Page dedicated to the legendary "Druzhba", the chainsaw from the Soviet Union. This Easter I inherited one made in 1992 (Model 4, I guess). Identical to this one. It belonged to my actually deceased uncle Dorel. It was laying on the ground in a barn at granma's farm. Didn't function for a long time, judging from the badly corroded legs of the case and the solid rusted chain. The carburetor seemed to be dirty, not working properly. When pouring some fuel compound directly in the chamber it went thru some 10-15 cycles so I took it home to give it a chance. During its life it was dismounted many times (by various persons) from the worn slots of the screws and is missing almost all the gaskets along with the air filter.When rehabbing, besides cleaning, I used red silicone rated 300°C to bed the block and the case and hope it holds.
Today May 7 I made a preliminary assembly and tried to start it (just to see if it's worth continuing restoring it). It started! Of course the carburetor is completely out of balance, the fuel mix was bogus, but what counts is that I can continue. I will dissassemble again and clean some more, draw file the bar (has some nasty mushrooming) and see if the oil pump works.
Today May 9 I tried it again. The oil pump is ok. Tomorrow I'll take it in the country side for a tryout. The compound is 1/20, a bit on the oily side...
I looked on the net and finally found the original instructions of use for the Ural-2t model. Almost identical except the carburetor. I took the pain to translate some of it pertaining the quantities used:
2.3 Servicing volume and the explanation of materials
|
Place of servicing and the lubricant |
Liters |
Grams |
Designation of the material |
|---|---|---|---|
|
Fuel tank
|
1,6 |
- |
Mixture of the motor gasoline A -72 or not ethylated standard 80 ALL-UNION STATE STAN. R 51105 with the motor universal by oil M-8V ALL-UNION STATE STAN. 10541-78 in the relationship according to 4.3. |
|
The tank of lubricating the sawing apparatus |
0,24 |
- |
Oils are motor universal M-8V ALL-UNION STATE STAN. 10541-78 in summer, the mixture of the automobile gasoline with oil; in winter, 3 parts of oil + 1 part of gasoline. |
|
Cavity of toothed engagement, reducer and the slave gear |
- |
50-60 |
Lithol -24 ALL-UNION STATE STAN. 21150-87 or the soap-thickened lubricant -1 ALL-UNION STATE STAN. 1957-73. |
|
Cavity of drive and the oil pump |
- |
20-30 |
The same |
|
The cavity of starter |
|
|
Oil is motor universal M-8V THE ALL-UNION STATE STAN. of 10541-78 5—10 drops. |
|
Bushings connection and the axis the administration |
|
|
The same, on 2—3 drops. |
|
2.4 Basic data for the adjustment and the control |
|
|---|---|
|
Size of the spark-plug gap of ignition, mm |
0,6-0,7 |
|
Distance of "A" from the end of the teeth of the ratchet of the engine to the end of the flange of the cover of crankcase (figure, 2), mm |
21,1-21,6 |
|
Size of clearance between the control lever of the choke by shutter and by handle with the full gate of throttle plate, mm |
5-16 |
|
Distance from the edge of tire to the edge of connecting it is sectional with drawing out of the lower branch of the stretched chain from the tire in its average part, mm |
5-10 |
|
Understating of limiting protrusion relative to the cutting edge sawing chain |
0,8±0,125 |