McCulloch Chain Saws

[boda65]

Well i had a big box turn up today.[/IMG]

H'mm no decomp,(woulda thought these big saws would have had one) OK, choke out, throttle locked give 4 pulls and she coughed, choke in a bit give it a pull it roared into live with a puff of blue smoke....very good.

Had a quick play with carby settings, as it came its pretty good.
Stopped and started it about 10 times over 1/2 hour and it started first pull every time...I'm liking that.

That 850 super looks identical to a PM800. As with yours, the 800 has no decomp. Mark H. has a service bullitin that addresses this. They redesigned the intake port with a little hump in it that did away with the need for decomp. Sounds like you have a good one.

 

[heimannm]

A few shared photo's from over in the Iowa Spring GTG thread.

A trio of big McCulloch's

Struggle putting his 660 gear drive in a log - note the left handed operation for the benefit of the camera

Wendell and the 1-50

Mo. Jim bought a nice PM800 with a 34" PM roller nose bar

Mark

 

[dieselsmoke]

Good looking 790 you got dieselsmoke,
There a great saw with lots of grunt.




Lee

Thanks Lee, So, what did you say you are working on? On your bench?:msp_confused:

 

[Dennis Gauge]

there is a mac 3216 w/ a 16" bar that runs good in my dads area for $50 does anybody know if it is a worthy mac or is it a bad plastic saw after the real mac era? i am looking at acres site now but do not see any info and was wondering if anyone knows anything about them mi was thinking it might be a good light limbing saw.

It's plastic throwaway... Probably didn't cost much more than $50 new. I would pass on it if it were me.

 

[1375619cm3]

It's plastic throwaway... Probably didn't cost much more than $50 new. I would pass on it if it were me.

I did as suggested, i passed

 

[8433jeff]

Well i had a big box turn up today.
Can any one tell me what the the sti#l numbers are on the drivers?.
The 700 has 3/8's chain with #5
The 850 has 3/8's chain with #3.


Sh#t looking at the pics i need to find the camera and stop using the cellphone.Sorry.

Stihl chain has the driver width stamped on the driver, 3 is .050/1.3mm; 5 is .058/1.5mm, 6 is .063/1.6mm.
Oregon in 3/8 is 72, 73, and 75, respectfully, and Carlton is A1,A2, and A3, IIRC.

Pictures are fine from here.

 

[rwoods]

Guys, thanks for all the pictures. I enjoyed them all.

Nallac, here are some photos contrasting the old series 850 with the new. Left is the old. Right is the new. There are other small changes not shown which I can outline later if you're interested. The individual shots are the new series. Note the exhaust has a ramp that extends up the inner cylinder wall. Also note that the intake has been modified with a small slot.

Some of the newer series came with a DSP valve which was mounted in the muffler strap bolt hole. There will be a small hole in the center of the bolt hole if yours was once equipped.

You should really enjoy your saws.

Ron

 

[RandyMac]

The PM800 I have does have a sissy valve. I recently picked up another PM800ish motor, it is decomped as well. I'll check for the high port, it could be awhile though, getting ready to reassemble the 850.

 

[nallac]

Thanks for the info Mark, 8433jeff and Ron.
I'd love to hear any more info you have about the changes between the saws Ron,Can never learn too much.

I'm liking the pics of all the other Macs you guys are Posting.

I really need to find some wood to burn up with the 850.

Another question?. What would be the best length bar to run on it ,cutting mainly pine(or should that be what size bar is the max it can run?).

Also I'm still waiting for the SP60 to turn up,hopefully today.....

I've been searching the Local Auction site here in NZ trying to find more old Mac's but no luck. I missed out on the Blue painted Mac the listing was withdrawn.

 

[promac850]

Thanks for the info Mark, 8433jeff and Ron.
I'd love to hear any more info you have about the changes between the saws Ron,Can never learn too much.

I'm liking the pics of all the other Macs you guys are Posting.

I really need to find some wood to burn up with the 850.

Another question?. What would be the best length bar to run on it ,cutting mainly pine(or should that be what size bar is the max it can run?).

Also I'm still waiting for the SP60 to turn up,hopefully today.....

I've been searching the Local Auction site here in NZ trying to find more old Mac's but no luck. I missed out on the Blue painted Mac the listing was withdrawn.

Max on the 850 in hardwood with a 7 pin rim, full comp chain would be around 28" In pine, you probably could get away with another inch or two.

IIRC, RandyMac might've ran something like a 30"? bar with skip chain and a 7 pin rim. Kind of shooting in the dark with my memory sometimes.

 

[RandyMac]

Max on the 850 in hardwood with a 7 pin rim, full comp chain would be around 28" In pine, you probably could get away with another inch or two.

IIRC, RandyMac might've ran something like a 30"? bar with skip chain and a 7 pin rim. Kind of shooting in the dark with my memory sometimes.

36" full comp, 7 pin. I used an 8 pin in Pine and second growth Redwood.

 

[promac850]

36" full comp, 7 pin. I used an 8 pin in Pine and second growth Redwood.

Well, that answers that guy's question.

There ya go, RandyMac gave the green light for 36" bar with an 8 pin rim for pine on an 850 Super.

 

[RandyMac]

Keep in mind the chain, it will have to be properly sharp, with a balance between racker height, bit angles and depth of "hook".
To use an 8 pin otherwise would be a wasted effort.

This 850 is spinning an 8 pin with a 36". To get everything I could out of this saw, everything on it was tip top and finely tuned, including the chain. One of the best lessons in sawing is to tailor the chain to the saw and the wood. The standard grind is a general all purpose compromise.

 

[8433jeff]

Keep in mind the chain, it will have to be properly sharp, with a balance between racker height, bit angles and depth of "hook".
To use an 8 pin otherwise would be a wasted effort.

This 850 is spinning an 8 pin with a 36". To get everything I could out of this saw, everything on it was tip top and finely tuned, including the chain. One of the best lessons in sawing is to tailor the chain to the saw and the wood. The standard grind is a general all purpose compromise.

Plus one there, MacMan.

Thats a nice picture, give much thought to whether you would do it the same way today?

 

[heimannm]

Here is a service bulletin that talks about the PM800. I will try to dig around to see if I can find anything further.

Mark

 

[heimannm]

Let me try again...

Mark

 

[RandyMac]

Plus one there, MacMan.

Thats a nice picture, give much thought to whether you would do it the same way today?

Most likely, I got to do and see things most people couldn't imagine, not just in the woods either. I lived a barbarian's life back then, such behavior has it's risks and rewards. Only recommended for 20 somethings, the wear starts to show in your 30s.:hmm3grin2orange:

 

[RandyMac]

Thank you Mark.

 

[Brian13]

cpr, dieselsmoke, very nice saws!!! All of them look real clean, and the roller nose bars really set them off. And cpr, you can send some of that rain down my way, getting ready to plant some grass and its dry as a bone down here.

Most likely, I got to do and see things most people couldn't imagine, not just in the woods either. I lived a barbarian's life back then, such behavior has it's risks and rewards. Only recommended for 20 somethings, the wear starts to show in your 30s.:hmm3grin2orange:

Agreed.

 

[cpr]

cpr, dieselsmoke, very nice saws!!! All of them look real clean, and the roller nose bars really set them off. And cpr, you can send some of that rain down my way, getting ready to plant some grass and its dry as a bone down here.



Agreed.

It's all yours, brother and +1...