Husky 395xp compression figure

[spudulike]

150psi is fine, it is what I would expect and if it hasn't been used much, would expect it to go up a little with use - perhaps 10-15psi.

 

If you take the muffler off, can you see machining marks on the piston skirt? Does the crown of the piston have much carbon on it?

 

Try taking the plug out and shine a bright LED torch down the hole and take a look at the exhaust side of the cylinder and look for any vertical aluminium transfer or scoring on the area directly above the exhaust port and also look for diagonal honing marks on this area.

 

It is possible that the saw has failed and had a new piston of some sort "thrown in" and sold on.

 

A 395 on a short bar should be unstoppable, these saws are full of torque and just slapping on a twin port muffler isn't the way out. I always make sure the piston and cylider are in fine condition before doing any porting - telling someone their piston is shagged isn't always appreciated but getting saw back that goes like stink and will last five years plus for the extra £30 for a decent Meteor Italian piston is a small price to pay!

 

One other thing to try is to get the saw warm and do the compression check again, if it is under 140psi, I would be getting a little concerned.

 

It may be worth looking at the bolts around the carb and cylinder and see if there are any signs that the saw has been apart!

 

If you want a second opinion............................PM me!

[medroberts]

Spud , Thankyou very much for your suggestions. I will try these and get back to you.

Regards, Med.

[spudulike]

Spud , Thankyou very much for your suggestions. I will try these and get back to you.

Regards, Med.

 

Hope it works out for you and all is good with the saw. It sort of looks clean but does look to have had more than two goes!

[wisecobandit]

Wisecobandit-pics of the saw as asked. Serial no shows built in 2014 , sixth week. Stubby- my wife fell about laughing with your last comment :lol:

But on a serious note I bought a brand new 560xp 18" bar begining of the year (due to scum nicking my 357) and I am delighted with it power etc... So when I thought of replacing the sthil 056av with a 395xp I thought I was going to be pleased also:thumbup1:

Spud-what do you think about my compression reading ?

I guess I just want to know that the saw is preforming as it should. Was thinking of replacing the knackered 24"bar and chain for a 28" set up, but Iam concerned about how it will handle this ..... Comments please...

 

Certainly as you say its genuine. The compression gauge pic the sticker looked silver like some of the dodgy Chinese jobs.

It should as others have put certainly pull a 24" bar with authority. First thing I would check is the basics like carb tune as off the production line they are set rich which can zap power and maybe a new plug and air filter clean.

Remember the factory settings for a 395 will be beyond rich. They are sold new with 3 different bar lengths so the saw is set up rich and ive never seen a new saw sold where the dealer has actually tuned the saw in accordance to the bar size.