McCulloch Chain Saws

[rarefish383]

One thing, you could put a lot of 100CC saws with 36" bars in the trunk.

 

[Maintenance supervisor]

One thing, you could put a lot of 100CC saws with 36" bars in the trunk.

Yup, thats what I was thinking!

 

[mogulmasher]

The 80cc "yellow top" Super 250 never had an oil pump as far as I know. The one I had was a MAC Canada model. Manual oiler only.

Your 250 is likely one of the versions that did come with a pump.

I'm attaching a multi saw IPL that shows the late 250's with an oil pump.

Look at panel A13 and you can see parts 22 & 23 for the pulse pump. Go to the next panel A14.

Look at the saw models at the top identified as A, B, C etc. The two later 250's are F & G which used those auto oiler parts.
The only saw in the group that had an auto oiler were the late 250 and 300 models.

There was a 380A that I am told was only sold in Europe.

Thanks for all the info! I figured I just had a late 250. Was just curious what differences 80cc yellow top super had.

 

[2broke2ride]

Thanks to @mogulmasher I added another Mac to the collection today. 1-50. Got it home, put a kit in the carb (metering diaphragm was rock hard) and it runs very well. Need to get a bar and chain on it and final tune in some wood.

 

[fossil]

Thanks for all the info! I figured I just had a late 250. Was just curious what differences 80cc yellow top super had.

My yellow top had an HL carb. Other than that I have no idea. It's residing in a museum somewhere in Iowa.

 

[mogulmasher]

Ya my 250 has a HL carb too.

 

[vinnywv]

What do you all think about the sp70? Theres not much talk about that model. Lots of 7-10 and pm700 comparison but very little mention of the sp70. Reason im asking is there just happens to be one headed to wv this week!! Ive got a pm700 that is in fantastic shape and runs great. Ive got a 6-10 that is surprising to operate. Light and strong. Ive got a 7-10 as well thats just plain mean and recently took a 10-10 and replaced its engine with a 7-10 engine i got from the bay. That was a great project and its one heck of a runner (still has points too). They do run noticeably different than my pm700, But theres not much mention of any sp70's out there? Anyone have any experience with one? If so how do they compare to the 700 and 7-10 or any other 70cc for that matter? When i get the sp70 ill find out im sure but i was just sitting at work and thinking about it.......at 130 in the morning. What else is there to think on i guess?

 

[Jethro 2t sniffer]

What do you all think about the sp70? Theres not much talk about that model. Lots of 7-10 and pm700 comparison but very little mention of the sp70. Reason im asking is there just happens to be one headed to wv this week!! Ive got a pm700 that is in fantastic shape and runs great. Ive got a 6-10 that is surprising to operate. Light and strong. Ive got a 7-10 as well thats just plain mean and recently took a 10-10 and replaced its engine with a 7-10 engine i got from the bay. That was a great project and its one heck of a runner (still has points too). They do run noticeably different than my pm700, But theres not much mention of any sp70's out there? Anyone have any experience with one? If so how do they compare to the 700 and 7-10 or any other 70cc for that matter? When i get the sp70 ill find out im sure but i was just sitting at work and thinking about it.......at 130 in the morning. What else is there to think on i guess?

Awesome Vinny. You will be able to let us know how it goes. Getting a dam fine stable of yellow now eh.

 

[mogulmasher]

I wonder too. I have a cp70 in pieces that I curious about as well. I'm guessing it's similar to the sp. Hoping to get around to getting it together this spring.

 

[heimannm]

Sorry guys, I was down hard with the flu all last week and just trying to pick up the pieces now. I won't try to catch everything at once, but regarding the 10 Series seals there were two approaches, one was a seal with a larger O.D. that matched the O.D. of the bearing and the bearing itself was relatively narrow, bearing and seal were side by side. The other was a smaller O.D. seal that fit inside the extra wide outer race of the bearing. I would not trust the part numbers written on the seals I have as they could have been wrong so I just match the right seal the right bearing. I will try to remember and get some photos and measurements when I am back in the other shop.

I use some white lithium on the starter shaft whether it is the nylon bushings or the brass sleeve like the older saws, generally I don't put anything on the springs.

There were two different styles of boots used on the 10 Series anti-vibe saws but they are interchangeable. Seems to me that one had a slightly smaller I.D. but I cannot confirm that right now. I think any SP or CP 70 in good condition is a fine saw. The front/lower anti-vibe mounts on the CP saws were not as rugged as the later SP models. The anti-vibe system is good, and nice to have if you are running the saw through more than one tank of fuel.

CP lower/front mount



Bottom of an SP, that lower frame attaches to the saw through a donut with a clamp making a pretty secure mount





Mark

 

[2broke2ride]

Thanks to @mogulmasher I added another Mac to the collection today. 1-50. Got it home, put a kit in the carb (metering diaphragm was rock hard) and it runs very well. Need to get a bar and chain on it and final tune in some wood.

