McCulloch pro mac 700 rebuild thread

[brandonstc6]

I won't have any more progress until I get my crank seals and until my oil line comes in. I will leave you with some pictures of my small mcculloch collection. I have many pm610s not pictured.

Check out this 2-10 frankensaw,

All of these saws except the 1-40 and the pro Mac 700 I'm rebuilding were pulled from the scrap pile. All have good compression and spark, but most still need carburetor work.



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[brandonstc6]

I couldn't get any crank seals so I had to order some. I am going to work on my 1940 Chevy and some MS 250s while I am waiting on my parts.


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[brandonstc6]

I didn't take any pictures but my clutch side crank seal came in and my oil hose came in. I installed both of them and I was cleaning my parts and this gasket came off. Does anyone know where it goes, it's not the tank gasket.

I will get some pictures when I install my other seal, in case anyone wants to see how I did it.


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[heimannm]

That looks like the material they used to seal the back of the air box / tank top. There is a gasket that goes around the tank and that seal material keeps the air box tight so no dust will leak in under the air filter.

There is an e-bay seller making complete gasket sets for the 10 Series saws with this seal from rubber rather than the sticky putty type in the original.

http://www.ebay.com/itm/1-New-McCul...678534?hash=item5b2bf7b746:g:3kIAAOSwzaJX7Ycd

Mark

 

[brandonstc6]

That looks like the material they used to seal the back of the air box / tank top. There is a gasket that goes around the tank and that seal material keeps the air box tight so no dust will leak in under the air filter.

There is an e-bay seller making complete gasket sets for the 10 Series saws with this seal from rubber rather than the sticky putty type in the original.

http://www.ebay.com/itm/1-New-McCul...678534?hash=item5b2bf7b746:g:3kIAAOSwzaJX7Ycd

Mark

I see now, that makes sense. I have some rubber gasket material. I'll see what I can do. I may end up just getting me one.


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[brandonstc6]

Thanks


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[dce1843]

That looks like the material they used to seal the back of the air box / tank top. There is a gasket that goes around the tank and that seal material keeps the air box tight so no dust will leak in under the air filter.

There is an e-bay seller making complete gasket sets for the 10 Series saws with this seal from rubber rather than the sticky putty type in the original.

http://www.ebay.com/itm/1-New-McCul...678534?hash=item5b2bf7b746:g:3kIAAOSwzaJX7Ycd

Mark

Would this fit a DE 80?

 

[heimannm]

In a word, no; the DE80 is 82 cc and built differently with the carburetor hard mounted to the cylinder and a boot sealing between the intake stack and the air box.

The fuel tank and air box is a sealed unit so you don't need the fuel tank gasket or the air box seals. The muffler gasket is different as well due to a larger outlet area. From that kit the DE80 would only use one carburetor gasket, one intake manifold gasket, the oil pump gaskets, the oil tank gasket, and you could use the fuel cap gasket if you needed it.







Mark

 

[brandonstc6]

I made me a air box gasket and I re-used my tank gasket. I sealed everything up with a liberal amount of motoseal.

I didn't get any more pictures because my phone died. My other crank seal should come in tomorrow. I will install the seal and try to vacuum test the saw.


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[brandonstc6]

It's coming together nicely.

I put some motoseal on top of the oil tank gasket to insure a good seal.

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[heimannm]

One day you will regret sealing the oil tank, I speak from experience. Although it only has one screw holding the cover on, they very rarely leak enough to be concerned about. New gaskets are easy to make, even easier when you only need to go up in the attic and grab a new one. Some that I have are so old and dried out they have shrunk and no longer fit properly unless soaked for several days.

Mark

 

[brandonstc6]

One day you will regret sealing the oil tank, I speak from experience. Although it only has one screw holding the cover on, they very rarely leak enough to be concerned about. New gaskets are easy to make, even easier when you only need to go up in the attic and grab a new one. Some that I have are so old and dried out they have shrunk and no longer fit properly unless soaked for several days.

Mark

Why is it a problem? Should I go ahead and take off the tank lid and remove it? I used a new gasket along with a the motoseal.


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[heimannm]

If you have any problems with the automatic oil pump or the sealing of the pump (read-smoker) you will have to take it apart again. If you need to adjust the automatic oiler output you will need to take it apart again. If you for get to install the screw through the oil tank to the fuel tank, you will have to take it apart again.

I have had maybe one or at most two that would not seal properly with just the screw and the gasket. In the worst case I just go up in the attic and get an oil tank cover that is in better condition. T he PM series had a much better cover design with the reinforcing ribs, they never leak.

Mark

 

[brandonstc6]

If you have any problems with the automatic oil pump or the sealing of the pump (read-smoker) you will have to take it apart again. If you need to adjust the automatic oiler output you will need to take it apart again. If you for get to install the screw through the oil tank to the fuel tank, you will have to take it apart again.

I have had maybe one or at most two that would not seal properly with just the screw and the gasket. In the worst case I just go up in the attic and get an oil tank cover that is in better condition. T he PM series had a much better cover design with the reinforcing ribs, they never leak.

Mark

I see now. If I do have to take off the cover, I hope it comes off. If I re-do another one of these saws I will keep that in mind. Thanks for the help.


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[brandonstc6]

I used a socket to install the crank seal.

I got it all back together. Now I just have to rebuild the carburetor. I apologize for the lack of pictures in between. I got kinda carried away and didn't take any pictures.


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[Kevin hayes]

I used a socket to install the crank seal.

I got it all back together. Now I just have to rebuild the carburetor. I apologize for the lack of pictures in between. I got kinda carried away and didn't take any pictures.


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my favorite saw to run..im currently rebuilding and repainting it and it isnt going to be the famous yellow hehe

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[Asbacan]

Hello. What carb do you have, i mean hat series and what repair kit for carb. Nice work with promac 700

 

[brandonstc6]

Hello. What carb do you have, i mean hat series and what repair kit for carb. Nice work with promac 700

It has a walbro SDC, I can’t remember the exact number but I went with a NOS carburetor. I would find a NOS one and ask here if it is right for your saw. Or you can rebuild your old one.


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[heimannm]

PM700 would likely have a Walbro SDC 44A. The full kit is K10-SDC.

Mark

 

[jerrycmorrow]

Lookin good brandon. Carry on