Husqvarna 3120 Workshop Manual

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Husqvarna 3120 Workshop Manual for the service and repair of the Husqvarna 3120 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 Workshop Manual Repair

Husqvarna 3120 Workshop Manual for the Repair and service of the Husqvarna 3120 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 chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 3120 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 Chainsaw Specifications

Pitch .404″
Gauge .063″ (1.6mm)
Cylinder displacement 7.3 cu.inch / 118.8 cc
Power 8.4 hp / 6.2 kW
Max RPM 9,000
Fuel tank volume 2.64 US pint / 1.25 liter
Oil tank volume 1.48 US pint / 0.70 liter
Weight (powerhead only) 22.9 lbs / 10.4 kg
Recommended Bar lengths 24″ – 72″

Read the Husqvarna 3120 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.

A monster of a chainsaw. The 3120 is the largest and most powerful chainsaw available form Husqvarna. If you need to run a very long bar (50″+) or do some serious chainsaw milling, this is your saw.

Husqvarna 3120 Workshop Manual PDF

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