I'm giving away a chainsaw to one of my first 1000 subscribers. [ Ссылка ]

I recently acquired a few chainsaws from a local guy and decided to do a few different types of compression tests on them. In this video I'll do the drop test and an actual compression test on 4 chainsaws and compare the results. Then we will pull the mufflers off and check the piston condition to further evaluate the accuracy of these methods. Stay tuned, its going to surprise you!

Heres a link to the video I did when I got these chainsaws:

[ Ссылка ]

Dielectric grease: [ Ссылка ]

Compression test kit: [ Ссылка ]

Here's an explanation about what compression is and why its important:

Gasoline engines require compression to operate. The process of compression confines and presses a mixture of air and fuel (mixed in the carburetor) into a small volume within the area of the engine's cylinder. This process presses together all the molecules under very high pressure. Since the gasoline engine has a spark plug, only moderate compression is enough, requiring about 140-160 pounds per square inch (PSI). Depending on their size and application, some engines may require a higher compression such as 220 PSI. The manufacturer gives the exact compression factor. The compression process of the air-fuel mixture and its ignition is what produces the necessary power to operate a vehicle.

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