Husqvarna 450 Workshop Manual

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Husqvarna 450 Workshop Manual for the service and repair of the Husqvarna 450 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 450 Workshop Manual Repair

Husqvarna 450 Workshop Manual for the Repair and service of the Husqvarna 450 chainsaw (including Rancher). 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 450 chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 450 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 450 Chainsaw Specifications

Cylinder displacement: 50.2 cm³
Power output: 3.2 hp
Maximum power speed: 9000 rpm
Fuel tank volume: 0.95 US pint
Fuel consumption: 504 g/kWh
Idling speed: 2700 rpm
Spark plug: NGK BPMR7A, Champion RCJ7Y
Electrode gap: 0.02 in
Torque, max: 2.6 Nm
Recommended bar length, max: 20 inches
Recommended bar length, min: 13 inches
Chain speed at max power: 56.76 fts
Weight: 10.8 pounds
Oil tank volume: 0.55 US pint
Oil pump Type: Fixed flow
Capacity Max: 13 ml/min
Capacity Min: 13 ml/min
Sound:
Power level, guaranteed: (LWA) 115 dB(A)
Power level, measured: 113 dB(A)
Pressure level at operators ear 104: dB(A)
Equivalent vibration level (ahv, eq) front handle: 3.1 m/s²
Equivalent vibration level (ahv, eq) rear handle: 4.9 m/s²

Read the Husqvarna 450 Workshop Manual for more chainsaw specs.

The Husky 450 chainsaw is a professional-quality machine with a tightly engineered saw, a high-torque engine, a smart start system that makes it easy to get up and go, safety features that ensure you won’t hurt yourself while using it, and the kind of power you’d need from a chain saw meant to do everything. This 450 chainsaw is great all-round chainsaw. Light to Semi-heavy cutting power, that is excellent for casual use.

Pros

  • Decent power – enough for homeowners
  • Good cutting ability with high RPM
  • Easy to handle
  • Low vibration and minimal kickback
  • Solid construction
  • Efficient engine
  • CARB compliant

Cons

  • Needs some getting used to
  • Not suitable for full-on professional work

450 Features

  • Smart Start – helps the chainsaw to start quickly with little effort
  • Automatic oiler delivers a steady supply of chain lubrication for safe and effective use
  • Side-mounted tensioning system – allows for quick adjustments while working
  • LowVib anti-vibration system – reduces vibration levels for the operator
  • 3.2-HP X-Torq engine – reduces fuel consumption and gas emissions
  • Quick-release air filter –  easy to clean and replace

Husqvarna 450 Workshop Manual PDF

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