Chainsaw Repair

Stroke and reeds is what I think give them the torque, plus maybe the way oem porting was done.

I would say Al or 660mag or others would know more on these older reeds and how they work.  I try and stay as far away from them as I can. Just not my cup of tea, so to speak.

A certain eccentric fellow out in Northern Ca would sure appreciate it if you'd steer any of those reed valve 4200-8500 series Poulans  that you come accoss towards him.  Those old reed valve monsters certainly are my cup of tea!:D

I seem to recall the bars for the 5200/8500 and the 5400 won't interchange without a "S" adapter--Is there a difference in the bar stud size between the 5200/8500 and the 5400?  It's my understanding the 5400 came with larger diamer studs than the earlier 5200,  but on the 8500 Poulan went back to the same size used on the 5200.  Or am I totally ?

The 4200/5200 saws all have 5/16" studs.  Poulan increased the stud size from 5/16" to 3/8" during the 4400/4900/5400 production run (meaning earlier 4400/4900/5400 saws have 5/16" studs, while later 4400/4900/5400 saws have 3/8" studs).  The IPL's for these models show both sizes of studs and nuts. 

The 6900/7700/8500 saws only had the larger 3/8" studs (they never went back to 5/16" studs).  The 5/16" stud saws can use Oregon D176 mount bars (and the old Homelite and Poulan 5/16" slot bars) without 'S' clips, plus 3/8" slot Windsor UXL and Oregon D096/196 Homelite XL mount bars with 'S' clips.  The 3/8" stud saws can only use the UXL/D096/D196 bars.

Just found a old post from poulan GTG.

I think more then a few were surprised with the yellow echo 8000 yesterday with 24" full comp full chisel chain buried in hardwoods.  Blsnelling even took it with him to test against a Poulan 5200 85cc , Pioneer P60 98cc and he came back saying the JD 800 beat them both pushing hard and using normal bucking in hardwood testing.
That surprised me too.

Keep in mind that Brad also said at one point than his P-60 was MUCH stronger/faster than a 112cc Homelite 750 or any stock 123cc McCulloch CP/SP125 in big wood.  By extension.............that means that the JD800/Echo CS8000 is stronger/faster than those beasts (since it's stronger/faster than the P-60 and the 5200 according to him).  Sorry.................no sale.....

I didnt test so I cant say and didnt watch.  But this 800V runs pretty darn good.    It's not a grocery getter  echo 8000. 

That Echo's been 'warmed over'?  Well that makes it easier to understand how it could possibly beat a 5200 or P-60.  Those are both strong saws.

 Tightened squish and muffler modded. Stock porting raised back up and cleaned up.