McCulloch Chain Saws

[djones]

Thanks to joeymt33's input I have found out that the carb on my 7-10 belongs to a 2-10/3-10 and the one that should be on it will have 16 1/2% more air volume. It would be a 15.88mm venturi that replaced a 19.04mm venturi causeing the poor chainsaw to starve for air, luckly I have a 19.04mm venturi carb to put on it which will also allow for the adjustment of the carb with the air filter off. The carb that came with the saw has to have access ports in the cover to allow adjustment of the carb. A 16 1/2 % increase in air should put some more power into the saw as well. We'll see when I come up with a B&C for it to work with. I'm still looking for a 24" used b&c if anyone has one to trade or sell, anyone ?? :msp_thumbup:

 

[buzz sawyer]

Looking great Dave! That piece was mounted right above the bar. I was told it's a chain catcher that was usually removed and lost.

I found the rear mounting hole for it this morning - hidden behind the upper bar mount capture nut.
Man, this has been an adventure. There were times I thought I would not be able to get it back together. The remaining paint was really tough. I had to resort to stripper to remove it. All in all, it was it pretty good shape mechanically, just loaded with crud.
I think the only two things I need now are the fuel pump diaphragm and the spark plug cover. I may make a temporary one out of sheet metal. I'll try...er....will get it started once we get some warmer weather. I'll post some better photos too.

 

[Dennis Gauge]

I'd like to find a chain brake like that for my 7-10.

 

[heimannm]

You're killing me guys.

Ray - I was hoping it would be too warm or too snowy or too windy or...

Buzz - Let me know if you find a source for the diaphragm, I have a few of the "double hook" versions off the early 3-25's but need 3 of the later single hood ones like used on the 47 and 73/77 saws.

Dennis - any 10 Series cover will work, try to find a junk PM55, 555, or something similar.

Please take it easy on my guys, I won't get home until Saturday.

Mark

 

[rheima]

pictures

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Hello all! My younger brother, heimannm, was going to help this weekend in Newton,Iowa to help take down 95 dead or dying oak trees. One tree measured 5 foot in diameter. The rest were not quite that big but all were mature trees. Sounds like he is stuck still working so I will give you some of the details of our firewood weekend! About 12 people working at different times. One big John Deere trac hoe,two Cat skid steers with rubber tracks,one rubber tired Cat skid steer with several grapple buckets, forks and buckets. A big tandem axle dump truck, a medium sized single axel dump truck and a tonner pickup pulling a double axel dump trailer. Over seventy-five loads of firewood hauled to six different places. Much of the wood was cut up in usable lengths before it was put on the trucks. None of the wood was split other than what happened when the trees fell down. The wood came from two city parks and the trees were infected with Oak Wilt. We had maybe 15 saws to use and there were five to six going at one time. One person pretty much stayed in the enclosed trailer and sharpened chains and kept the saws running. I brought a couple of my old saws out to use, a 1-63 gear drive that was shooting a steady stream of fire out the exhaust when cutting(not the safest but impressive in a macho way) and the other cutters complained about the noise, and my 10-10 that everyone complained so much that it hurt their ears even with protection that I had to put them back in the truck and use two of my creamsicles, a 031 and 360 Pro. I have never been involved with a group cutting experience like this before and it was fantastic. My son-in-law and his friends were the owners and operators of most of the equipment and it was impressive to watch and be a part of. I swear a couple of the guys could drive finish nails with the track hoe and skid steers. We started after noon on Thursday and worked till about five each night. We finished at 4:30 Sunday evening and only the 6 in. and smaller brush and a couple of piles of sawdust (big) were left. Several of the wives made food and one morning we even had breakfast at the site. The only problem that it was maybe a little too warm and we had to battle mud in the afternoons but no one got hurt and that's the most important thing. We all probably have at least 2 years worth of wood out of this weekend of labor. I will try to get some pictures on the site soon but beer and lots of sleep sound good right now.

Ray (rheima)

 

[Warped5]

Ray, THAT looks like a party!

