Husqvarna 45 Specifications

Husqvarna 45 Specifications

The Husqvarna 45 chainsaw was manufactured by Husqvarna Vapenfabriks AB in Huskvarna, Sweden, and was introduced in 1987. It quickly became a popular choice among both professional and amateur users due to its reliable performance and lightweight design.

The chainsaw was constructed with a die-cast magnesium and injection-molded polymer body, weighing in at just 4.7 kg (10.8 lbs.) for the powerhead only. The manufacturer advertised H.P. for the 44ccm (2.7 cu. in.) engine was 2.7 hp (2.0 kW), making it a powerful tool for its size. The Husqvarna 45 chainsaw was equipped with a centrifugal clutch, an anti-vibration handlebar system, and an inertia-activated chain brake for added safety. It was also designed with an automatic oil pump, which made maintenance and operation easier for users.

The Husqvarna 45 was discontinued in 1995, leaving behind a legacy of quality and durability that endures to this day.

Specifications Chart

Manufactured byHusqvarna Vapenfabriks AB, Huskvarna, Sweden
Year introduced1987
Year discontinued1995
Engine displacement44ccm (2.7 cu. in.)
Cylinder bore42mm (1.65 in.)
Piston stroke32mm (1.26 in.)
Piston ring thickness1.5 mm
Cylinder typeAluminum with chrome plated bore
Intake methodPiston ported
The manufacturer advertised H.P.2.7 hp (2.0 kW)
Weight4.7 kg (10.8 lbs.), powerhead only
Handlebar systemAnti-vibration
Chain brakeInertia activated
Drive TypeDirect
ConstructionDie-cast magnesium, injection-molded polymer
Magneto typeElectronic, Phelon
CarburetorWalbro WT-17A, 17D, Zama C1Q-EL1, C1Q-EL5
Major repair kitK20-WAT for Walbro, RB-45 for Zama
Minor repair kitD10-WAT for Walbro
GND-33 for Zama
Air filter systemNylon mesh cartridge
Starter typeHusqvarna automatic rewind
Oil pumpAutomatic
Maximum engine RPM12,500 max free after break-in, with bar and chain
Maximum engine RPM 2Installed, 9,000 under load.
Idle RPM2,500
Ignition timingFixed
Breaker point settingNone
Flywheel/coil air gap0.30 mm (0.012 in.)
Spark plug typeBosch WSR7F/WS7F, NGK BPMR7A, Champion RCJ7Y
Spark plug gap0.5mm (0.020 in.)
Crankshaft main bearingsBall
Fuel tank capacity500 ml (16.9 fl. oz.)
Fuel oil ratio50:1
Recommended fuel octaneRegular
Mix oil specificationHusqvarna two-stroke chainsaw mix oil or equivalent
Oil Mix50:1 with Husqvarna mix oil
Chain pitch.325 in.
Chain typeOregon 21
Bar mount pattern01 link
Shortest guide bar supplied33cm (13 in.)
Longest guide bar supplied46cm (18 in.)
Color schemeHusqvarna orange
Illustrated parts listYes
Workshop ManualYes
Husqvarna 45 Chainsaw Specs

In conclusion, the Husqvarna 45 chainsaw was a reliable and efficient tool introduced in 1987 and discontinued in 1995. With its lightweight construction, anti-vibration handlebar system, and powerful 2.7 horsepower engine, the Husqvarna 45 was a popular choice for both professional and home users. Its durable die-cast magnesium and injection-molded polymer construction, automatic oil pump, and nylon mesh cartridge air filter system made maintenance and repair easy.


Whether used for cutting firewood or clearing trees, the Husqvarna 45 chainsaw was a dependable and versatile tool that served its users well during its production years.

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