Info on Stihl hs74?

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Hi all - I recently picked up a lightly used Stihl HS74. Does anyone have info on this model? I can't seem to find much of anything online.

Thanks in advance!
 
The HS 74 was introduced in 1992 and belongs to the HS 72, 74, 76 family. All these models have a 23,9cc engine with 0,7 kW. Fuel tank capacity was 0,37l. At the beginning of 1995 there was an update for the engine. Engine power has been increased approx. 15% to 0.8 kW.

This boost in power has been achieved by:

Different port timing
Higher compression ratio
Enlarged inlet port
Modified transfer ports
Modified gasket and spacer flange
 
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