry work
Features
Specifications
20" RSN 3/8" 1,3 mm C83 SKU: 966 73 31‑06 | |||||||||||
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Engine | 20" RSN 3/8" 1,3 mm C83 SKU: 966 73 31‑06 | 20" RSN 3/8" 1,5 mm C85 SKU: 966 73 31‑07 | 24" RSN 3/8" 1,3 mm C83 SKU: 966 73 31‑08 | 24" RSN 3/8" 1,5 mm C85 SKU: 966 73 31‑09 | 28" RSN 3/8" 1,3 mm C83 SKU: 966 73 31‑11 | 28" RSN 3/8" 1,5 mm C85 SKU: 966 73 31‑12 | 28" RSN 3/8" 1,6 mm H83 SKU: 966 73 31‑13 | 32" RSN 3/8" 1,6 mm H83 SKU: 966 73 31‑14 | 24" - US Lightweight RSN - 3/8" - C83 SKU: 966 73 31‑74 | 28" - US Lightweight RSN - 3/8" - C83 SKU: 966 73 31‑78 | 32" - US Lightweight RSN - 3/8 - H83 SKU: 966 73 31‑82 |
Chain speed at max power | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts | 72.2 fts |
Cylinder displacement | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ |
Output shaft power1 | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp | 5.8 hp |
Torque, max. | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm | 4.5 Nm |
Torque, max. at rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm | 8,200 rpm |
Clutch engagement speed (±120) | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm | 3,700 rpm |
Electrode gap | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in |
Idling speed | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm | 2,700 rpm |
Ignition module air gap | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in |
Maximum power speed | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm |
Oil pump type | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle |
Spark Plug | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A | NGK BPMR7A |
Equipment | |||||||||||
Recommended bar length, min | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in |
Pitch | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" | 3/8" |
Recommended bar length, max | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in | 28 in |
Chain type | C83 | C85 | C83 | C85 | C83 | C85 | H83 | H83 | C83 | C83 | H83 |
Bar length | 50 cm | 50 cm | 60 cm | 60 cm | 70 cm | 70 cm | 70 cm | 81 cm | 60 cm | 70 cm | 80 cm |
Bar length (inch) | 20 in | 20 in | 24 in | 24 in | 28 in | 28 in | 28 in | 32 in | 24 in | 28 in | 32 in |
Sprocket type | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 |
Gauge | .050" | .058" | .050" | .058" | .050" | .058" | .063" | .063" | .058" | .058" | .058" |
Dimensions | |||||||||||
Weight (excl. cutting equipment) | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs | 14.5 lbs |
Sound and noise | |||||||||||
Sound pressure level at operators ear | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) | 107 dB(A) |
Sound power level, guaranteed (LWA) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) | 120 dB(A) |
Sound power level, measured | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) | 118 dB(A) |
Vibration | |||||||||||
Equivalent vibration level (ahv, eq) rear handle | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² |
Equivalent vibration level (ahv, eq) front handle | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² | 5 m/s² |
Lubricant | |||||||||||
Oil tank volume | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint | 0.7 US pint |
Lubricant type (Engine) | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 |
Emission | |||||||||||
Exhaust emissions (CO₂ EU V)2 | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh | 841 g/kWh |
Services
Owner support
- 1Output shaft power: Net power rating as per ISO 7293, at specified RPM
- 2Exhaust emissions (CO₂ EU V): This CO2 measurement results from testing over a fixed test cycle under laboratory conditions a(n) (parent) engine representative of the engine type (engine family) and shall not imply or express any guarantee of the performance of a particular engine.