In this video, I will show how to perform a simple engine compression test on Husqvarna 44 chainsaw. This is a crucial part of troubleshooting in the case when the appliance does not start or has a rough start. This test returned around 130 psi compression on the two-stroke engines, which is a very good measurement and indicates the perfect condition of the cylinder head, piston and piston rings. As a rule of thumb, having compression below 50-70psi might cause troubles when starting the chainsaw, however, it may still work. Compression around 100 psi is a normal/working condition.
Tools: engine compression gauge meter
Some of the characteristics:
Power: 2.7/2.0 hk/kW
Weight: 5.6 kg with 32 cm bar & chain
Carburettor: Walbro HDA-24, 35B or Walbro HDC-32A, 51B
RPM: 8,500 under load, 13,000 free speed after break in
Idle RPM: 2,500 - 2,822 prm
Flywheel / Coil air gap: 0.3 mm (0.012 in.)
Spark Plug: Bosch WS7F
Spark Plug Iar Gap: 0.5mm (0.020 in.)
Fuel tank: 500 ml
Fuel oil ratio: 40:1
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