Husqvarna 3120 XP Workshop Service Manual


Husqvarna 3120 XP Workshop Manual for the service and repair of the Husqvarna 3120 XP chainsaw. View pages online or download a complete PDF manual with clear easy to understand images, diagrams and information. Print or save to any device.


Husqvarna 3120 XP Workshop Manual Repair

Husqvarna 3120 XP Workshop Manual for the Repair and service of the Husqvarna 3120 XP chainsaw. The PDF workshop service manual has accurate, easy to understand information and diagrams to help repair and service the chainsaw. Service Information to help you to troubleshoot, repair and fix the Husqvarna 3120 XP chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 3120 XP Workshop Manual Contents

Contents, Introduction, Safety Regulations, Symbols, Technical data, Service tools, Service data, Safety equipment, Starter, Electrical system, Centrifugal clutch, Lubrication system, Carburetor, Tank unit, Anti-vibration system, Piston and cylinder, Crankcase and crankshaft, Troubleshooting, Repair Instructions.


Carburetor – General Chainsaw Adjustment

Adjusting the carburettor involves adjusting the engine to the local conditions e.g. climate, altitude, fuel and type of two-stroke oil. The carburettor is equipped with three adjustment options.
L = Low speed jet
H = High speed jet
T = Idling adjustment screw

The L and H jets adjust the fuel flow to match the airflow that the throttle valve opening allows. Turning them clockwise makes the fuel/air mixture weaker (less fuel in relation to the amount of air) and turning them anti-clockwise makes the fuel/air mixture richer. A weak mixture increases the engine speed and a rich mixture decreases the engine speed. The T screw controls the throttle position when idling. Turning the T screw clockwise gives faster idling; turning it anti-clockwise lowers idling speed (see manual for complete guide).

See the complete service workshop manual, carburetor manual, parts list, operator manual and technical supplements PDF downloads. Also the repair and service articles available on this website for more information on how to service, repair and find parts for the chainsaw.

Husqvarna 3120 XP Chainsaw Specifications

Cylinder displacement 118.8 cm³
Cylinder displacement 7.25 cu.inch
Power output 8.31 hp
Maximum power speed 9 000 RPM
Fuel tank volume 2.64 US pint
Fuel consumption 570 g/kWh
Idling speed 2 500 RPM
Spark plug Champion RCJ7Y, NGK BPMR7A
Electrode gap 0.02”
Torque (max) 7.7 Nm
Weight (without cutting equipment) 22.9 lbs
Size (Length x Width x Height) 18.5 x 11.2 x 13.6”
Recommended bar length (min) 24” (60 cm)
Recommended bar length (max) 42” (106 cm)
Oil tank volume 1.48 US pint
Oil pump type Automatic
Oil pump capacity (min) 30 ml/min
Oil pump capacity (max) 54 ml/min
Sound (LWA) 116 dB(A)
Equivalent vibration level (ahv, eq) front handle 6.7 m/s²
Equivalent vibration level (ahv, eq) rear handle 7.8 m/s²


  • X-Torq
  • LowVib
  • Adjustable oil pump
  • Quick-release air filter
  • Magnesium crankcase
  • Three-piece crankshaft
  • Inertia activated chain brake
  • Smart Start
  • Felling Marks

Read the Husqvarna 3120 XP Workshop Manual for more chainsaw specs.

WARNING: This saw chain is capable of some serious kickback, that could result in serious (i.e lethal) injury to the chainsaw operator or bystanders. Do not use this chain unless you have experience and specialized training for dealing with kickback.

Husqvarna’s largest chainsaw is one of the most powerful in the world. The primary applications for the 3120 XP are extreme logging, portable sawmills, and stump work. This saw is designed to pull on the longest bars – up to six feet! . The 3120XP comes with Smart Start and well-developed anti-vibration features and ergonomics, this large-size saw is both easy to start and operate. Double acting chain brake, right hand guard and chain catcher make the saw safer to use.

Husqvarna 3120 XP Workshop Manual PDF

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