McCulloch Chain Saws

[struggle]

I will try and get you guys back on track:msp_rolleyes:

I put the SP125 back together tonight sort of. I put new oil system related gasket back on the saw. Crap the manual oiler no workie:msp_angry: so I loosen the tank and push the rod in and it seem to be working then snug the tank back down and it worked and pumped oil. Then I get the rest of the saw all back together less the bar and I go to push the manual oiler and it is not pushing in again:msp_unsure:

Well I need to replace the fuel tank and such so I am leaving it for now as the tank is full of oil and primary concern is to see if the saw will run....tomorrow as it was to late to try and start it tonight.

I did put a compression tester on it and while it did hydro lock on bar oil I have drained the block weeks ago and with the decompression valve pushed it pulled 120 and I pulled the decompression valve to close and it pulled to 150 on the second pull and I was having trouble keeping the saw in place so I stopped. I am pretty sure it was going higher.

So what do these saws in good condition pull for compression? I am also concerned about possibly breaking the recoil to so that was another reason for not pulling anymore on it as I do not know how well they hold up.

 

[promac850]

I will try and get you guys back on track:msp_rolleyes:

I put the SP125 back together tonight sort of. I put new oil system related gasket back on the saw. Crap the manual oiler no workie:msp_angry: so I loosen the tank and push the rod in and it seem to be working then snug the tank back down and it worked and pumped oil. Then I get the rest of the saw all back together less the bar and I go to push the manual oiler and it is not pushing in again:msp_unsure:

Well I need to replace the fuel tank and such so I am leaving it for now as the tank is full of oil and primary concern is to see if the saw will run....tomorrow as it was to late to try and start it tonight.

I did put a compression tester on it and while it did hydro lock on bar oil I have drained the block weeks ago and with the decompression valve pushed it pulled 120 and I pulled the decompression valve to close and it pulled to 150 on the second pull and I was having trouble keeping the saw in place so I stopped. I am pretty sure it was going higher.

So what do these saws in good condition pull for compression? I am also concerned about possibly breaking the recoil to so that was another reason for not pulling anymore on it as I do not know how well they hold up.

Well, I can tell you that my 850 pulled 135 psi with the rings not broken in yet... I am sure it's much higher now, probably somewhere around 165 or more. Will do a test tomorrow and post the results.

 

[promac850]

If you can't control that beast, maybe you can handle the push mower from now on.
Need operators, not drivers.

Har har...

I made that up ya know...

Here's your cigar... oh, and a can of PBR...

 

[heimannm]

Both of my SP125's are around 150-155 PSI. I think the starters are pretty durable themselves so you won't risk damaging anything as long as you make sure the starter pawls are engaged before cranking. Point is, don't jerk the starter, engage the pawls then pull with authority.

Mark

 

[nallac]

I had another big box turn up today..

Parts first,
Two of the crankcases are 700's,i think?.
The one thats apart is definately a 700..
need to strip the other(right one in pic) to check it, it does have a split exhaust port?.Other than that it looks identical to my other parts 700.

I did strip one down(Natural coloured one,left one in pic), its piston is a lot smaller than the 700,it also has a split port exhaust.
i did measure the two striped pistons but didn't write it down,will do that in the morning.

PM850Super #2,bought as a non runner with scored piston.
Overall outside condition is excellant.Doesn't look to have had much hard/rough use.Thats until i checked the air box.....shaking head again.......
Had a quick look down the exhaust and the plug hole,
piston doesn't look good,bore is so-so...needs stripping down.
I hope the pistons saveable,rings are easy to find pistons not so much.

View attachment 183811View attachment 183812View attachment 183813View attachment 183814View attachment 183815

 

[stinkbait]

So what do these saws in good condition pull for compression?

Mine pulls 185 cold.

Igpoe actually broke a recoil on his 125 when he first got it.

 

[stinkbait]

I did strip one down(Natural coloured one,left one in pic), its piston is a lot smaller than the 700,it also has a split port exhaust.
i did measure the two striped pistons but didn't write it down,will do that in the morning.

The only 10 series saw that I have with a bridged exhaust is my 10-10S.

 

[nallac]

The only 10 series saw that I have with a bridged exhaust is my 10-10S.

Thanks for that info, gives me something to base it off.
Care Of Acres, 3.3 cu. in. (54c)CYLINDER BORE:1.750 in.PISTON STROKE:1.375 in.

Will strip the last one tomorrow and measure them all up.

The piston and bore on the smaller one look pretty good,it does need rings.
H'mm i needed a 50cc saw,got the 60,70,80cc's covered.(well only a couple of each)
Make up a hybrid PM700 shelled 50cc?....

