ECHO Echo, Echo, Echo

[trooney]

Ida know. Take some measurements and post them up, mebbe somebody has one that would work? You could probably just cut one out if you have the patience.

Yeah, thats the problem! Lol

 

[Mastermind]

If you decide not to use a base gasket Tom. Do yourself a favor and get some Dirko. In my opinion, there is nothing better.

 

[trooney]

If you decide not to use a base gasket Tom. Do yourself a favor and get some Dirko. In my opinion, there is nothing better.

Thats what I use. Used to use Yamabond but now use Dirko. We'll see what squish is.

 

[nbbt]

Thats what I use. Used to use Yamabond but now use Dirko. We'll see what squish is.

I used many tubes of Yamabond 2, and never saw a related failure on the snowmobile engines where it was used.

 

[mainer_in_ak]

Hi all, hope everyone had a happy father's day. Finally got those parts for the ported qv 8000. It needed:

Clutch hab, clutch spring, clutch drum, clutch drum bearing, clutch cover decal, recoil decal, chain catch, larger HDA 45 carb, impulse line, rubber carb boot and carb boot spring.

Left knee is acting up, so cant fall trees for a few days. 10 years an Army Engineer, gotta take care of those knees. Limbing and tripping over brush will have to wait, figured I'd time some cuts.

Multiple cuts, the cs 8000 was always 4 seconds faster than a muffler modded cs 620pw. Same 28" bar and exl chain, wood was a white spruce stump.

All up, fuel oil, 28" bar and chain, the cs 620pw was about 19.5 lbs. The cs 8000 was about 22 lbs. So about 2.5lbs difference.

*waiting on a walbro 86-578-1 carb jet to clear out that "go-rich" high-speed burble on the 620pw. Only 1/2 turn on high speed jet and its still rich. Don't need that goofy safety jet.

 

[mainer_in_ak]

Got another milling gig for an older fella. Dropped 5 large white spruce saw logs with the cs 8000. Also used to limb and cut to 18 ft logs. So 10 saw logs total. Firing up the cs 1201 milling saw later today.

Had to bore cut one heavy leaner. 28" bar wasn't big enough for a clean bore cut, so nipped off some of the root base on both sides of bore cut. Compared to my 620pw, my jonsered 2172 and my echo cs 6700's, it's different than most 60-70 cc fodder. You definitely can tell you're falling trees with 81 cc of ported torque. The saw isn't "peaky". It hits a big flat plateau of power that starts lower in the rpm range and carries that power above 10,000 rpms in the cut. It's much smoother than my old ms 660 magnum.

The big fuel tank, could go two trees at a time, felling, limbing and bucking, with lots of idling. As the tree thinned near the crown, I'd just go grab a 50 cc saw, so cant really complain about the weight. I honestly think that a 32" light bar might be better for dropping saw logs. The oiler is filthy-good. Bar stays cool to the touch in hot weather. No chain stretch. Chip clearance is excellent in the big, cavernous clutch cover. Where my jonsered 2172(re-badged 372 x-torq) would plug up with noodles, halving the stumps, this 81 cc saw doesn't plug up.

 

[mainer_in_ak]

If you decide not to use a base gasket Tom. Do yourself a favor and get some Dirko. In my opinion, there is nothing better.

Woah, this is threebond1207d territory round here. Part# ECHO X686000000. Good to 40 below zero.

Echo has a marketing issue.

I would've called it threesome1207double-d.

Stihl would've just called it "magnum-bond"

 

[mainer_in_ak]

For example, wtf is this?!

 

[mainer_in_ak]

4910 is down: air leak on pto crank seal. During my milling gig, I had cut a large spruce stump down to ground level. It was 85 degrees out and probably took 5-6 full-throttle minutes going around the entire stump with the bar buried.

Also had to do a couple 16 ft long free-hand milling rips, cutting a flat edge on a saw log, so my big Alaskan mill had a nice flat surface to guide along.

Anyhow, this 4910 isn't the brick sht house that my cs 530 is. I don't care for it. It's not robust enough for my environment.

One year review:
Frail rubber av mounts that tear easily
Tin can muffler that dents easy
Thin, flimsy plastic clutch cover
Buzzy and vibey. Only 50 cc saw I've run that leaves tingly hands.
Crap air filter
Flywheel fins nots as large or effective at cooling over the fkn master piece of a flywheel on my cs 530. The cs 4910 heats up when really pushed hard.
Running 32:1 90 octane/amsoil saber. Plug shows dark chocolate color, so tuned slightly rich.

 

[Mastermind]

4910 is down: air leak on pto crank seal. During my milling gig, I had cut a large spruce stump down to ground level. It was 85 degrees out and probably took 5-6 full-throttle minutes going around the entire stump with the bar buried.

Also had to do a couple 16 ft long free-hand milling rips, cutting a flat edge on a saw log, so my big Alaskan mill had a nice flat surface to guide along.

Anyhow, this 4910 isn't the brick sht house that my cs 530 is. I don't care for it. It's not robust enough for my environment.

One year review:
Frail rubber av mounts that tear easily
Tin can muffler that dents easy
Thin, flimsy plastic clutch cover
Buzzy and vibey. Only 50 cc saw I've run that leaves tingly hands.
Crap air filter
Flywheel fins nots as large or effective at cooling over the fkn master piece of a flywheel on my cs 530. The cs 4910 heats up when really pushed hard.
Running 32:1 90 octane/amsoil saber. Plug shows dark chocolate color, so tuned slightly rich.