I went out to the garage tonight after work. The saw fired up in 2 pulls so I thought, ok, i have a little twilight left, let's see if it cuts.
So i threw a bar and chain on and made a couple test cuts. This saw surprised me pretty well actually. All of my other large frame Macs are 87cc but I couldnt even notice the 7cc deficit in this saw. Very happy so far. I will.mess with it more over the weekend when I have some daylight.

 

[mogulmasher]

Nice 2broke! Glad to hear it goes good.

 

[2broke2ride]

Nice 2broke! Glad to hear it goes good.

I still have the chain soaking. It soaked in vinegar for 24 hours and is a little better. Hopefully another 24 hours will do it. I hate to give up on it, it appears to have never been filed and it is full chisel Oregon chain.

 

[vinnywv]

Sorry guys, I was down hard with the flu all last week and just trying to pick up the pieces now. I won't try to catch everything at once, but regarding the 10 Series seals there were two approaches, one was a seal with a larger O.D. that matched the O.D. of the bearing and the bearing itself was relatively narrow, bearing and seal were side by side. The other was a smaller O.D. seal that fit inside the extra wide outer race of the bearing. I would not trust the part numbers written on the seals I have as they could have been wrong so I just match the right seal the right bearing. I will try to remember and get some photos and measurements when I am back in the other shop.

I use some white lithium on the starter shaft whether it is the nylon bushings or the brass sleeve like the older saws, generally I don't put anything on the springs.

There were two different styles of boots used on the 10 Series anti-vibe saws but they are interchangeable. Seems to me that one had a slightly smaller I.D. but I cannot confirm that right now. I think any SP or CP 70 in good condition is a fine saw. The front/lower anti-vibe mounts on the CP saws were not as rugged as the later SP models. The anti-vibe system is good, and nice to have if you are running the saw through more than one tank of fuel.

CP lower/front mount

View attachment 794808

Bottom of an SP, that lower frame attaches to the saw through a donut with a clamp making a pretty secure mount

View attachment 794812

View attachment 794811

Mark

Thanks for the pictures mark. I hope you make a speedy recovery.

 

[kbeck]

Working on the 7-10 this morning and had to make an impromptu ring compressor lol. Got the rings in the proper orientation, wrapped the aluminum around then some tape and bam! Slid right in
View attachment 794545

the cylinder and rotating assembly for my other 7-10 showed up friday and I wasn’t too happy. fin around the decomp valve was broke and the piston crown all dinged up. Contacted the seller and they are shipping a complete starter assembly and clutch assembly to make things right. Good news is the cylinder bore is in impeccable condition. Very happy with that.

View attachment 794547 View attachment 794546
so today will involve getting the 7-10 together and the bench cleaned off for the running/oiling/cutting Poulan 5200 I’m picking up tomorrow.

Nice work on the 7-10 doing the same with my PM 60 good score on the 5200 also got some Poulans myself
largest one is a 4000

 

[2broke2ride]

I just put an offer on this. I'm thinking it is a 6-10. I spy the decomp operated by the on off switch. We shall see. Seller has a ton of Macs listed apparently from an estate sale. Doesnt seem like they know much about saws.
https://www.ebay.com/itm/401988740896

 

[Jethro 2t sniffer]

I just put an offer on this. I'm thinking it is a 6-10. I spy the decomp operated by the on off switch. We shall see. Seller has a ton of Macs listed apparently from an estate sale. Doesnt seem like they know much about saws.
https://www.ebay.com/itm/401988740896

Man there is some real basket cases amongst that lot. What does a 3-10 dsp look like? I thought the 6-10 had the later round top flat filter?

 

[2broke2ride]

Man there is some real basket cases amongst that lot. What does a 3-10 dsp look like? I thought the 6-10 had the later round top flat filter?

I will admit, I dont know much about those early 10 series saws. I just know the decomp makes it 70cc lol.
I threw a pretty low offer on it so even if I get it for parts I feel I'm doing ok.
I've made runners out of much worse looking saws lol.

 

[Jethro 2t sniffer]

I will admit, I dont know much about those early 10 series saws. I just know the decomp makes it 70cc lol.
I threw a pretty low offer on it so even if I get it for parts I feel I'm doing ok.
I've made runners out of much worse looking saws lol.

There will be handy parts for sure.

There is a pm60 in that lot too.

54 57 60 and 70 had decomps too

 

[Maintenance supervisor]

I just put an offer on this. I'm thinking it is a 6-10. I spy the decomp operated by the on off switch. We shall see. Seller has a ton of Macs listed apparently from an estate sale. Doesnt seem like they know much about saws.
https://www.ebay.com/itm/401988740896

Definitely gonna need points. Usually when theres a hole in the flywheel cover water finds a path of least resistance, but replacing corroded points is fairly painless.
The prices of these saws look to be about inline with similar saws, not someone who knows very little about saws or hasn't done their research , aka no 10.00$ bow saws or wildly high value on a modern homelite.