McCulloch Chain Saws

Rugged made
Wesspur
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altatim said:
Got it out and ran very well. Clutch springs are a little weak as it VERY easily spins the chain even just a hair above idle and my idle is just above a stall. Chain wasn't as sharp as I would have liked but I didn't pay attention when grabbing one off the wall and it needed some love.

I must say though, this saw is smooth. Like butter! With the added anti-vibe I could hardly tell it was an older saw and the powerband was so smooth and torquey even cutting through 24" of tamarack it didn't even bog once. I will get the chain sharpened and take it out again as I only made one cut and realized I had a bad chain. I think this might become a staple saw for me though. It just feels and sounds nice to run and honestly thats 80% of what matters to me.View attachment 1180458
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Im pretty sure you're not the only one addicted to the sound of an old Mac. !!
 
Got the PM570 out again with a sharp chain and I guess the last two days were the final straw for something as it now has an air leak. I have yet to vac test it but are there any major failure points other than the crank seals that I should be looking at on this saw? Also its pretty tired and could use new rings as the cylinder is nice and clean but it only pulls 125 psi compression which is more than enough to start in 1-2 pulls cold but I wouldn't mind giving it another 40 years of service.
 
125 PSI is actually not too bad for most of the 10 Series. Check the flywheel side seal as they are often compromised when someone runs the saw without the clutch washer in place or tries to use the saw as a lawn mower, cutting hay bales, etc.

It is also possible that someone allowed the saw to run when the screw that hold the tank down were loose and damaged the gaskets between the cylinder, insulator, and tank bottom.

Mark
 
heimannm said:
125 PSI is actually not too bad for most of the 10 Series. Check the flywheel side seal as they are often compromised when someone runs the saw without the clutch washer in place or tries to use the saw as a lawn mower, cutting hay bales, etc.

It is also possible that someone allowed the saw to run when the screw that hold the tank down were loose and damaged the gaskets between the cylinder, insulator, and tank bottom.

Mark
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Do you have the seal numbers or SKF numbers on hand as well as the part number for the other gaskets? I plan on making an adapter to p & v test it this weekend and see what's up.
 
heimannm said:
You have to press the locking lever down with your thumb while holding the throttle open and release the throttle to lock it open. Try keeping your thumb off the lock...

View attachment 1181005

Mark
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I'm pretty sure I wasn't on it but who knows. I will run it some more and pay close attention to that. It felt more like a malfunction in the mechanism.
 
altatim - FY side seal depends on which bearing you have. Most of those models would use 63429 in which case the seal is McC 61618 or SKF 5756 (seal presses into the bearing outer race). If yours happens to have the 67905 bearing it requires McC 67906 for which there are no readily available AM seals (seal matches O.D. of bearing and sits beside the bearing).

PTO side seal in McC 110260 or SKF 6119 for the double lip. 6120 is a single lip that will also work.

Mark
 
I pressure tested the S55A and it had a pretty good bottom end air leak so I decided to break down the saw and replace all the seals and gaskets. I have found replacements for everything but the starter shaft oil seal. The IPL lists the part number as 104439, the seal from the saw is stamped with 168HD12 CR. I have reached the end of my search abilities to find a replacement seal and wondered if anyone knew what the part number for a replacement was. image.jpgimage.jpgimage.jpg
 
Bruce Hopf said:
I know heimannm has a lot of McCulloch Chain Saws, as well as myself, I was wondering if anybody else has a few McCullochs in their collection of Chain Saws, and are they for work, or for display. Thanks for your input. Bruce.
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I have an electramac em250,and a powermac 6 and both r for work but I'm having trouble finding parts for the electric one I'm in search for a trigger assembly switch if anyone one has any ideas
 
Got out into the woods Saturday to cut up some firewood from an oak blowdown that was hung on about 8' of the stem where it broke off several years ago. Ran my PM 555 and it did a good job (lots of bar oil)! 24" bar. My wife was mad at me because I forgot to bring her ear protection 😮
 

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heimannm said:
The 440 is an interesting saw, top tank like the 7XX models but built on the 87cc front tank block. Right hand start is awkward for some folks.

I have a couple in pretty good condition, I don't think I paid more than $150 for one but that's been more than 14 years ago.

This one came from James "Bigbore77" McGinn before he passed. Riding on the floor of my Ranger the day I picked it up - photo says it was 19 February 2010...

View attachment 1171896

It cleaned up pretty well.

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Mark
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Hello,
I cut timber with my Dad back when that saw was brand new. He used a Super 44A, a 440 and a 740. Someone stole the 440 and my Dad is gone. I would love to have one of those 440s if you would care to part with it. I am 73 years old and on SS so please be easy on the price.
Art Szabo
Ashland, Ohio
 

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