Husqvarna 340 Workshop Service Manual

Husqvarna 340 Workshop Manual Repair

Husqvarna 340 Workshop Manual for the Repair and service of the Husqvarna 340 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 340 chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 340 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 340 Chainsaw Specifications

ENGINE DISPLACEMENT: 40cc (2.4 cu. in.)
CYLINDER BORE: 40mm (1.575 in.)
PISTON STROKE: 32mm (1.260 in.)
CYLINDER TYPE: Aluminum with a chrome-plated bore
INTAKE METHOD: Piston ported
WEIGHT: 5.5 kg with 32 cm bar & chain
Anti-vibration CHAIN BRAKE:
Mechanical CLUTCH: Centrifugal

MAGNETO TYPE: Electronic
CARBURETOR: Walbro HDC series
OIL PUMP: Automatic, adjustable
IGNITION TIMING: fixed
BREAKER POINT SETTING: none
FLYWHEEL/COIL AIR GAP: 0.3 mm (0.012 in.)
SPARK PLUG TYPE: Bosch WS7F
SPARK PLUG GAP: 0.5mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS: Ball
FUEL TANK CAPACITY: 500 ml
FUEL OIL RATIO: 40:1
RECOMMENDED FUEL OCTANE: Regular
MIX OIL SPECIFICATION: Two-stroke chain saw mix oil
SHORTEST GUIDE BAR SUPPLIED: 32cm (13 in.)
LONGEST GUIDE BAR SUPPLIED: 35 cm (15 in.)

Read the Husqvarna 340 Workshop Manual for more chainsaw specs.

Husqvarna’s classic and reliable chainsaw with  a 40 cc engine.

Husqvarna 340 Workshop Manual PDF

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