Chainsaw Repair

A little tid bit of info on this leaking seal business .Usually you can tell after a short run and the saw runs out lean if you have a bad seal .On something like Stihl if you take the clutch off because of the fact that side is prone to oil slinging it will have an oily film under the clutch .If you have a blowing seal you can usually see the blow pattern in the oil residue .Also more times than not a bad seal will be on the clutch side verses the flywheel side .

I don't know who makes it but echo uses the same one in there tools catalogue.i would think it is cheaper from echo then stihl. Mine does not have any markings on it.

Stihl pump sure looks like this one from .Harbor Freight!

http://www.harborfreight.com/brake-bleeder-and-vacuum-pump-kit-69328.html

And 26$

" I have had mine for a couple of years now with no problems "       

Stihl dealer recommended it to me also   

I guess OEM  http://www.druck-temperatur.de/dt/hv90_e.htm
robust high-quality full metal pump
Made in Germany

So on leakdown tester that uses the spark plug hole. Whats the max PSI should I use on chainsaws or other cube carb equipment?