Good review.....but it seems like you are asking an awful lot of a 50cc saw.

 

[Kerfed]

Best way to get a review: push it ‘till it breaks. Every saw I’ve run is junk…now.

 

[mainer_in_ak]

Yes, alot to ask of a 50 cc saw. Stumping and free hand milling. I had another guy dull a chain on my stumping saw and the little 4910 had to pick up the slack. The mosquitoes were bad, and couldn't take time to sharpen the big saw.

I honestly gravitate towards a CS 620pw or a ported CS 6700 as "everything saws". They're more robust and don't feel heavy limbing.

 

[FergusonTO35]

4910 is down: air leak on pto crank seal. During my milling gig, I had cut a large spruce stump down to ground level. It was 85 degrees out and probably took 5-6 full-throttle minutes going around the entire stump with the bar buried.

Also had to do a couple 16 ft long free-hand milling rips, cutting a flat edge on a saw log, so my big Alaskan mill had a nice flat surface to guide along.

Anyhow, this 4910 isn't the brick sht house that my cs 530 is. I don't care for it. It's not robust enough for my environment.

One year review:
Frail rubber av mounts that tear easily
Tin can muffler that dents easy
Thin, flimsy plastic clutch cover
Buzzy and vibey. Only 50 cc saw I've run that leaves tingly hands.
Crap air filter
Flywheel fins nots as large or effective at cooling over the fkn master piece of a flywheel on my cs 530. The cs 4910 heats up when really pushed hard.
Running 32:1 90 octane/amsoil saber. Plug shows dark chocolate color, so tuned slightly rich.

That's probably the same experience you would have with an MS-271, Husky 455, or other plastic saws of that size. Just can't expect proline quality at consumer price point. About the best you can do is Echo CS-501/590 or a used saw in good shape .

 

[mainer_in_ak]

Ferg, I'm sure you know this: a cs 4910 is essentially a cs 501.

Yes I put a couple seasons behind an MS 290 and a 455 rancher. The 290 developed an air leak and grenaded a plastic-caged crank bearing. The 455 rancher was slow and had to be modified to keep wood dust off the plastic oiler gear. I fixed both frequently and sent them off.

I'd still take a cs 4910 over the homeowner stihl and husq stuff.

Both the ms 290 and the husq 455 were replaced by a used Echo CS 530. It was lighter, cut faster and never begged for parts. The press-fit metal oiler gear is indestructible.

I'm currently in the process of taking over a mushing expedition company. You'll always see compact top handle echo saws in the dog sleds, to maintain trails. I'm gonna fix/keep the little 4910 in the dog sled for winter trail work. It'll be more occasional cutting, always in cold weather.

 

[Mastermind]

Ferg, I'm sure you know this: a cs 4910 is essentially a cs 501.

Yes I put a couple seasons behind an MS 290 and a 455 rancher. The 290 developed an air leak and grenaded a plastic-caged crank bearing. The 455 rancher was slow and had to be modified to keep wood dust off the plastic oiler gear. I fixed both frequently and sent them off.

I'd still take a cs 4910 over the homeowner stihl and husq stuff.

Both the ms 290 and the husq 455 were replaced by a used Echo CS 530. It was lighter, cut faster and never begged for parts. The press-fit metal oiler gear is indestructible.

I'm currently in the process of taking over a mushing expedition company. You'll always see compact top handle echo saws in the dog sleds, to maintain trails. I'm gonna fix/keep the little 4910 in the dog sled for winter trail work. It'll be more occasional cutting, always in cold weather.

Friend of mine has cut firewood all his life. He's in his late 70s, and has tried every brand out there. He has two smaller Echos now, and has worn out several bars on them and never had a serious issue. They are nothing but dependable.

 

[Hoser]

My friend got an echo 310? The same time I got my 271, that little saw has put up with more abuse then I’d ever think it would take, dropped, thrown, pinched, on fire. The darn thing still starts up on last years ethanol gas mixed to “what feels right” on oil to go get a couple cords up for the sugar shack
Really developed a healthy respect for anything echo

 

[mainer_in_ak]

Yep, some are very rugged saws, that last. My qv-6700 had seen extensive fire fighting. Plastics melted near intake from drawing in flames, from cutting into roofs on fire, flywheel area packed with asphalt shingle and car metal, screws rattled loose from the vibration of cutting into car doors, roofing metal etc.

Chain brake was broken off at the handle, so took a cutter wheel and cut it off. Retrofitted a cs 670 chain brake.


The amount of aluminum transfer from that scorched piston was significant. Cylinder had THICK plating, it cleaned up nice, only needing a new piston. Still cuts great, but does have an air-leak after cutting a large tree in hot weather.

Same deal with a cs 620, very robust saw.

 

[FergusonTO35]

Ferg, I'm sure you know this: a cs 4910 is essentially a cs 501.

My bad, for some reason I thought the 4910 was a homeowner clamshell like the 271/455.

 

[Maintenance Chief]

I'm freshing up my cs-330t with a new piston /ring and seals.
I've already gutted the cat . Is there any other performance mods I should handle before reassembling ?

 

[farminkarman]

My bad, for some reason I thought the 4910 was a homeowner clamshell like the 271/455.

The 4910 has been discontinued and had been replaced with the 4920 which is a clammy saw.