MCCULLOCH The official McCulloch thread

[heimannm]

SP81E almost all together. I left the two piece ignition in this one (saw came from Madsaw/Bob Pierce) but I will admit that the later one piece ignition has a much stronger spark. Ignition timing is essentially the same as best I could determine with my basic set up.











Mark

 

[heimannm]

Next in the series of 82 cc McCulloch saws was the venerable PM9850 which may be the best saw of the lot. My first one came with a "two piece" piston but that was remedied with a NOS one from customchainsawparts and with some cleaning and work I had a runner. Following my experience with the broken piston, I have heard of several other PM850 with similar problems, something McCulloch seemed to have identified and corrected with later versions. Surprisingly, the broke piston did not destroy the cylinder and with a little cleaning this one was still serviceable. This particular saw does not see much use.







Later on I found another PM850 in a closed shop, very dirty on the outside but very nice inside, I do put this saw to work when I have a chance.





Mark

 

[heimannm]

Somewhere between the CP70L and the SP80 (I think I have it straight) was the CP80 DX or simply 80DX, I don't have one and haven't seen one in person but I do have photos of Mike Jackson's 60DX and an 80DX in Japan, 80DX photos must be on my other computer as I can't find them right now.



I would love to find a couple of good examples of the 60DX and 80DX saws to put into the collection.

After the PM850 the lineage becomes a bit cloudy. According to the IPL's that I have the order is PM805 ('82), PM850 Super ('84), PM800 ('87/'88), DE80 ('87), and the PM 8200 ('92).

Mike Acres site has the dates listed a bit differently with some longer runs that don't see to agree with the number of saws out there like the PM805 and the PM850 Super:

Saw My IPL's Mike Acres
SP80 1972 1971-73
SP81 1976 1973-77
SP81E 1977 1977
PM850 1977-79 1977-80
PM805 1982 1982-95
PM800 1987-88 1980-85
PM850 Super 1984 1983-1994
DE80 1987 1985-1990
PM8200 1992 ?? Mike does not have the PM8200 listed

Mark

 

[heimannm]

On the subject of the PM800, there were early and late models with and without the compression release and/or the "Q" port.

I have examples of the PM800 with the compression release...



and without...



The location of the compression release was different on the PM800 saws as well as the DE80, with a coarse threaded pop up valve that installed above the muffler.





Saws that don't have the port opened use a 3/8-16 x 3/8" long hex head cap screw to hold the top brace for the muffler/screen. Saws that have the port opened use the compression release valve to hold the brace.

I have one example of the PM800 with a 1/2 wrap handle but most that I've seen had the full wrap.



Mark

 

[Al Smith]

There should be a bit of firewood in that.

About a cord and a half plus 60 foot of good saw log .About 15-1600 board foot .I have no idea what killed that tree .One August it just died on the vine .

Getting the logs out of the woods put a test to my hill billy engineering .A 16 foot oak log 3 feet in diameter is a bunch of weight .

 

[Steve]

I love my 10 series. Have atleast one of each displacement. My favorite is a PM60. Just like the snap it has and it seems lighter than a 10-10. (No scientific proof to back that statement.)

 

[heimannm]

Here is one I did not think I could find, then this one came to me in excellent condition with very little run time.







I need to get some with the bar and chain, very nice looking set up.

Mark

 

[heimannm]

The Double Eagle 80 was a totally unique 82 cc McCulloch saw in that the carburetor was hard mounted to the cylinder with a flexible boot around it. It did not seem to really catch on and in my experience there are not that many of them around.






From the outside it is hard to know there are any differences under the hood. I went all out on this one with the extra skid plate on the bottom and a NOS Speed Mac bar.







Mark

 

[Lee H]

Mark, That one saweeeeeeeet Pro Mac 850 Super. So now whats
the difference between the PM850 and the super other than the
tall air filter and cover. Looks like an 800.

I never knew the DE80 had that type of carb set up. I will have
to take a look at mine. Slowly learning about these 82cc Mac's.
I do know my PM850 will spank my 800 and the 800 is near
new.

 

[Workshop]

I've got a DE80 also and didn't know that it's carb setup was different. Interesting.
I'd like to find a 28" bar for mine. 20 just seems small.

 

[exSW]

I love my 850. Thanks Mark.

 

[heimannm]

Lee - I think in fact the PM850 Super is really the PM800 with a different label. I am not inclined at this point to tear one of each down just to compare the cylinders but considering the production dates for each, my guess is PM800 sales were underperforming and some folks were begging for the good old 850 back and McCulloch came up with this plan.

