Stihl 4 mix compression low but runs fine?

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Dean Thompson

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Jun 2, 2019
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Ok so got my self a compression tester to check my stihl 4mix gear and bear in mind that they all run as should and start within a couple of pulls even though one does seem easier to pull than the rest but works well i read that people say any stihl that reads under 100psi is nackered and will not start wish i realise is completley untrue as i tried 2 km 130s a brand new hl 95 and a fs 100 all came back with a 60psi reading also done a ts 410 which ran well done 100psi

What does other peoples 4 mix test show for psi out if intrest also i had choke open and throttle wot and i keep all my gear well serviced and valve checked all time thanks
 
I wouldn't trust those readings.
Plenty of junk compression gauges out there.
Amean it could be mate it is brand new but also a cheap one but has good reviews amean a would have thort that maybe if the tests wer all diffrent but the fact the 4 mix all come up the same 60 psi and the only diffrent one waa the 410 thts understandable
 
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