Mastermind Meets The MS441C-M

[Mastermind]

A very good friend of mine gave me this new MS441C-M for Christmas.....that's right......gave me this saw. Talk about blown away.....I still can't believe the generosity of some folks.

I don't have any pics of the saw before I started taking it apart, the idea of doing this thread was thought of after the saw was already apart. I've not got the correct handle bar yet either, the standard wrap is off to another AS member, in trade for a 3/4 wrap. Here is a shot of it after I got it back together last night.....like I said, this is not the handlebar that will stay on it, just an extra I had hanging around.



I'll have this saw from now on, so a woods port is in order. I'm not a "stock" saw guy. I didn't take any pics of the porting process, but if anyone has any questions, I'll do my best to answer them. If need be, I'll post pics from other builds to help illustrate the process.

In these pics the port work, and machine work is finished. I just want to show how I do the transfer entrances, and what the squish band looks like when done.



As you can see here, I've added a "trough" to direct and open the transfer entrances.





If you've not seen a 441 jug off the saw before, the differences between these stratified engines and a "normal" engine are cool to see.

 

[Mastermind]

This is what was removed from the jug while porting.



If any has any questions, concerns, mild criticisms, just ask......that's what makes any thread a god one.

These are a few of the needed tools.







This is how I add the bevel around the port edges. I also sand them with 320 emery cloth by hand.....

 

[Mastermind]

Now for a few more pics to illustrate the differences between this saw and a non-strato.

 

[chadihman]

As always freekin awesome!

 

[Mastermind]

This is one of the degree wheel setups I use. I'm not a fan of the huge degree wheel......it just makes the pointer so long and flimsy, would rather stay with a 7" wheel.

 

[bryanr2]

Man of his word. (on the thread)

So you like the 441cm enough to say that "you'll keep it from now on"?

 

[chadihman]

So how does a ported 441 cm compare to a ported 461?

 

[bryanr2]

or 372 (I know the answer) just need it in the thread for the record.opcorn:

 

[Mastermind]

A few more pics of the jug while I was double checked my timing numbers.

 

[Mastermind]

So how does a ported 441 cm compare to a ported 461?

or 372 (I know the answer) just need it in the thread for the record.opcorn:

I'm not the sort of person that does a lot of side by side comparison of these saws. I've found that what one guy likes in a certain saw, the next guy will hate. I've heard that a 441C-M I built beat three different ported 372s......I've never compared the 441 to any other saw myself though.

 

[Mastermind]

Now we assemble the saw......lots of bits and pieces to one of these.

 

[Mastermind]

The first thing I do on a 441 is separate all the fasteners into groups.

 

[Mastermind]

Now, I enlisted the help of my lovely wife to take pics while I put this beast together. Be sure to ask anything......I'll do my best to explain.

This is a step that may not be needed, but this stuff cuts down on corrosion between parts.











I use a drill to run the bolts in, but always double check them with a tee handle.

 

[Mastermind]

Now to get the intake boot pulled thru the carb box.....

 

[Mastermind]

I use a scwrench to hold the piston up while I install the jug...works pretty slick.

 

[Mastermind]

Now here's a little trick for getting the impluse and fuel line, and the throttle cable connected.

Take this one av mount loose.



And remove this bushing.



That allows the tank to drop down enough to get in there to work......barely.





Leaving the jug bolts out helps a bunch during this part too.









Note that the throttle cable is behind the fuel, and impulse lines.....

 

[stihl for life]

great thread like always love readying them . welcome back randy

 

[MacLaren]

subscribed.

 

[hqv]

opcorn:

 

[firefighterwolf]

On strato engines, intake side of the cylinder...why is there soooo much mating surface?