Workshop - bars for the 10 series are pretty easy to come by since the same mount was used by several manufacturers at the time including McCulloch, Poulan, Echo, and others. I think it is known as D-176.

Mark

 

[heimannm]

Last in the 82 cc series is the PM8200, in many ways they fell back on the tried and true concepts but added a few twists with this one. Thanks again to Ron Woods for the kind gift of the PM8200 you see below.

The carburetor was once again mounted in the air box with a boot to the cylinder like the earlier models, but the crank case features 6 bolts compared to the 8 bolt crank case on the earlier models.



The PM8200 also has a three piece crankshaft and uses c clips to hold the piston pin in place compared to the press it in the rod on other 10 Series models.

I'll put up some more later.

Mark

 

[heimannm]

Three piece crankshaft.



Piston pin secured with c clips, photo courtesy of Joey Taylor.



"Q" port



The finished product.



Ron knows how to pack a saw for shipping.



Mark

 

[countryhog]

Looking for some rings for a non-Mac. Wondering if the rings for a PM-70 or any of the other "70" saws are thin rings (0.023") and are available. I do know the rings for a PM60 are thin. The ones for my saw are unobtanium. If they are thin and are available I'll file them down to fit my other saw (Poulan 4000). Thanks

 

[Mark71gtx]

I had this PM8200 follow me home the other day. I got around to checking it out tonight. I put fuel in it and it hit (I was surprised since I got it from a dead saw section at an old saw shop). It would rev like mad and knock off. I pulled the carb and it was like new inside. The fuel line broke upon removal so I made a new one. I put the spring back in the new line. I fired it up again and it still revved like mad. Pulled the muffler and piston looked as good as new. Upon further inspection I saw the intake boot was not connected. Two screws later and it runs like a champ! The spark screen was wrecked so I removed what was left of it. Would it be advisable to run this saw without the screen? For those who have not seen one, the screen is pretty sizable and basically is the only exit for the exhaust... The saw looks to have had very little use. It is missing the brake handle and no bar o chain. What size chain would this saw have came with? I would like to put the right size chain on it.

 

[exSW]

I had this PM8200 follow me home the other day. I got around to checking it out tonight. I put fuel in it and it hit (I was surprised since I got it from a dead saw section at an old saw shop). It would rev like mad and knock off. I pulled the carb and it was like new inside. The fuel line broke upon removal so I made a new one. I put the spring back in the new line. I fired it up again and it still revved like mad. Pulled the muffler and piston looked as good as new. Upon further inspection I saw the intake boot was not connected. Two screws later and it runs like a champ! The spark screen was wrecked so I removed what was left of it. Would it be advisable to run this saw without the screen? For those who have not seen one, the screen is pretty sizable and basically is the only exit for the exhaust... The saw looks to have had very little use. It is missing the brake handle and no bar o chain. What size chain would this saw have came with? I would like to put the right size chain on it.View attachment 17358

Nice score.

 

[Mark71gtx]

Thanks. I had never seen one before and it looked so lonely there on the shelf with all of those other "parts saws"

 

[sawfun]

I had this PM8200 follow me home the other day. I got around to checking it out tonight. I put fuel in it and it hit (I was surprised since I got it from a dead saw section at an old saw shop). It would rev like mad and knock off. I pulled the carb and it was like new inside. The fuel line broke upon removal so I made a new one. I put the spring back in the new line. I fired it up again and it still revved like mad. Pulled the muffler and piston looked as good as new. Upon further inspection I saw the intake boot was not connected. Two screws later and it runs like a champ! The spark screen was wrecked so I removed what was left of it. Would it be advisable to run this saw without the screen? For those who have not seen one, the screen is pretty sizable and basically is the only exit for the exhaust... The saw looks to have had very little use. It is missing the brake handle and no bar o chain. What size chain would this saw have came with? I would like to put the right size chain on it.View attachment 17358

I cannot say about the screen since I do not know the cutting conditions it will be used for. However they will pull a 28" bar very nicely and with good balance. A 460 Stihl will smoke it until you lean on them. Then the Stihl stops and the Mac keeps cutting happily. I would guess it would run a 32" bar better than the 460, but if like my 800, prefers the 28". The 850's do well with a 32", but just try and find one of those as nice as that 8200 you showed.

 

[Mark71gtx]

Thanks for the info. What chain should it have? 3/8"? .404?