Husqvarna L77 Specifications

Husqvarna L77 Specifications

The Husqvarna L77 chainsaw was a powerful and reliable tool manufactured by Husqvarna Vapenfabriks AB. It was part of the series or assembly numbers 70, 70E, and 70F and was first introduced in 1963. With an engine displacement of 70cc (4.27 cu. in.), the L77 chainsaw was capable of delivering 4 horsepower, making it a popular choice among professionals in the forestry industry.

Constructed with die-cast magnesium, the L77 was both sturdy and lightweight, weighing 8.5 kg. It featured a rigid handlebar system, centrifugal clutch, and a direct drive type. The L77 had an automatic rewind starter type, and an automatic oil pump, making it easy to start and operate.

The chainsaw had a maximum engine RPM of 6,400 and was fueled by a 700 ml fuel tank. It used a 25:1 fuel oil ratio and regular octane fuel. The L77 chainsaw had a .404 in. chain pitch and was compatible with guide bars ranging from 33 cm (13 in.) to 45 cm (18 in.) in length.

Although the Husqvarna L77 chainsaw was a favorite of professionals in the forestry industry, it was eventually discontinued a year after its first production.


Specifications Chart

Manufactured byHusqvarna Vapenfabriks AB
Series or assembly number70, 70E, 70F
Year introduced1963
Year discontinued1964
Engine displacement70cc (4.27 cu. in.)
Cylinder bore45 mm
Piston stroke44 mm
Cylinder typeAluminum with chrome plated bore
Intake methodPiston ported
The manufacturer advertised H.P.4 hp
Weight8.5 kg
Handlebar systemRigid
Chain brakenone
Drive TypeDirect
ConstructionDie-cast magnesium
Magneto typeBosch
CarburetorTillotson HL series
Air filter systemNylon mesh cartridge
Starter typeAutomatic rewind
Oil pumpAutomatic
Maximum engine RPM6,400
Breaker point setting0.4 mm (0.016 in.)
Flywheel/coil air gapPosition is fixed
Spark plug typeBosch W 175 T1
Spark plug gap0.5 mm (0.020 in.)
Crankshaft main bearingsBall
Fuel tank capacity700 ml
Fuel oil ratio25:1
Recommended fuel octaneRegular
Mix oil specificationTwo-cycle mix oil
Chain pitch.404 in.
Bar mount pattern17 link
Shortest guide bar supplied33 cm (13 in.)
Longest guide bar supplied45 cm (18 in.)
Color schemeHusqvarna Orange and Black Enamel
Husqvarna L77 Chainsaw Specs

In conclusion, the Husqvarna L77 chainsaw was a powerful and reliable tool introduced in the early 1960s by Husqvarna Vapenfabriks AB. With a 70cc engine displacement, aluminum chrome plated bore cylinder, and automatic oil pump, this chainsaw was designed to handle heavy-duty tasks with ease. It boasted a rigid handlebar system, a direct drive type, and a centrifugal clutch, making it a popular choice among professionals and DIYers alike.

Although it was discontinued after just one year after production, the Husqvarna L77 left a lasting impression on the chainsaw industry, and its legacy lives on to this day.

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