Echo cs670

[motoOzarks]

Yeah, I shouldn't have, but I did
A cs670 came up for sale near by and I bought it.
Starts easily, idles well, runs.
Dirty but not beat up from what I can see. I have not put it to the wood or got it all hot n bothered yet.

Pulled 145# compression, I don't know what it's supposed to be.

Came with a dinky 18 inch bar. 3/8 .050

I would like to hand me down my original Stihl 044 20 inch bar and put a new 24 inch on the 044.

The bar mounts are not the same. Studs are skinnier. I've seen bar adapters mentioned and have started to look but I'm not knowledgeable about them.
I left the saw at the farm and of course did not measure the studs as I thought I could find info easily but there are so many options I'm confuserated.

What is the bar mount size on the 670? What adapter(s) would work?
Is changing the studs to Stihl size possible? Preferred?

What would you do?

 

[motoOzarks]

 

[motoOzarks]

Grind down some hex nuts as a spacer collar? Cut a hunk out of a tube?

Apparently the bar studs are not screw in mount. Rather are square headed and mounted thru the oil tank.


Sugihara multimount bar

 

[motoOzarks]

1/4 inch drill bit

 

[stretch5881]

From what I can find, the Echo bar mount pattern is D176. If you do a google search for chainsaw bar mount adapters, you will find what you need. Try to keep it simple with the least amount of parts. If you have to remove the bar in the sticks, less parts to drop.

 

[motoOzarks]

 

[motoOzarks]

From what I can find, the Echo bar mount pattern is D176. If you do a google search for chainsaw bar mount adapters, you will find what you need. Try to keep it simple with the least amount of parts. If you have to remove the bar in the sticks, less parts to drop.

I agree
I'm even willing to just get a new bar for the 670.

D076 must be similar

The bar nuts use 13mm wrench and I think(forgot to measure) means 8mm stud. All the adapters go to 9mm. which is still a little loose and I don't want to pay for that.

 

[motoOzarks]

240388101 guide bar 24DOPS3881 echo part number for guide bar

727081 72V-81G echo part number chain

****************************************************************************************

Oregon
PowerCut™ Guide Bar, 24"
Part# 240RNDD176

81 link

*****************************************************************************************

Home Depot

• 24 in. laminated bar with 0.050 in. gauge and 0.375 in. pitch
• Mount application: D076/D176
• Compatible with current ECHO chainsaw models: CS-590/CS-620P/CS-620PW/CS-680/ CS-800P Older Models: Older Models: CS-600P/CS-670/CS-8000
• Compatible with ECHO chain #: 72LPX81CQ

$87.50

ECHO's 24 in. replacement chain (72LPX81CQ)

$31.76 Full chisel

$119.26 total

**********************************************************************************

84 dl
Oregon Power Match Bar .050" x 3/8" Gauge x 24" Pitch 240RNDD025

for 044

***********************************************************Oregon 72EXL084G PowerCut Saw Chain 24"

 

[motoOzarks]

courtesy of Wood Doctor

 

[dahmer]

TsuMara makes bars that for Echo saws that are more standard , 72 dl for a 20” bar as opposed to the Echo D176 70 dl.

 

[Lightning Performance]

Good point above made by your Elwood City fan


These Echo bars are a pia if you don't have a local Echo dealer with odd dl counts on loops and bar lengths.

I run a 72 or 84 dl on this saw.
Oregon makes three Uni-mount bars that drop right on these saws or buy a new lw one as suggested.

I run Stihl bars on my Makita saws without an adapter. You just need to line it up right. A steel band wrapped around both studs shaped pike a paper clip works just fine and you won't loose it. One guy on Ebay did sell the machined aluminum adapters to bolt on your saw to run Stihl mount in D025. Old Mac fits this mount if you can find one in regular 375 dl. Mac also had their own chain type so be careful there.


I did not watch the videos you posted here.

 

[Wood Doctor]

I have also made these adapters (shown in #9) using two layers of plexiglas held together with double-sided tape. That provides the thickness you need and works also. The steel band idea also works, but you need to find the right width band or grind one down.

I cannot believe some guy used a dinky 18" bar with this saw. It will even pull a 32" bar and chain through red elm. My "standard' for it is a 25" bar, but it largely depends on what I am cutting.

 

[Lightning Performance]

I have also made these adapters (shown in #9) using two layers of plexiglas held together with double-sided tape. That provides the thickness you need and works also.

I cannot believe some guy used an 18" bar with this saw. It will even pull a 32" bar and chain through red elm. My "standard' for it is a 25" bar, but it largely depends on what I am cutting.

I run a 20 375 bar and that is what's on it this day. Got you some pics.
The factory Echo 20 325 is shaped like a Cannon bar. Maybe this will help some.

K041 needs an oil hole drilled in it. I believe that is a Jred mount... not completely sure about that. Could be a Husky/Dolkita. Makita OEM mount has a different tail.

 

[Lightning Performance]

Posting pics here today is about impossible full size. The server refuses to cooperate
GL with those pics

 

[Lightning Performance]

I run those chains and short bars for bore cutting stumps to see if the tree is hollow or not. They go pretty good in dirt. This thing has the oe stock grunt and large oil pump with the acc oil pump to power right in there and dig around before felling happens on sketchy chit.

 

[Wood Doctor]

Posting pics here today is about impossible full size. The server refuses to cooperate
GL with those pics

You can shrink those Pics by loading them into Adobe. Remove the white margins, and then save as a JPG. A 3 MB Pic suddenly is shrunk by a factor of 10 or more. The Pic file posted in #9 takes up only 140 KB, believe it or not. Each Pic by itself was over 2 MB.

 

[Lightning Performance]

This one is used to cut up pallets and trash wood.

 

[pavel408]

K041 needs an oil hole drilled in it. I believe that is a Jred mount... not completely sure about that. Could be a Husky/Dolkita. Makita OEM mount has a different tail.

K041 is typically used for Echo/Shindaiwa 30-50 cc and Dolmar/Makita 30-40 cc saws.