McCulloch Chain Saws

[MEATSAW]

I just purchased two McCullochs: a 7-10, and a PM700 from members here. Hopefully they will get delivered asap! I think I am going to keep one and sell the other to my cutting buddy (who is chainsaw-less). I guess that depends on what CAD says when I get them.

So what say you? 7-10 or PM700?

Oh and I will get pictures up when I get them!

 

[heimannm]

Tom - the 250 is 80 cc, the 300 is 87 cc. According to my IPL's neither one would have originally come with an automatic oiler though both the 250 and 300 were set up to receive it.

Meatsaw - I prefer my 7-10 over my PM700, the 7-10 is lighter, less bulky, and has more snot. The PM700 has better antivibration and a chain brake.

Mark

 

[a. palmer jr.]

Tom - the 250 is 80 cc, the 300 is 87 cc. According to my IPL's neither one would have originally come with an automatic oiler though both the 250 and 300 were set up to receive it.

Meatsaw - I prefer my 7-10 over my PM700, the 7-10 is lighter, less bulky, and has more snot. The PM700 has better antivibration and a chain brake.

Mark

I probably would also consider which one is in better condition, corrosion, missing or broken parts, etc.

 

[tomdcoker]

Tom - the 250 is 80 cc, the 300 is 87 cc. According to my IPL's neither one would have originally come with an automatic oiler though both the 250 and 300 were set up to receive it.

Meatsaw - I prefer my 7-10 over my PM700, the 7-10 is lighter, less bulky, and has more snot. The PM700 has better antivibration and a chain brake.

Mark

Thanks for the information and reply. Tom

 

[MEATSAW]

Meatsaw - I prefer my 7-10 over my PM700, the 7-10 is lighter, less bulky, and has more snot. The PM700 has better antivibration and a chain brake.

Mark

The 7-10 I got has a chain brake on it. It looks nearly identical to my Pro 10-10A except for the muffler. I don't hear much about them while there is ample reading on the PM700. Wonder why the difference in popularity. I am thinking of using a 20-24" bar.

I think the PM700 is electronic ignition, and the 7-10 is points...not sure if that matters.

 

[bob15]

I just purchased two McCullochs: a 7-10, and a PM700 from members here. Hopefully they will get delivered asap! I think I am going to keep one and sell the other to my cutting buddy (who is chainsaw-less). I guess that depends on what CAD says when I get them.

So what say you? 7-10 or PM700?

Oh and I will get pictures up when I get them!

For me, without seeing either saw, I would take the PM700. I had both at one time and sold the 7-10A. Maybe its because I bought the PM700 brand new, but I prefer the electronic ignition (though you could put a Nova II in it). Because the PM700 is newer, it probably has less hours on it as well. Both my 700 and 7-10 had chain brakes

Mark, I really didn't feel much difference in the vibrations....neither is an AV saw. Did you have extra rubber on the handle bar?

bob

 

[heimannm]

My PM700 has the thick foam grip, I feel a lot less vibration on that saw.

My 7-10 has the short clutch cover and no brake, I may be deceived but it certainly feels a lot lighter.

In a head to head cut, the 7-10 will clearly be faster than the PM700. We confirmed this a couple of years ago at the IA Fall GTG when I ran it against a very nice, little used PM700 in the hands of a real pro - the 7-10 was even a clear winner in that case.

Mark

 

[tomdcoker]

Tom - the 250 is 80 cc, the 300 is 87 cc. According to my IPL's neither one would have originally come with an automatic oiler though both the 250 and 300 were set up to receive it.

Meatsaw - I prefer my 7-10 over my PM700, the 7-10 is lighter, less bulky, and has more snot. The PM700 has better antivibration and a chain brake.

Mark

I got my information from Chain Saw Collectors Corner and it listed the 300 as 87cc with an automatic oiler. I have not had a chance to check out the saws. Tom

 

[RandyMac]

A quick peek in the fuel tank will tell if the auto oiler is there, no mistaking that huge unit taking up space.
I have a later 250 that has the auto oil.

 

[tomdcoker]

A quick peek in the fuel tank will tell if the auto oiler is there, no mistaking that huge unit taking up space.
I have a later 250 that has the auto oil.

Thanks for that information. I will check out both saws. Tom Ps I also picked up a PP 525 today that is suppose to be a runner, but looking at it I think it will need some work.

 

[tomdcoker]

Thanks for that information. I will check out both saws. Tom Ps I also picked up a PP 525 today that is suppose to be a runner, but looking at it I think it will need some work.

I checked on both saws and no sign of an oiler in either tank. Tom

 

[Modifiedmark]

A 7-10 WTF?

Hey Mac guys, I picked up a 7-10 yesterday and have a question. This carb box is drilled for 2 sets of carb adjusting screws? Never seen this. Wonder if the tank halves have been mixed and matched? The bottom ones have been plugged with some type of nylon rivets?

Mark H has always been high on his 7-10 so I picked this one up to see for myself. It was a ebay deal and the seller was only 4 miles from my house so the $37 bid got it with no shipping involved. The auction showed only about 90lbs compression but he said it started and run good so I went ahead and picked it up.