 

[rheima]

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Hello all! My younger brother, heimannm, was going to help this weekend in Newton,Iowa to help take down 95 dead or dying oak trees. One tree measured 5 foot in diameter. The rest were not quite that big but all were mature trees. Sounds like he is stuck still working so I will give you some of the details of our firewood weekend! About 12 people working at different times. One big John Deere trac hoe,two Cat skid steers with rubber tracks,one rubber tired Cat skid steer with several grapple buckets, forks and buckets. A big tandem axle dump truck, a medium sized single axel dump truck and a tonner pickup pulling a double axel dump trailer. Over seventy-five loads of firewood hauled to six different places. Much of the wood was cut up in usable lengths before it was put on the trucks. None of the wood was split other than what happened when the trees fell down. The wood came from two city parks and the trees were infected with Oak Wilt. We had maybe 15 saws to use and there were five to six going at one time. One person pretty much stayed in the enclosed trailer and sharpened chains and kept the saws running. I brought a couple of my old saws out to use, a 1-63 gear drive that was shooting a steady stream of fire out the exhaust when cutting(not the safest but impressive in a macho way) and the other cutters complained about the noise, and my 10-10 that everyone complained so much that it hurt their ears even with protection that I had to put them back in the truck and use two of my creamsicles, a 031 and 360 Pro. I have never been involved with a group cutting experience like this before and it was fantastic. My son-in-law and his friends were the owners and operators of most of the equipment and it was impressive to watch and be a part of. I swear a couple of the guys could drive finish nails with the track hoe and skid steers. We started after noon on Thursday and worked till about five each night. We finished at 4:30 Sunday evening and only the 6 in. and smaller brush and a couple of piles of sawdust (big) were left. Several of the wives made food and one morning we even had breakfast at the site. The only problem that it was maybe a little too warm and we had to battle mud in the afternoons but no one got hurt and that's the most important thing. We all probably have at least 2 years worth of wood out of this weekend of labor. I will try to get some pictures on the site soon but beer and lots of sleep sound good right now.

Ray (rheima)

 

[rheima]

More Pictures from Newton

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More Pictures from Newton

 

[rheima]

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More Pictures from Newton

 

[rwoods]

 

[rheima]

Newton weekend

This is the first time I have tryed to include any pictures and am not having very good luck. Be patient with me because I know that it didn't happen if there no pictures!


Ray

 

[rwoods]

 

[promac850]

You are...

1. Having way too much fun bucking that stuff up
2. Lucky to have a brother that is a Mac genius
3. Well... LUCKY!

 

[rwoods]

This is the first time I have tryed to include any pictures and am not having very good luck. Be patient with me because I know that it didn't happen if there no pictures!


Ray

Got you covered. Ron

 

[rheima]

Newton weekend

Thanks Ron for posting the pictures. Maybe I will figure it out in a day or so!


Ray

 

[MEATSAW]

That looks like fun all the way around. I'd have a blast running saws or the cat!

 

[Steve NW WI]

Nice work Ray, rep sent!

There's a link in my signature showing how to embed pics, check it out when you have some time.

 

[buzz sawyer]

Buzz - Let me know if you find a source for the diaphragm, I have a few of the "double hook" versions off the early 3-25's but need 3 of the later single hood ones like used on the 47 and 73/77 saws.


Mark

Thanks Mark
This carb diaphragm has two hooks but I got it softened up nicely with the combo of brake fluid and mineral spirits. I need the one for the fuel pump. I got it softened as well but it's too wrinkled. I sent the old one to a site sponsor to hopefully cut out a new one - no metal, just a flat piece of material. If I could find material, I could cut it.

Got the rubber socket for the handle installed in the flywheel cover last night - worked perfectly. Everything in place now except for the fuel pump.

BTW, anyone know what the initial mixture settings should be for this? I'm guessing 1 turn out for both.

 

[HeRoze]

I think I finally figured out the procedure to set the frappin' points on the d36. I broke out the analog VOM for a change and figured out what I was doing to determine when the points opened.

Question: how critical is the setting?

I hope this is a case where close enough is indeed close enough, or there is a method to control the adjustment a bit better.

Right now it looks like the timing is advanced about 5 degrees. I can't figure out how to tweak and hold the silly thing for the few thousandts difference between the current setting and 'ideal'. I tinkered with it about 20 minutes waffling back and forth around what I take to be optimal (leading edge of magnet at the trailing edge of coil arm). I used two screwdrivers - one on the set screw, the other used to pry the arm of the point using the little notch.

 

[joeymt33]

I think I finally figured out the procedure to set the frappin' points on the d36. I broke out the analog VOM for a change and figured out what I was doing to determine when the points opened.

Question: how critical is the setting?

I hope this is a case where close enough is indeed close enough, or there is a method to control the adjustment a bit better.

Right now it looks like the timing is advanced about 5 degrees. I can't figure out how to tweak and hold the silly thing for the few thousandts difference between the current setting and 'ideal'. I tinkered with it about 20 minutes waffling back and forth around what I take to be optimal (leading edge of magnet at the trailing edge of coil arm). I used two screwdrivers - one on the set screw, the other used to pry the arm of the point using the little notch.

me too, i'm always wondering...could this saw run a little better if i had just got the points a couple thousandths closer to ideal. opcorn: its never a problem to get it set where the saw runs good, but that sweet spot is tough to find sometimes