McCulloch Chain Saws

[Eccentric]

Thanks for putting those up JP. From my non-precise observations, here are the cutting times I got from watching the vids:


Stock SP125------24 seconds.

Stock Bore 101B--11 seconds.

.050 Over 101B---15 seconds.

395XP------------16 seconds.

That SP125 is running WAY too fat in the cut. You can either swap a leaner fixed jet into your existing carb, or swap on one of the large bore fully adjustable SDC's. A couple guys have done just that, and know which SDC you need (and what Macs originally came equipped with them).

 

[Eccentric]

Today I changed the oil tank on my Super 797.
When I got the saw the oil tank had been epoxied and it looked like
crap to me, So I looked for a better one,it took a while but I found
a NOS one. When I took the tank off inside it had a big glob of epoxy.:msp_ohmy:

Randy's 790 has an epoxy repaired oil tank and stuffer. Swapping them both out. The repair on yours looks to at least be functional. Randy's tank had a badly damaged bar mount pad area (chain rash). The holes where the studs pass through were hogged out (and the sheet metal stud bracket inside the tank was broken) too. What was strange is that the stuffer has a LARGE off-white glob of epoxy patching it (on the oil tank side of the stuffer). Don't know why. Tossed rod..........corrosion........who knows. I haven't pulled the stuffer off of the crankcase to look at the other side of it yet. The epoxy is pulling away from the mag in places. Don't want to run it that way. The P/C and rings are extremely fresh. Maybe it tossed a rod, and they rebuilt the engine without replacing the stuffer. The engine runs STRONG and has tons of compression. Don't want to risk killing it with an air leak. I'll shoot some pics when I pull it back apart...

 

[Ambull]

Thanks for putting those up JP. From my non-precise observations, here are the cutting times I got from watching the vids:


Stock SP125------24 seconds.

Stock Bore 101B--11 seconds.

.050 Over 101B---15 seconds.

395XP------------16 seconds.

That SP125 is running WAY too fat in the cut. You can either swap a leaner fixed jet into your existing carb, or swap on one of the large bore fully adjustable SDC's. A couple guys have done just that, and know which SDC you need (and what Macs originally came equipped with them).

Thanks Aaron. I think the 050 over was about 12-13 seconds though. I forgot to mention but both 101B's are running 32" bars with full comp chisel .404" chain. The winner has a roller nose, and the other is a sprocket nose.

Anyone have an adjustable H jet large bore SDC for trade or sale? The SP125 was the first saw that I restored, so it has sentimental value.....

 

[Eccentric]

Thanks Aaron. I think the 050 over was about 12-13 seconds though. I forgot to mention but both 101B's are running 32" bars with full comp chisel .404" chain. The winner has a roller nose, and the other is a sprocket nose.

Anyone have an adjustable H jet large bore SDC for trade or sale? The SP125 was the first saw that I restored, so it has sentimental value.....

I wouldn't be surprised if that was indeed the actual time in the cut. I was keeping one eye on the timer at the bottom of the screen, while keeping my other eye (and my ears) on the saw. Not very precise....

 

[Ambull]

OK I evened the score a bit. I forgot about my project 101b saw. I robbed the adjustable SDC carb off that one, and put it on the SP125. I tached it out WOT somewhere around 10500 RPM.

One great thing about the SP125 is that you can change a carb in about 2 minutes.

This saw has tons of compression, but it just doesn't rev as high as the 101B's. In the vid you can hear it slow down when I lean on it too much.

It is behind all of the others still, including the Husky, but at least it broke 20 seconds.

chainsaw :: 007-7.mp4 video by jmueller57 - Photobucket

 

[Eccentric]

Much better JP!

Looks to be approximately 19 seconds..............a five second improvement.

I suggest you pull the rope out of the starter about 6" before shutting down these Macs, and any other old saw with pawls on the flywheel. You'll be surprised at how much force is exerted on the starter parts when the engine spins down and 'bounces back' against the compression. McCulloch owners manuals instructed users to do this. Your Homelite S E-Z and XP1020 and 1050 saws will benefit from this as well.

Don't do this with modern saws that have the pawls/dogs in the starter pully instead of the flywheel. You can damage the dogs/pawls by doing this with those saws. Same thing with Fairbanks Morse type starter equipped saws, such as C-Series and Zip Homelites. Just shut 'em off without pulling the rope first.

I emailed you some Tillotson HL and Walbro SDC service info. You may already have it, but it's useful stuff. Took a day off of work today. Still too damn sick. My cellphone sez I have a 'missed call' from you. Cell service out at my house sucks, and I have Verizon.......

