395xp compression

[Turkeyslayer]

So I bought a compression tester today, kind of curious to see what compression the 395 has. I have never used one before and the instructions where more for automotive aplications. So I screwed the end in and pulled it over until the reading didnt go any higher, not sure if this is the correct method but came up with 155 psi. I think that is pretty good? My tester has the schrader(?) valve but it took approx. 6 pulls to reach max compression, is this normal?

 

[Nitroman]

Did you hold the throttle wide open? Was this on a warm saw or cold?

 

[blsnelling]

6 pulls is entirely normal. I always pull ten just to make sure. Force of habit. 155 PSI is good.

 

[Turkeyslayer]

Did you hold the throttle wide open? Was this on a warm saw or cold?

Saw was cold, and no I didnt hold the throttle wide open. It was kind of a b:censored:h to pull, so I did the drop start pull methodWould this effect the results?

 

[blsnelling]

Holding the throttle open on a chainsaw won't make much if any difference. Try it and see. All the same, I put the saw on fast idle when checking compression. That holds the throttle open a plenty that it's not creating a vacuum.

 

[Turkeyslayer]

Thanks so much for the info:yourock:, tried to rep but have to spread it around a little.

 

[JT78]

Dont know what my compression was stock but it is at almost 185 now.

 

[husqvarmit]

compression tester

They longer the hose on tester the more pulls you will pull to get max. Shorten hose to 4 or 5 inches and you will get max on first pull


Varmit

 

[Banshee]

My 395xp reads 140 psi, if I remember right. But it's cylinder ported.
I think 155 is great for a Husky, if I remember right the Huskies have lower compression than Sthils.