MCCULLOCH The official McCulloch thread

[farminkarman]

For those that don't wander over to the Vintage Chainsaw Museum thread, the SP60 I recently got from Ted J (Warped5)

View attachment 381937

View attachment 381938

It is a nice complement to the one I already have in the display. This one has the hand guard, the other one is equipped with a chain brake.

Saws with the cold weather set up are supposed to have a special brass mesh air filter.

View attachment 381940

Mark

That is a looker for sure!

 

[heimannm]

I took this SP105 with me to the PNW GTG last week, we did not end up cutting with it but I decided it was time for a good clean up and move it in to the display. I have used this one a few time harvesting firewood and it is will definitely cut. This one came to me from Roland (Belgian).











Mark

 

[heimannm]

I have another 105 that I can use if the need arises...





Mark

 

[Al Smith]

I've got a low hours 105 that had sat in a repair shop in I think Wisconsin for over 30 years with a broken recoil .It had a Mac branded .404 semi chisel chain,24" I don't think ever had a file to it .That one is on Chainsaw Collectors and is a shelf queen .I'll just say it's got plenty of power .

 

[mirage]

Got a Mac 250 with the primer pump on it. It is hard to start cold but starts one pull the rest of the time. Can anyone tell me how many times I should pump the primer to get it to start cold?

 

[heimannm]

The primers are quite variable in output depending on the condition of the internal parts. I normally started with 5 pumps, pull a couple of times, 5 more pumps, pull, etc.

Of course the problem is once the fuel system is fully primed and moving fuel, the primer can dump a lot of fuel in a hurry. Once it starts running out of the muffler you know you've gone too far...

I did manage to rebuild some primers and found there are two different plunger types, the ones with the aluminum plungers seem to move a lot more fuel than the ones with the bright steel plungers.



Mark

 

[mirage]

I do have the steel one. Thank you. Is there a rebuild kit for the primer pump?

 

[heimannm]

No, but I have the parts needed if you want to tackle the job. You have to drill a hole in the back of the primer to press it apart, then weld it shut or tap & install a short set screw before reassembly. There are You Tube videos and a full description of the process over on Arborist Site.

McCulloch Carburetors

Where do you get the rebuild kits for McCulloch carbs? Can someone please post a link? These are also available third party from chainsawr.com he gets them from sugar creek supply. Cost about $30.

www.arboristsite.com

Mark

 

[edju1958]

Funny you should mention a 250.I got my 250 out last week & it'll only run with me pumping the primer.It used to run like that,but then after a few pumps it'd catch & run on it's own.My guess is the carb needs rebuilding.I'm just waiting on either Jeff or Brian to come up with some pump diaphragms to be added to their kits.

 

[Al Smith]

One of my 250's ,with a black cover does have a flatty with a primer .Evidently the diaphragm must be stiff because it gave me fits .Why they ever used a flatty when the Tilley HL did a good job already???

 

[cinci5]

in case your wondering how I make the diaphragm disc's
lay a sheet of aluminum on CNC mill and dimple hole pattern
then manually punch out center hole
then punch out disc ( thanks Mark)
it comes out as such ------------------------------------------------------------------------------------------------------------------

 

[cinci5]

after that I go and manually punch out the rest of the holes
the dimples are for locating the punch
rivet and seal it together (deburr of course) and Wala disc for diaphragm assembly's

 

[edju1958]

Jeff,I'll probably be needing at least 2 complete kits,maybe 3.

 

[cinci5]

Security Measure

www.ebay.com

Jeff,I'll probably be needing at least 2 complete kits,maybe 3.

 

[cinci5]

Kit now available for the 3-25 !!!!

 

[jacob j.]

"Very old technology":

McCULLOCH Vintage Pro-Mac 650 Collector's Model | eBay

Find many great new & used options and get the best deals for McCULLOCH Vintage Pro-Mac 650 Collector's Model at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[heimannm]

What is the purpose of the hole circled in red below? I know that the one circled in green is the impulse (pulse) passage for the automatic oiler but I am having trouble cyfering out the purpose of the hole towards the bottom.





Mark

 

[cinci5]

"Very old technology":

McCULLOCH Vintage Pro-Mac 650 Collector's Model | eBay

Find many great new & used options and get the best deals for McCULLOCH Vintage Pro-Mac 650 Collector's Model at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Is that for real ??

 

[fossil]

What is the purpose of the hole circled in red below? I know that the one circled in green is the impulse (pulse) passage for the automatic oiler but I am having trouble cyfering out the purpose of the hole towards the bottom.

View attachment 383142

View attachment 383143

Mark

Just guessing,

Maybe because of this tube? I think it's on the 380 or the CDN Super 250.

 

[Al Smith]

That Mac 650 is just another example of chuming the waters . There's another on flea bay for a gear drive Mac that doesn't run for about 4 grand . I think it's more for humor .