I asked him how many times he pulled it over and he said two or three times. :msp_smile: I got it home and rechecked it and it was blowing almost 160lbs. It runs alright but not good, carb aint adjusting well at all and probably needs a kit. I'll get it up and running soon and see how much snot its got.

Got the recoil off as it had a couple screws broken off in it, what a PITA drilling those out. As you can see I got one done with one more to go. I see Acres list these as 15.6lbs, I dont think there that heavy though.

What do you guys think of this double carb screw setup?

 

[8433jeff]

A 7-10 WTF?

Hey Mac guys, I picked up a 7-10 yesterday and have a question. This carb box is drilled for 2 sets of carb adjusting screws? Never seen this. Wonder if the tank halves have been mixed and matched? The bottom ones have been plugged with some type of nylon rivets?

Mark H has always been high on his 7-10 so I picked this one up to see for myself. It was a ebay deal and the seller was only 4 miles from my house so the $37 bid got it with no shipping involved. The auction showed only about 90lbs compression but he said it started and run good so I went ahead and picked it up.

I asked him how many times he pulled it over and he said two or three times. :msp_smile: I got it home and rechecked it and it was blowing almost 160lbs. It runs alright but not good, carb aint adjusting well at all and probably needs a kit. I'll get it up and running soon and see how much snot its got.

Got the recoil off as it had a couple screws broken off in it, what a PITA drilling those out. As you can see I got one done with one more to go. I see Acres list these as 15.6lbs, I dont think there that heavy though.

What do you guys think of this double carb screw setup?

Could have been the factory answer to leftover stock. You've seen that before in lime green. I could be wrong or right on both counts. Its a nice score either way.

 

[homelitejim]

Some of the X10 mcculloch saws had fully adjustable sdc carbs.

 

[Modifiedmark]

Some of the X10 mcculloch saws had fully adjustable sdc carbs.

This one does as well but only needs one set of holes in the carb box for them, not two. . :msp_biggrin:

 

[cpr]

I got nothin', Mark. The bullfrog-equipped ones didn't have holes like that. You adjusted them with the filter and cover off if I remember right?

 

[homelitejim]

This one does as well but only needs one set of holes in the carb box for them, not two. . :msp_biggrin:

My SP 81 only has the idle adjustment that goes to the side, and most 10-10s don't have any adjustment holes at all, so that is the first time I have seen that set up, but could still be stock to the saw.

 

[homelitejim]

This one does as well but only needs one set of holes in the carb box for them, not two. . :msp_biggrin:

That's McCulloch for you, very nice saw by the way.

 

[mactodd]

A 7-10 WTF?

Hey Mac guys, I picked up a 7-10 yesterday and have a question. This carb box is drilled for 2 sets of carb adjusting screws? Never seen this. Wonder if the tank halves have been mixed and matched? The bottom ones have been plugged with some type of nylon rivets?

Mark H has always been high on his 7-10 so I picked this one up to see for myself. It was a ebay deal and the seller was only 4 miles from my house so the $37 bid got it with no shipping involved. The auction showed only about 90lbs compression but he said it started and run good so I went ahead and picked it up.

I asked him how many times he pulled it over and he said two or three times. :msp_smile: I got it home and rechecked it and it was blowing almost 160lbs. It runs alright but not good, carb aint adjusting well at all and probably needs a kit. I'll get it up and running soon and see how much snot its got.

Got the recoil off as it had a couple screws broken off in it, what a PITA drilling those out. As you can see I got one done with one more to go. I see Acres list these as 15.6lbs, I dont think there that heavy though.

What do you guys think of this double carb screw setup?

Well, I'll try to return the favor, since you have been a fountain of knowledge on the Poulans I've had questions on!

First, the block/oil tank being bare means it's probably a replacement block. The gas tank top and filter cover are correct for the 7-10. The handle and tank bottom could be a replacement that Mac made available to convert from the Mac "bullfrog" carbs to the Walbro cube style. The plastic rivets were included in the kit to seal off the holes. These holes are for the early styled tops with Walbros. The needle adjustments had extensions that went from the needles to the adjuster screws, kinda like a u-joint arrangement.
Most, if not all the 70cc Mac 10's had a third attachment screw that held the lower strap to the cylinder in addition to the oval head screw at the handle, and a panhead screw with an external star lock washer at the forward end. I see this appears to have the 2 screw version. May be a replacement.
The red headed comp release could have come with the replacement block. But, a comp release is not unique to the 70cc; the 10-10S came standard with one, and the replacement 54cc block I have also has it. In the later years, I beleive it was standard on the Pro Mac 10-10.
Hopefully this is a 70cc saw, but because of all the evidence that half of this saw has been replaced, there are no guarantees.
The 15lb figure would be correct if it had the chain brake and extended muffler cover, but because this has a cowbell muffler cover, it did not come with the extended clutch cover. Again, the muffler cover is easily changed.
You got a mutt, but just like with real dogs, mutts often are the best pets!

 

[mactodd]

Also, the cowbell muffler cover came in 2 styles. The reed valve like you have, and a louvered inner with the cowbell outer. The reed style is the best, IMO.