 

[Ambull]

Much better JP!

Looks to be approximately 19 seconds..............a five second improvement.

I suggest you pull the rope out of the starter about 6" before shutting down these Macs, and any other old saw with pawls on the flywheel. You'll be surprised at how much force is exerted on the starter parts when the engine spins down and 'bounces back' against the compression. McCulloch owners manuals instructed users to do this. Your Homelite S E-Z and XP1020 and 1050 saws will benefit from this as well.

Don't do this with modern saws that have the pawls/dogs in the starter pully instead of the flywheel. You can damage the dogs/pawls by doing this with those saws. Same thing with Fairbanks Morse type starter equipped saws, such as C-Series and Zip Homelites. Just shut 'em off without pulling the rope first.

I emailed you some Tillotson HL and Walbro SDC service info. You may already have it, but it's useful stuff. Took a day off of work today. Still too damn sick. My cellphone sez I have a 'missed call' from you. Cell service out at my house sucks, and I have Verizon.......

Thanks for the info. The video is blurry, but I pull the cord out every single time, even on the Husky. I am so used to doing it that you don't even notice it.... lol. Sleight of hand.

 

[Eccentric]

Thanks for the info. The video is blurry, but I pull the cord out every single time, even on the Husky. I am so used to doing it that you don't even notice it.... lol. Sleight of hand.

Quicker than the eye....

 

[little possum]

Nice gaggle of saws.. What kinda loader is that?

 

[Ambull]

Nice gaggle of saws.. What kinda loader is that?

It is a Power Trac PT1460

T24 Class

 

[Warped5]

Posted this in 'swap meet' as well .... I have a nice Partner P100 clutch cover to trade for a nice Mac PM1000 clutch cover

 

[little possum]

It is a Power Trac PT1460

T24 Class

Nice setup!
We have a older Case W-4 that has a 50hp Long Diesel custom installed... It has now blown every seal that came with it (it had about 25hp Perkins on it)

 

[Steve NW WI]

Grrrr - took the PM6 out to try today, first thing I found is a fuel leak from "somewhere inside". Next was a lack of any urge to suck fuel into the carb by itself. I've got a spare carb from 8433Jeff that I'll try swapping out, see if that helps. If not I suppose a rebuild is in order.

To top it off, I dumped the fuel out and into my Rem S754, only to find that the Tilly in there needs a rebuild as well. That was not unexpected however.

PS - if you use too long of a screw on the bottom of the banana wrap handle, it will lock the saw up tight against the flywheel. Anyone care to guess how it is I know this little tidbit of information?

 

[wendell]

It appears we have lost the Shop Monkey.

 

[Eccentric]

Grrrr - took the PM6 out to try today, first thing I found is a fuel leak from "somewhere inside". Next was a lack of any urge to suck fuel into the carb by itself. I've got a spare carb from 8433Jeff that I'll try swapping out, see if that helps. If not I suppose a rebuild is in order.

To top it off, I dumped the fuel out and into my Rem S754, only to find that the Tilly in there needs a rebuild as well. That was not unexpected however.

PS - if you use too long of a screw on the bottom of the banana wrap handle, it will lock the saw up tight against the flywheel. Anyone care to guess how it is I know this little tidbit of information?

Ah, the calming, stress-relieving time spent working on a MM...

It appears we have lost the Shop Monkey.

When and how did he get sent to camp? The last post I saw of his was a harmless one in the 5-word thread on 9/17. That post is still there.
What'd I miss? I hate seeing guys go to camp, unless they are total trolls and/or spammers. Kyle was immature and irritating at times, but I didn't think he needed to go to camp. I even felt he was worth taking the time to bring him 'round back to the woodshed from time to time, in a effort to get him steered right...

http://www.arboristsite.com/member.php?u=57681

 

[8433jeff]

It appears we have lost the Shop Monkey.

Kids. Never listen, almost never learn.

Sure was fun being one though.

 

[ChainsawmanXX]

Kids. Never listen, almost never learn.

Sure was fun being one though.

What happend to shop monkey?

 

[Eccentric]

What happend to shop monkey?

That's the question indeed Jacob. He wasn't as mature as you seem to be, despite being a few years older than you. He must've pissed off the wrong person. He had a talent for that...:msp_wink:

 

[RandyMac]

I think he went too far in the WTF thread.

 

[Eccentric]

I think he went too far in the WTF thread.

That could well be. I don't spend much time there. I often have little people standing next to me while I'm on AS...:msp_wink: