The service bulletins are interesting reading, and make you wonder some times "what were they thinking" when they released some of the saws the way they did.
Lubri-Mac comes to mind...
Mark
Lubri-Mac comes to mind...
Mark
McCulloch Chain Saws
- Thread starter Bruce Hopf
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The new SP81 rings just arrived and will be a definite improvement going from a ring width of .075 with the old ones to .080 with the new ones. Gonna button it up (and leak check it one more time) and get this bad boy back together..., or at least try. With my luck I'll run across something else goofy -- besides the broken recoil spring and 12" starter rope..., LOL.
Make sure you let the Red Kote cure completely, I have been surprised once with a saw that bled red through the seam. Wouldn't hurt to run you hair dryer or heat gun in it for a few hours just in case you left a puddle somewhere.
Mark
Mark
It's been sitting under my garage heater for 4 days now and won't see fuel for awhile yet. There were a few drip areas that were a little thicker than everywhere else but they seem nice and dry now, too.
I must say I was expecting a little thicker coating than I ended up with, tho. I had the tank about a third of the way filled while slowly turning it over, around, etc. Was very thorough with that step. Let it drain back into the can until the drips started gelling and once again worked the tank around for several more minutes to even out what was left. Been sitting and drying since.
I'll try to shut up now and go work on this thing. 'Preciate all the help so far.
I'll try to shut up now and go work on this thing. 'Preciate all the help so far.
More log dragging today. Did make a few cuts with a PM800. Thirsty - 1st tank only made three cuts on the big end. No big deal in my shape today, but it would be a minor nuisance once I hit my stride later in the season. I'll just have to cut with an SP125C. Lots of fuel capacity. Ron
The little Deere that couldn't ...
Lifted the front end off the ground instead of the load.
So the PM800 reduced the load by one half.
The little Deere that couldn't ...
Lifted the front end off the ground instead of the load.
So the PM800 reduced the load by one half.
Mark what got me thinking is this, This covers 17 years. There are 1725 service bullitens. Do the math to see how many service bullitens were averaged per year. Staggering..
The McCulloch team did seem ready and willing to ship products out before they were thoroughly tested.
On the plus side, they did try to keep the dealers informed of problems and changes.
Mark
On the plus side, they did try to keep the dealers informed of problems and changes.
Mark
What did they do drop it off a truck and run over it several times? WOW!
On a good note
Some body's SP 125 is running very good.
Brian
On a good note
Some body's SP 125 is running very good.
Brian
Thanks, Brian. Only a few more to go.
To your question, the Postal Service destroyed the MAC spinner and breaker I had purchased.
Ron
To your question, the Postal Service destroyed the MAC spinner and breaker I had purchased.
Ron
WOW!! How do you break something like that? Run over it with a train?
Brian
Brian
Those MAC Spinners must be very hard to find? I have never seen one.
Mark
I still have a small pile of logs left over from a tree removal job last summer, they were kind enough to haul them to town and store them behind the lumberyard over the winter. I've been over to the pile a time or two just to test a saw but got more serious two weeks ago and cut, split, and hauled a trailer load home.
Two weeks ago I tried the Mac Cat (300 Series) I cleaned up and fixed up after Christmas, it was a real dog...since then I replaced the impulse line and the oiler line and it runs as it should now.
I also put the CP 80DX in a log, the saw runs fine but the chain I put on that bar was not very sharp so I only made a couple of cuts.
The reliable old PM55 with a relatively new cylinder and piston is still a favorite so I used that only until getting into some dirt (several of the logs were still frozen to the ground). The PM850 also proved to be a strong runner a joy to run, until it got into the frozen dirt as well.
Maybe I will remember to take the camera along next time out.
Mark
Two weeks ago I tried the Mac Cat (300 Series) I cleaned up and fixed up after Christmas, it was a real dog...since then I replaced the impulse line and the oiler line and it runs as it should now.
I also put the CP 80DX in a log, the saw runs fine but the chain I put on that bar was not very sharp so I only made a couple of cuts.
The reliable old PM55 with a relatively new cylinder and piston is still a favorite so I used that only until getting into some dirt (several of the logs were still frozen to the ground). The PM850 also proved to be a strong runner a joy to run, until it got into the frozen dirt as well.
Maybe I will remember to take the camera along next time out.
Mark
Hard to take pictures and work. Dirt took my PM800 out Saturday as well. Sharp chains seem to be drawn to dirt. My last cut didn't quite go all the way through so I split the end with a 20" barred off-brand but even with wedges stacked triple I couldn't break it free. Couldn't reach the uncut portion with the 20". Cutting, or should I say rubbing, the few inches left was sheer misery for the PM800. My choice though as I had a spare sharp loop in the truck but the thought of having to sharpen that many cutters just to finish a small cut which I thought I could just pop free kept me pressing on. Live and learn. Ron
Mark, that is a very nice looking spinner. I also have a PM55 that I like very well and use a lot, but use one of my Pro 10-10 and one of my PM6 for most of my cutting. They are a rock and will work hard all day without a problem. Now watch me jinks myself. One day I hope to find a Pro 10-10S to add to my collection. Keep an eye out all the time but the ones I have seen on ebay they are either junk or they want a war price for them.
Ron: I wished I could have came out and helped Saturday. I hope to be out there next Saturday to help.
Brian.
