Stihl 291 no start

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Labrador

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Well hello, first post, what should the compression be on a stihl ms 291?
With 15 pulls wot I can get it ip to 100 psi.
The saw coughed once but won’t fire up, is the compression to low?
Thanks
 
Yes, thats low compression, tho if your using an auto gauge with long hose to the gauge, and it dosent have a schrader valve in the end of the hose where it screws into the head/ spark plug hole, you may be getting inaccurate low readings.
but yes, pull muffler check for scoring and go from there.

When was it last serviced ? ie fuel filter replaced, fuel and impulse hoses inspected, carb cleaned, air filter kept clean etc etc.
 

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