New saw compression

[Deleted member 135597]

I don't think the issue was your fault. Not a bit.

A failure that early points to a factory defect. That's why warranties exist.

It's not a matter of honesty.

I'd be worried it would happen again, possibly be worse, and you'd be up ***** creek.

The last guy to touch the Saw is "it". That would be you, and not Stihl, now.

There's no way anyone would ever know the saw has been "touched". Everything going in it is OEM. All old parts are being saved. It's not like there's special torque seal on the hardware where the would know the cylinder was off

 

[drf255]

Where did you order the parts from?

 

[Deleted member 135597]

Who cares. As far as they know I have 25 ms461s. Jesus they are not going to dig that deep into this if and when there is a problem down the road. You think some wanna be mechanic is going to research my order history? Lmao

 

[drf255]

Looking out for ya. That's all.

You asked for opinions. That was mine.

Hope it all works out well for ya.

 

[Marshy]

Have the saw in space holding it by the recoil handle . how does the saw descend on the recoil rope if i goes down in a series of jumps slowly then you have no problems, if it descends smoothly/& quicker you could have a problem If as said it starts & runs OK just carry on & see if it gets higher Check your compression Pour a teaspoon of 2T oil in through the plug hole & re check the compression if it reads higher it will probably be higher when bedded/run in bottom line, if it's a good runner carry on without worry

Go read all 6 pages.

 

[JimMorrison]

Woody, you have done a terrific job here. I appreciate the way you have tackled this issue and documented it for all of us. Please continue posting as you get the saw back together.

 

[Deleted member 135597]

Woody, you have done a terrific job here. I appreciate the way you have tackled this issue and documented it for all of us. Please continue posting as you get the saw back together.

Yeah man no problem. I have every intention of updating this thread. Like I said hopefully the parts will be here today and depending on my free time I'm hoping to have this saw cutting wood by Saturday. Thanks

 

[Khntr85]

Yeah man no problem. I have every intention of updating this thread. Like I said hopefully the parts will be here today and depending on my free time I'm hoping to have this saw cutting wood by Saturday. Thanks

I will say this man, if you did like the saw before the issue, I promise you will love it....I know I don't regret getting my 461 ever...I now look at the big knarly butt ends of hardwood and smile.... I actually hunt them out just to use the saw lol!!!!

 

[Deleted member 135597]

I will say this man, if you did like the saw before the issue, I promise you will love it....I know I don't regret getting my 461 ever...I now look at the big knarly butt ends of hardwood and smile.... I actually hunt them out just to use the saw lol!!!!

I seriously think it was like this since I got it because I was never like " holy ****" with this saw. It never seemed lacking in power, but didn't have that wow factor. Maybe it got scored on the test run at the factory? I should have pulled the compression test before I ever used it. Oh well, I don't think we will ever know the answer. I'm sure I will tell the difference between 160psi and 105-110 psi compression though.

 

[Khntr85]

I seriously think it was like this since I got it because I was never like " holy ****" with this saw. It never seemed lacking in power, but didn't have that wow factor. Maybe it got scored on the test run at the factory? I should have pulled the compression test before I ever used it. Oh well, I don't think we will ever know the answer. I'm sure I will tell the difference between 160psi and 105-110 psi compression though.

Absolutely you will tell a difference.... I remember you said it was your first big saw, well if your other saw is the ms250, then your head will spin from the deference I guarantee ya that!!!

 

[Deleted member 135597]

Yeah the ms250 is my other saw. I've ran some 60cc saws but never really put in any quality time with them. So when I got this saw I was expecting to **** my pants and it never really had that. Trust me it was 100 times more powerful than the ms250 but not what I was expecting. I even went out and bought new heavier chaps just for this saw because I was almost scared of it hahaha. The few times I ran it, I was like this isnt "all that"

 

[Deleted member 135597]

I'm going to bring home a piston from work and take a pic with it next to the 461 piston. It's hilarious. Put it this way, some of our engines we get 550 cubic inches out of a 6 cylinder. ( think of Chevys big v8 that's only 454 cubic inches) to me this piston looks like it belongs on a key chain or something hahaha. I still can't believe I can't find or get the ring end gap or piston to cylinder clearances. We would never even think about assembling an engine without them.

 

[Khntr85]

Yeah the ms250 is my other saw. I've ran some 60cc saws but never really put in any quality time with them. So when I got this saw I was expecting to **** my pants and it never really had that. Trust me it was 100 times more powerful than the ms250 but not what I was expecting. I even went out and bought new heavier chaps just for this saw because I was almost scared of it hahaha. The few times I ran it, I was like this isnt "all that"

Ya I remember few years ago I ran a my ms290 next to a my ms362 I rebuilt and I was like really...the difference between those 2 is torque with 20"bar buried(and obviously build quality)....when I went from the ms362 to the ms461 I could tell the difference better.....now the huge difference there being I can bury the 25" bar on the ms461 in hickory/oak and it powers right threw....

Also I should add my 461 seemed to me like a TOTALLY different saw after 10-15 tanks of fuel threw it....I didn't think the breaking in process would be so noticeable.... I know I have heard a few guys say the same thing, but I could no doubt tell it got stronger as I put some time on her!!!

 

[Trx250r180]

I've also noticed if you make about 1/2 doz girlie drop starts on choke, then one manly drop start, the saw will start no prob.

Do you have any video demo's of this girlie drop start method ?

 

[Deleted member 135597]

Do you have any video demo's of this girlie drop start method ?

Or just ANY girlie videos?

 

[JimMorrison]

I seriously think it was like this since I got it because I was never like " holy ****" with this saw. It never seemed lacking in power, but didn't have that wow factor. Maybe it got scored on the test run at the factory? I should have pulled the compression test before I ever used it. Oh well, I don't think we will ever know the answer. I'm sure I will tell the difference between 160psi and 105-110 psi compression though.

I agree, some little piece got lodged in the ring land, for just a moment, and caused the damage. Right from the get go.

 

[Deleted member 135597]

My parts came in and something doesn't seem right

 

[Karla]

Woody,

I do not even have to measure that piston, I know it won't fit. Lol.

I worked on both Fairbanks-Morse, and Colt Locomotive diesels, they were 18 cylinders, 9 on each side, and the Engine were bolted to the floor to power up emergency 50 Mega Watt generators. I wish I had one of those pistons to compare to yours - Lol, they were just huge you need a crane to pick them up, also I did most of the Electrical work, but worked Along side the Machinists that did the mechanical work, so we would share tasks sometimes If they needed help lifting something. I also did take the complete Diesel and Generator courses for both types of engines but then I retired like 12 years ago.

Anyhow, I liked your comparison of pistons,

 

[Trx250r180]

That must be one of those big bore kits i heard about .

 

[Deleted member 135597]

Woody,

I do not even have to measure that piston, I know it won't fit. Lol.

I worked on both Fairbanks-Morse, and Colt Locomotive diesels, they were 18 cylinders, 9 on each side, and the Engine were bolted to the floor to power up emergency 50 Mega Watt generators. I wish I had one of those pistons to compare to yours - Lol, they were just huge you need a crane to pick them up, also I did most of the Electrical work, but worked Along side the Machinists that did the mechanical work, so we would share tasks sometimes If they needed help lifting something. I also did take the complete Diesel and Generator courses for both types of engines but then I retired like 12 years ago.

Anyhow, I liked your comparison of pistons,

This post is worthless without pics