McCulloch Chain Saws

[Deererainman]

Took a pic fo the coil. Never had one look like this.

I think I'll pull a coil from one of the 10-10's to get it up and running.

 

[rwoods]

Try cleaning the points, often as simple as just dragging a piece of paper through them to wipe off any accumulation. Old timers used a dollar bill for this...

Mark

Today it would take at least a twenty. Ron

 

[62alf]

Picked up this Pro 10-10 Auto a few days ago. It was on the local craigslist for $15. Ended up getting it for $13. Checked fuel line and it looked good so fresh fuel and 6 pulls later it was running. Dosen't look like it has had much use, has McCulloch chain still on it. Original? I thought it may be good parts for our others, but will stay a runner for sure.

 

[PogoInTheWoods]

Very nice.

 

[heimannm]

Indeed, I really like the older models with the short clutch cover. That one is a good looking saw.

Mark

 

[62alf]

Thanks guys! It is the best looking 10-10 I have. I too like the short clutch covers. This is the first one for me with short chainbrake. I have taken long chain brake covers and replaced with plain short covers..

 

[longbar]

How does a 790 compare to a 797 or 125? I never here anything about them.

 

[sawfun]

A 790 is 103cc, a 797 is 123cc. Otherwise they are pretty much the same with maybe carb or having a decomp as the difference. The 797 is bigger, so more power and both are direct drive. A 125 is newer with AV and is 123cc's.

 

[sawfun]

I just picked up two 790's, a 795, and a 797 today. However, that is a rare find.

 

[Deererainman]

Well, I managed to get spark. Filed the points and changed the coil. While I had the starter off, I tried to start it using a drill on the flywheel bolt. After sputtering a few times, I decided to see what kind of compression I had. 85-90 lbs with the drill spinning the engine over.

I found some pretty heavy scuffing on the exhaust side of the piston.

The cylinder looks like it will clean up.

The only #'s on the piston are these: Is it a A,B or C type??

Took a pic fo the coil. Never had one look like this.

I think I'll pull a coil from one of the 10-10's to get it up and running.

 

[longbar]

A 790 is 103cc, a 797 is 123cc. Otherwise they are pretty much the same with maybe carb or having a decomp as the difference. The 797 is bigger, so more power and both are direct drive. A 125 is newer with AV and is 123cc's.

Thanks for the info sawfun. So the 797 has more balls. Is the extra cc pretty noticable? I picked up a non runner 790 and am wondering if its worth the time and money to fix.

 

[homelitejim]

Thanks for the info sawfun. So the 797 has more balls. Is the extra cc pretty noticable? I picked up a non runner 790 and am wondering if its worth the time and money to fix.

Yes and yes.

 

[joeymt33]

Well, I managed to get spark. Filed the points and changed the coil. While I had the starter off, I tried to start it using a drill on the flywheel bolt. After sputtering a few times, I decided to see what kind of compression I had. 85-90 lbs with the drill spinning the engine over.

I found some pretty heavy scuffing on the exhaust side of the piston.

The cylinder looks like it will clean up.

The only #'s on the piston are these: Is it a A,B or C type??

The engine will have a stamp on it near the decompression port. If there is not stamp, it's a "B" cylinder. I may have joined the conversation late. What saw are you working on?




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[Deererainman]

It's a Super Pro 81

The engine will have a stamp on it near the decompression port. If there is not stamp, it's a "B" cylinder. I may have joined the conversation late. What saw are you working on?




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[sawfun]

Longbar, I have not run a 790 or 795 against a 123cc Mac but would expect some difference in torque not speed with bars over 36" and would expect they could run a 50" bar where the bigger saws could run 2 or 3 foot more bar.

Yes a 790 is worth rebuilding if complete enough. While heavy for a 6 cube saw, they were well made and are a true muscle saw. They are akin to a SS396 chevy where the 797 is the SS427 or 454 or basically a smaller big block. If you don't want it, many here on the forum would. They do not bring the money the bigger saws do in resale their larger brother does so rebuilding one is a labor of love. If you are not cutting very big old growth, that saw will still serve you well.

 

[heimannm]

Back a page to rarefish - that is a one man bar for the early saws like the 3-25...many customers were not convinced a one man saw was a real thing so the stinger made it more appealing. The bar appears to have the narrow slot for the 5/16" bar studs which was found on the earlier models.

deere... - If there is no stamp on the cylinder (top fin) it is a "B", customchainsawparts has the piston with rings and bearings for $45 + shipping, a real deal.

From my limited experience, the 795 is a long ways behind the SP125. I have most of the parts on hand to put together a 797, just no time yet to do it. I have high hopes for that one.

Mark

 

[Deererainman]

Thank you sir.

deere... - If there is no stamp on the cylinder (top fin) it is a "B", customchainsawparts has the piston with rings and bearings for $45 + shipping, a real deal.

 

[rwoods]

Jeff, clean that cylinder good. If you use reading glasses - wear them when you inspect your work. If you don't, ... well I would rather not say what might happen, but it won't be pretty. If rebuilt properly, I believe this could become one of your favorite saws. Ron

 

[heimannm]

Any of the 82 cc McCulloch's are fun to run, but I really like the SP81 for their vim and vigor.



Joey stopped by one day with a few of his, I added a few of mine...we had fun showing off anyway.



Mark

 

[rwoods]

Mark and Joey have me beat, but I have a few of the late models (need an updated picture - 3 not shown and one on far right is now in Mark's herd):



Great cutting saws:



Ron