 

[yooper]

I have a question for you Mac dudes...My FIL has a 850 and the molded fuel line is shot. I want to make sure I am ordering him the right one. are these the proper # for that line? 215708 or 301011

 

[promac850]

I have a question for you Mac dudes...My FIL has a 850 and the molded fuel line is shot. I want to make sure I am ordering him the right one. are these the proper # for that line? 215708 or 301011

Same part... McCulloch liked to play with part #'s...

I used this one... from lees24

McCulloch Fuel Line 215708 301011 64848 | eBay

Beware, if you put one of those monster creamsickle fuel filters on the end of this line, it will crack, as the hole is tiny on the fuel line. Use a short piece of 1/4" fuel line, pop it onto the filter, and stick the end of the 850 fuel line in. I did that with the cracked fuel line I have and it's a permanent fix. Works great.

Also, be sure to wrap teflon tape around the fuel line where it goes into the hole in the 'firewall'... make sure the fit is nice and snug. Otherwise you'll see fuel leaking into the airbox.

Hope this helps.

 

[yooper]

Same part... McCulloch liked to play with part #'s...

I used this one... from lees24

McCulloch Fuel Line 215708 301011 64848 | eBay

Beware, if you put one of those monster creamsickle fuel filters on the end of this line, it will crack, as the hole is tiny on the fuel line. Use a short piece of 1/4" fuel line, pop it onto the filter, and stick the end of the 850 fuel line in. I did that with the cracked fuel line I have and it's a permanent fix. Works great.

Also, be sure to wrap teflon tape around the fuel line where it goes into the hole in the 'firewall'... make sure the fit is nice and snug. Otherwise you'll see fuel leaking into the airbox.

Hope this helps.

so this is the same one eh McCULLOCH PRO MAC 850, MOLDED FUEL LINE 215708,301011 | eBay

I wont be fixing it he will.

 

[struggle]

I would like to submit my application for the big cube club RANDYMAC:msp_w00t:[video=youtube;33Ol5AIflmE]http://www.youtube.com/watch?v=33Ol5AIflmE[/video]

 

[promac850]

so this is the same one eh McCULLOCH PRO MAC 850, MOLDED FUEL LINE 215708,301011 | eBay

I wont be fixing it he will.

Yep, there are several sellers offering the fuel line... part number searches yield more results compared to a search of 'mcculloch 850 fuel line'...

some of the lines offered by some of the sellers are better than others, all I know is that the one I got is pretty good. Just can't put a filter with a massive 1/4" barb fitting on it, and expect it to not crack... so that's where the piece of fuel line for a lawn mower comes in...

Hope he gets that beast running!! They sound great.

 

[promac850]

That's a nice 125 you got there struggle.

 

[Warped5]

That's a nice 125 you got there struggle.

Yah, quite nice. Nearly as nice as your new avatar, ProMac .... :hmm3grin2orange:

 

[Steve NW WI]

I would like to submit my application for the big cube club RANDYMAC:msp_w00t:

Mucho cool! How'd ya find that before Mark got his hands on it? I didn't think there were any Macs left in the wild in Iowa

On a semi related note, I'll get that Homelite spike in the mail today. Kinda slipped my mind this week, been overly busy here for some reason.

 

[dieselsmoke]

I would like to submit my application for the big cube club RANDYMAC:msp_w00t


Very nice, Ya gotta love the sound of the big Macs at idle. It picks up RPM's well too. It's a keeper.

 

[struggle]

Mucho cool! How'd ya find that before Mark got his hands on it? I didn't think there were any Macs left in the wild in Iowa

On a semi related note, I'll get that Homelite spike in the mail today. Kinda slipped my mind this week, been overly busy here for some reason.

I saw it on an auction bill in my area and I got it that way. Unfortunate there was another guy there that knew what it was as well and a bidding was took place and I went a lot higher than wanted but it seems worth it now

 

[cbfarmall]

Yep, there are several sellers offering the fuel line... part number searches yield more results compared to a search of 'mcculloch 850 fuel line'...

some of the lines offered by some of the sellers are better than others, all I know is that the one I got is pretty good. Just can't put a filter with a massive 1/4" barb fitting on it, and expect it to not crack... so that's where the piece of fuel line for a lawn mower comes in...

Hope he gets that beast running!! They sound great.

Why don't you use the right sized filter. The Husky style are very good for the older saws. Stihl filters are goofy.

Chris B.

 

[promac850]

Why don't you use the right sized filter. The Husky style are very good for the older saws. Stihl filters are goofy.

Chris B.

Cause the nearest husky dealer is farther away than the creamsickle dealer, and also, they still have to get an inventory going and such, as they just started selling Husky saws a couple of months ago...

So, to make a long story short, they (Husky dealer) don't got no filters yet, and I don't want to drive that far for a filter.

Comprende? Here's your cigar too...