China has already started to make reproduction (fake copies) and marketing of those saws including other brands such as Stihl,Huskvarna and more well known models.
MANUFACTURED BY:DRUZHBA,RUSSIA
ENGINE DISPLACEMENT:
NUMBER OF CYLINDERS:1
OPERATOR CONFIGURATION:One Man operation
HANDLEBAR SYSTEM:Anti-vibration
CHAIN BRAKE:none
CLUTCH:Centrifugal
DRIVE TYPE:Gear reduction
CARBURETOR:Float type
STARTER TYPE:Automatic rewind with steel cable, remove after starting
CHAIN TYPE:Scratcher
NOTE: BAR TIP IS SPRING LOADED TO ENSURE PROPER CHAIN TENSION.
Technical under investigation.
Bar has spring loaded tip. Transmission swivels for felling.
Hydraulic wedge felling assist powered by saw engine was availlable as an option to guide the directionnal fell of the tree..
The recoil unit was twisted clockwise on the flywheel casting and once the saw was started it could be removed for a lighter operation.
MODEL 4A
Original name "ДРУЖБА" - Druzba, it means "friendship'
In 1954, to commemorate the three hundred years of unity between Ukraine and Russia, the saw was named "Druzhba" ("Friendship").
According to "Wikipedia", Boris Cabourg was from 1947 to 1954 in Siberia in the camp, where, along with other exiled scientists developed the All-Union Research and Design Bureau of the Ministry of Forest Industry handsaw running on the gasoline engine. Boris Cabourg called it "Taiga", but later it became known as "friendship."
MANUFACTURED BY:DRUZHBA RUSSIA
OPERATION:One Man operation
HANDLEBAR SYSTEM:Anti-vibration
CHAIN BRAKE:none
CLUTCH:Centrifugal
DRIVE TYPE:Gear reduction
CARBURETOR:Float type
STARTER TYPE:Automatic rewind with steel cable, remove after starting
CHAIN TYPE:Scratcher