Cylinder displacement
Output shaft power1
Chain speed at max power
Product Options
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.
Professional 71cc chainsaw for demanding heavy-duty forestry work
Features

Optimal chip ejection avoids clogging
Specialized clutch cover design optimizes chip ejection.

Better manoeuvrability gives full control
Lowered handle gives better control

Air Injection filters 98% of incoming dust
Filters sawdust, grit and dirt effectively.

10 times quicker air/fuel mix adjustment
Correct engine setting and optimal performance

Low vibrations
Handles separated from engine

Soft cut-out system
Cut-out system prevents over-revving

Fuel Indicator
Transparent fuel indicator makes it easy to check fuel level

Flip-Up Fuel Cap
Flip-up fuel tank caps are easy to open and secure.

Felling sight to last a lifetime
Perfect sight critical for felling.

AutoTune
Automatic engine setting with AutoTune

Magnesium crankcase
Magnesium crankcase designed for professional use

Smart Start® Technology
Specially-designed engine and starter for easy and fast starting with minimum effort

Powerful and Efficient X-TORQ® Engine
X-Torq® engine cuts emissions and fuel consumption
Specifications
20" RSN 3/8" 1,3 mm C83 SKU: 966 73 39‑06 | ||||||
---|---|---|---|---|---|---|
Engine | 20" RSN 3/8" 1,3 mm C83 SKU: 966 73 39‑06 | 20" RSN 3/8" 1,5 mm C85 SKU: 966 73 39‑07 | 24" RSN 3/8" 1,3 mm C83 SKU: 966 73 39‑08 | 24" RSN 3/8" 1,5 mm C85 SKU: 966 73 39‑09 | 28" RSN 3/8" 1,3 mm C83 SKU: 966 73 39‑10 | 28" RSN 3/8" 1,5 mm C85 SKU: 966 73 39‑11 |
Chain speed at max power | 67.9 fts | 67.9 fts | 67.9 fts | 67.9 fts | 67.9 fts | 67.9 fts |
Cylinder displacement | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ | 70.6 cm³ |
Output shaft power1 | 5 hp | 5 hp | 5 hp | 5 hp | 5 hp | 5 hp |
Torque, max. | 4.2 Nm | 4.2 Nm | 4.2 Nm | 4.2 Nm | 4.2 Nm | 4.2 Nm |
Torque, max. at rpm | 6,900 rpm | 6,900 rpm | 6,900 rpm | 6,900 rpm | 6,900 rpm | 6,900 rpm |
Clutch engagement speed (±120) | 3,800 rpm | 3,800 rpm | 3,800 rpm | 3,800 rpm | 3,800 rpm | 3,800 rpm |
Electrode gap | 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 |
Ignition module air gap | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in |
Maximum power speed | 9,300 rpm | 9,300 rpm | 9,300 rpm | 9,300 rpm | 9,300 rpm | 9,300 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 |
Spark Plug | 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 |
Pitch | 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 |
Chain type | C83 | C85 | C83 | C85 | C83 | C85 |
Bar length | 50 cm | 50 cm | 60 cm | 60 cm | 70 cm | 70 cm |
Bar length (inch) | 20 in | 20 in | 24 in | 24 in | 28 in | 28 in |
Sprocket type | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 |
Gauge | .050" | .058" | .050" | .058" | .050" | .058" |
Dimensions | ||||||
Weight (excl. cutting equipment) | 14.3 lbs | 14.3 lbs | 14.3 lbs | 14.3 lbs | 14.3 lbs | 14.3 lbs |
Sound and noise | ||||||
Sound pressure level at operators ear | 105 dB(A) | 105 dB(A) | 105 dB(A) | 105 dB(A) | 105 dB(A) | 105 dB(A) |
Sound power level, guaranteed (LWA) | 119 dB(A) | 119 dB(A) | 119 dB(A) | 119 dB(A) | 119 dB(A) | 119 dB(A) |
Sound power level, measured | 117 dB(A) | 117 dB(A) | 117 dB(A) | 117 dB(A) | 117 dB(A) | 117 dB(A) |
Vibration | ||||||
Equivalent vibration level (ahv, eq) rear handle | 5.3 m/s² | 5.3 m/s² | 5.3 m/s² | 5.3 m/s² | 5.3 m/s² | 5.3 m/s² |
Equivalent vibration level (ahv, eq) front handle | 5.2 m/s² | 5.2 m/s² | 5.2 m/s² | 5.2 m/s² | 5.2 m/s² | 5.2 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 |
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 |
Emission | ||||||
Exhaust emissions (CO₂ EU V)2 | 804 g/kWh | 804 g/kWh | 804 g/kWh | 804 g/kWh | 804 g/kWh | 804 g/kWh |
Reviews
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.