McCulloch Chain Saws

[sawbones]

The chain brake assemblies for the 105/125 has to be some of the more rare parts on the planet........

I think every red-blooded logger immediately tore off the brake and chucked it back in them days.........

Didn't the SP125C come standard with a brake?


Casey

Maybe a later C came with a brake but this ad does not show one.

The saw in this pic was bought new around 77 and has the mount hole for a brake but never had one installed. Maybe it was an option..

this saw had been hidden in a closet and pulled out by a grandson and sold to me, Never had gas in it. I kept it for a while but was afraid to put gas in it and sold it..

 

[056kid]

The add is my backround now!

 

[heimannm]

I have a couple of SP125C saws and neither has a chain brake. I can't say if they are stock or if another clutch cover was removed in favor of the plain version.

Briantutt - I don't see anything out of order with the clutch, how does the sprocket look? I had to replace sprocket/drum on an Eager Beaver I was servicing for a friend due to the fact the spur sprocket wore completely through.

Mark

 

[Jacob J.]

It was real common back then to take the cover with the chain brake and throw it in the trash and fit the non-brake cover. One guy here who was a dealer at the time for McCulloch said he remembered taking cardboard boxes full of new chain-brake equipped sprocket covers and throwing them in the dumpster...

 

[belgian]

It was real common back then to take the cover with the chain brake and throw it in the trash and fit the non-brake cover. One guy here who was a dealer at the time for McCulloch said he remembered taking cardboard boxes full of new chain-brake equipped sprocket covers and throwing them in the dumpster...

That's what Mc Bob stated also. Loggers didn't like to fiddle with the brake and additional weight in them days and got rid of the brake assy instantly.

going by a local 1976 Mac price list, both the 105 and 125c came standard without chain brake. It was an option.

I run a 20" bar on mine and it's not easy to keep the chain from spinning at idle, so the brake is not bad from a safety point of view.

 

[belgian]

Below is a pic of my PM 650 clutch. The chain stops moving even when reved up in the cut. Can one of you with the expert eye tell me if it need replacing by this pic?

That clutch looks fine to me.
Most of such problems are caused by a worn sprocket in combination with a bad chain or bar, and too much chain tension. Does the chain move freely on the bar if you move it by hand (at engine stop), or does it run rough with hicks and noise. It should run very smoothly.

 

[belgian]

yep

theyr for democrats though...

maybe you could explain a little bit more ...:monkey:

 

[alpinecrick]

Maybe a later C came with a brake but this ad does not show one.

The saw in this pic was bought new around 77 and has the mount hole for a brake but never had one installed. Maybe it was an option..

Well, there you go--no standard brake on that 125C.

The retired Mac dealer in my hometown said he thought they all came with brakes by 1977--it was a liability issue by that time. He also mentioned that he sold a lot of regular covers w/o the brake fittings on the big saws, but retro-fitted a lot of brake assemblies/covers on the late 60's/early 70's smaller saws that originally came without brakes.

this saw had been hidden in a closet and pulled out by a grandson and sold to me, Never had gas in it. I kept it for a while but was afraid to put gas in it and sold it..

You did what?!!!.....


Casey

 

[briantutt]

That clutch looks fine to me.
Most of such problems are caused by a worn sprocket in combination with a bad chain or bar, and too much chain tension. Does the chain move freely on the bar if you move it by hand (at engine stop), or does it run rough with hicks and noise. It should run very smoothly.

The bar is basically in bad condition, the groove for the chain is over sized and all along the top and bottom there are small chunks missing a rough spots. The rim on the sprocket is also pretty worn. So I am guessing a new rim/sprocket and bar may be in order. It makes sense to me that too much friction would make the clutch slip...

Is a PM650 really an Oregon D176 mount? The McCulloch bar on it has Oregon style numbering on it...

 

[injun joe]

i got a picture of my little collection
http://i26.photobucket.com/albums/c129/3fymj4n/HPNX0681.jpg
http://i26.photobucket.com/albums/c129/3fymj4n/HPNX0678.jpg

 

[leeha]

Nice collection you got.
Love the 2 man saw with
the nice long bar.



Lee

 

[Tzed250]

.


I think these pics fit in here:

See it run here...



.

 

[briantutt]

Nice collection you got.
Love the 2 man saw with
the nice long bar.



Lee

Looks a bit scary to me...

 

[briantutt]

The bar is basically in bad condition, the groove for the chain is over sized and all along the top and bottom there are small chunks missing a rough spots. The rim on the sprocket is also pretty worn. So I am guessing a new rim/sprocket and bar may be in order. It makes sense to me that too much friction would make the clutch slip...ummmmm and a safety chain on it

Is a PM650 really an Oregon D176 mount? The McCulloch bar on it has Oregon style numbering on it...

This got instantly buried...(in nice bowsaw pics) but I still need answers/opinions.

 

[briantutt]

Ummmm, Redwood Special? That's hilarious

 

[sawbones]

Ummmm, Redwood Special? That's hilarious

dont let the looks of that little bar decieve you. A few tabs of the blue pill in the tank and its ready for action.

plus, it was cold out that day

 

[Metals406]

dont let the looks of that little bar decieve you. A few tabs of the blue pill in the tank and its ready for action.

plus, it was cold out that day

Worthy of a new Nova!

 

[stinkbait]

I got this 5-10 from Drew Crane several months ago, had it stripped down and all cleaned up for a while but due to stupidity I broke one of the rings. I had Bob Johnson bring two sets when he delivered the 660's two weeks ago, still stupid and broke another set. Finally, with the last new set I realized the piston has pins to keep the rings from moving (none of the bigger McCullochs I've worked on had them), went together nicely after that!

Unfortunately, someone ran this one with the clutch a little bit loose and the crankshaft and key way are not too sharp. As a result, I don't think it will be wise to run this one too hard in the wood. Too bad because it really has good compression and a nice bark.

This one originally had a McCulloch flat back carburetor but has been converted to the SDC. Really nice little block that someone made, perhaps I will be inspired enough to make a couple more for some other saws in need of a transplant.

Maybe next week I can get a family photo of all the 10 Series saws in a group. Not all are finished and running at this point but the collection is coming along pretty well.

Mark

Where did you find that 10 series full-rap handle? Do you want to sell it?

 

[heimannm]

Stinkbait - The 5-10 came with the full wrap, one of the things that convinced me it was a 5-10 as there are no other markings or I.D. on the saw; that and the fact that it is 70 cc's. Unfortunately that handle is broken under the plastic right near the vertical support. Works well enough to start and make a demo cut, I wouldn't run it hard in the woods that way, but the condition of the crankshaft already limits the use anyway.

I made a tracing of it and took it around to a number of locals to see if anyone could form a new one (1/2" EMT is just about the right diameter) but no luck so far.

Have you ever heard that expression "the check's in the mail"? Just curious...

Mark

 

[stinkbait]

Have you ever heard that expression "the check's in the mail"? Just curious...

Mark

I am not sure, but I guess it means no to the sale. I sure would love to run across one of those full wraps though. That is the first and only one that I have ever seen. It would look good on my 7-10A or 700.