Trash em. They are a cheap, easy to replace. I consider them a maintenance item. And sadly a VERY overlooked item to many saw owners.
Uncle always said you should use up three sprockets to every carb rebuild lol
McCulloch Chain Saws
- Thread starter Bruce Hopf
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Uncle always said you should use up three sprockets to every carb rebuild lol
Sounds pretty unanimous....trash the old sprockets and get a new one.
Where do I find a decent sprocket for a 10-10? I found some made by Archer out of Australia, and then I see some unbranded ones on eBay for like 3 for $10.
Where do I find a decent sprocket for a 10-10? I found some made by Archer out of Australia, and then I see some unbranded ones on eBay for like 3 for $10.
Check the size of those rim drive sprockets. They should be 3/8-7T but there were both large and small spline drums that fit the 10 Series and 600 Series saws. The 10 Series would have come with a large spline but someone could easily swap that for a small spline from a 600 Series saw.
Mark
Mark
I'll measure when I get home, they look like the large size to me.
Is that how one gets a .325 pitch 12" bar on a PM850? Asking for a friend lol
I have a pretty good supply of 3/8-7T in large & small spline, 3/8-8T large spline, and .404-7T and .404-8T in large spline.
I also have a good supply of .354 rim sprockets if you want to go that route...
Mark
I also have a good supply of .354 rim sprockets if you want to go that route...
Mark
Thank you Mark! I may seek a couple 7T sprockets. I still need to go measure and confirm the size.
Is this a small spline??
2 sprockets off 2 different Pro Mac 10-10 saws measuring the same, does this make sense? They're both 7 tooth, 3/8 sprockets and I don't think they've ever been removed.
I'm measuring the inside bore of the sprocket (not in the grooves).
2 sprockets off 2 different Pro Mac 10-10 saws measuring the same, does this make sense? They're both 7 tooth, 3/8 sprockets and I don't think they've ever been removed.
I'm measuring the inside bore of the sprocket (not in the grooves).
Rocker59
ArboristSite Member
From what I have seen, the Mcculloch clutch drums were the small spline.
That would make sense, my 10-10 drums are branded McCulloch.
McCulloch PN 86948/214200 and Oregon 18459 are small spline drums to fit the 10/600 Series saws.
McCulloch PN 86947 is a large spline drum that fits the 10/600 Series saws. I'm sure there was an Oregon equivalent but I don't have the number handy.
Mark
McCulloch PN 86947 is a large spline drum that fits the 10/600 Series saws. I'm sure there was an Oregon equivalent but I don't have the number handy.
Mark
I don't think I would know when a sprocket is too worn. 
You'll know...
Looks like I have the small spline drum:
Now THAT is impressive lol.
Rim drives may also experience some wear.
When the engines rev's just fine but the chain doesn't move...you may need to check the drive sprocket...
Mark
When the engines rev's just fine but the chain doesn't move...you may need to check the drive sprocket...
Mark
This is for sale locally for $100, says it's had the carb rebuilt and chain sharpened so it sounds like a runner.
Can anyone recognize the model from this picture?
Thoughts?
Can anyone recognize the model from this picture?
Thoughts?
Rallyeguy
ArboristSite Member
It's a Mac 15
Early Homeowner saw by McCulloch
80cc's of fun.
Info : https://www.acresinternet.com/cscc....03177afa9cfee0ed88256b610014d950?OpenDocument
Early Homeowner saw by McCulloch
80cc's of fun.
Info : https://www.acresinternet.com/cscc....03177afa9cfee0ed88256b610014d950?OpenDocument
Thanks, that was fast!
That's the later production model with the black fuel tank,its most commonly found.I'm still wanting (some day,no big rush) the early model with the yellow tank.
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