Stihl 361 Junkyard Zombie Mutant

[LAWN BOY]

There's a reason I don't eat green Mayo or any Mayo for that matter.....

I love Mayo.

 

[Ketchup]

There's a reason I don't eat green Mayo or any Mayo for that matter.....

Who says I eat it?

I love Mayo.

Have you tried the green?

 

[LAWN BOY]

Who says I eat it?



Have you tried the green?

The avocado flavor, yes. I’m not certain what your mixture is exactly.

 

[Ketchup]

Muff stuff.

 

[Ketchup]

Have you tried the spicy mayo?

 

[LAWN BOY]

Have you tried the spicy mayo?
View attachment 418362
View attachment 418363

Nope.

 

[Ketchup]

Nearing final assembly. The muffler exit is roughly 100% of the port.


Modded the inside of the air filter.

The flywheel is an eBay $10 036. The 440 crank has a different taper than the 361 flywheel. I scavenged a key from the 026 crypt next door. The lower coil mount needs stretched a tad to make room for the flywheel.

The top ended up like this. I had to trim the plastic more than I expected. Both corners of the top fins on the exhaust side were holding up the cover. I had to hack the fin where the mount bolt is and then stabilize the bolt with a bit of fuel line. It will probably melt.

Tomorrow all I need to do is assemble the clutch side. Then I can fire it up. I’ll disassemble and examine after the first hot run, if it will even pop.

 

[Powerstroke Cowboy]

Good work Caleb! Looking forward to seeing how she runs.

It looks like you've got some handy tools/machines at your disposal.

 

[drf256]

Caleb, they make AM mesh airfilters for the 361. They have on eBay. Make a big difference. Move a lot more air.

Do you think the ignition timing will be the same with the other flywheel?

 

[Powerstroke Cowboy]

Caleb, they make AM mesh airfilters for the 361. They have on eBay. Make a big difference. Move a lot more air.

Do you think the ignition timing will be the same with the other flywheel?

Joe was doing some tests on an almost stock 361 and going from the OEM to a mesh filter it picked up close to 1/4hp.

I'd think the improvement would be even more with this build.

Here's the one Joe used.

https://www.farmertec.com/Air-Filter-Cleaner-For-Stihl-MS341-MS361-Chainsaw-1135-120-1601-p228231.html

 

[Ketchup]

Caleb, they make AM mesh airfilters for the 361. They have on eBay. Make a big difference. Move a lot more air.

Do you think the ignition timing will be the same with the other flywheel?

The mesh filter is on my “forgot to order” list. Should be here this week.

I wonder the same thing about the ignition. I’m going to try it stock. It’s in the ball park. I haven’t clocked it but it’s somewhere around 30 degrees BTDC.

 

[Ketchup]

Turns out I needed another bushing for the oiler gear. I took a few shots of the process.

Brass hex stock center drilled with a 12mm bit.


Face the hex down to 15mm.

Part at 15mm.


Voila.

 

[Ketchup]

Too bad the rest of the clutch assembly wasn’t that easy. It turns out that the 440 crank is threaded an extra 2mm compared to the 361 crank. That means the clutch spins down far enough to squeeze the oil deflection washer onto the oiler gear. That would melt the gear and oil at idle. Can’t have that. Back to the lathe.



Put the clutch back on. Still too tight. Maybe…


Nope. I had to pitch it completely, only to
discover the clutch was contacting the gear itself. So…

 

[Ketchup]

Still no beans. Had to find a little more depth.


That got it, barely.

 

[Ketchup]

The starter side turn up a clearance issue as well. The pull housing doesn’t fit the 036 flywheel. I had to take quite a lot of the internal flanges.

Luckily I had this handy observation port to help diagnose.


The mismatch to the plastic shows how much I removed. I had to do the plastic as well.

 

[Ketchup]

I mentioned earlier that I had to trim the top cover. Hopefully you can see it here along with another observation port.

 

[Ketchup]

So what should have taken an hour took three but it did go together and turn over…

That’s when I discovered I didn’t have spark. Neither of my graveyard coils so much as fizzles. So I’m dead in the water until a coil shows up. No vids this weekend. Bummer.

 

[thedude74]

Excellent build thread. Looking forward to seeing it running.

 

[Ketchup]

Excellent build thread. Looking forward to seeing it running.

Me too! I’m not sure what’s up here. I haven’t been able to get spark no matter what coil I use. I’m going to try an 036 coil if I can fit it. I kinda suspect my flywheel.

 

[NateSaw]

Me too! I’m not sure what’s up here. I haven’t been able to get spark no matter what coil I use. I’m going to try an 036 coil if I can fit it. I kinda suspect my flywheel.

Are the mags good? Great thread Caleb! You're funnier than a rubber crutch. I'm almost out of popcorn. I have laughed out loud so many times reading this. I've shared it with my buddy who's not on here. He said he may join just for the entertainment and education!