Ron: I wished I could have came out and helped Saturday. I hope to be out there next Saturday to help.
Brian.
The SP81 is beginning to resemble an SP81 again. Some interesting challenges putting it back together given the hardware that came off of it and the ton of spare parts and other hardware in a box that came with it. Spent a lot of time referring to the IPL's for fastener types and sizes and think I have most of that sorted out correctly. Got rid of the Nova chip and went back to points. Brand new set of points. Questionable condenser I recently swapped out of a 10-10 that was having spark issues. We'll see...
A couple of things wrong with this picture, not the least of which is no choke rod yet. Can't figure it out for the life of me unless the fixed jet rod simply doesn't fit the arrangement of the different SDC. The idle screw clearly doesn't..., nor is it necessary except to plug the hole to keep dust and dirt out of the air box. And tuning this rascal looks like it may be a little tricky, eh? Hmmm....
Two choke rods to choose from. The top one came with the fixed jet carb and doesn't even want to see the carb now on it. The bottom one doesn't quite fly either, but looks a bit more along the lines of what seems to be needed. As it stands, neither one fits and I assume some creative bending will be in order to make one or the other work.
Couldn't find any detail on the manual oiler return spring so just rednecked it hoping it was right. Seems to have strong rebound the way I have it now.
Not too many extra parts with this particular project but there are always a couple. Any idea where this bushing and extra bumper belong? Couldn't seem to find em in the IPL's. BTW, if I learned anything doing this rebuild it was don't remove the bottom plate nubbers/bumpers and expect them to go back in easily! What a hassle. My fingers still ache from two nights ago. But about these two rubber bits....
Something to do with the manual oiler maybe???
And something certainly seems to be missing here...
So now the dilemma is whether or not to go back to the fixed jet SDC and just live with it or struggle to adjust the one that's on there now. Don't want to carve up the tank just for the adjustable carb but can't afford the right tank for the current carb, either. But I also messed up the old carb body drilling out the welch plug..., argh.
A couple of things wrong with this picture, not the least of which is no choke rod yet. Can't figure it out for the life of me unless the fixed jet rod simply doesn't fit the arrangement of the different SDC. The idle screw clearly doesn't..., nor is it necessary except to plug the hole to keep dust and dirt out of the air box. And tuning this rascal looks like it may be a little tricky, eh? Hmmm....
Two choke rods to choose from. The top one came with the fixed jet carb and doesn't even want to see the carb now on it. The bottom one doesn't quite fly either, but looks a bit more along the lines of what seems to be needed. As it stands, neither one fits and I assume some creative bending will be in order to make one or the other work.
Couldn't find any detail on the manual oiler return spring so just rednecked it hoping it was right. Seems to have strong rebound the way I have it now.
Not too many extra parts with this particular project but there are always a couple. Any idea where this bushing and extra bumper belong? Couldn't seem to find em in the IPL's. BTW, if I learned anything doing this rebuild it was don't remove the bottom plate nubbers/bumpers and expect them to go back in easily! What a hassle. My fingers still ache from two nights ago. But about these two rubber bits....
Something to do with the manual oiler maybe???
And something certainly seems to be missing here...
So now the dilemma is whether or not to go back to the fixed jet SDC and just live with it or struggle to adjust the one that's on there now. Don't want to carve up the tank just for the adjustable carb but can't afford the right tank for the current carb, either. But I also messed up the old carb body drilling out the welch plug..., argh.
BTW, this is the fixed jet carb that I took off the saw (a '12' prefix serial number model). Note the diagonal idle mixture adjust screw, #15.
brandonstc6
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Great work on the saw. It looks good. I don't have too much to add but I did notice the same thing on my super pro 60 on the carburetor when I swapped out the carburetor for a NOS one. The old carburetor used the idle adjustment screw like the one on your saw. The new carburetor had the idle screw on the carburetor like yours. I can't remember if I left out the idle screw in the saw or not. I need to replace mine with a short screw. That is unusual about there not being a hole for the adjustment in the saw. On the choke rod question. I have a pro Mac 10-10 with the same carburetor as your saw. It's in the trunk of my car. If you want, I can take a picture of the choke linkage for you. I'm sure Mark will chime in soon with answers to your questions.
Good luck with your saw.
Sent from my iPhone using Tapatalk
Good luck with your saw.
Sent from my iPhone using Tapatalk
I don't know what saw the fuel tank/air box came from but every 82 cc saw that I have does have a hole in through the air box for the carburetor adjustments. I used the PM805 for this illustration since the black plug stands out so well against the yellow air box. You can also see the notch for the idle screw adjustment.
For the choke linkage, the bottom "choke rod" seems to look more like it. The shorter leg with the hook in it connects to an eyelet on the end of the choke knob. You do need to have the rubber snubber there to hold the choke in place.
I have a few spare tanks in the attic, let me look tonight to see if I have one with the hole for the carburetor adjustments and the notch for the idle adjust screw. Not sure you want to go backwards or wait for your current project. All of the SDC carburetors used on the 82 cc saws have the long adjuster screws with the boot you seen in the photo above sealing the hole in the air box. I have had a few where I needed to bend the tab on the throttle shaft to make the idle speed screw work properly.
I changed the carburetor on one of my SP125's to a fully adjustable SDC with the large bore, yes the original was in fact the smaller bore carburetor with a fixed H jet. Making adjustments is not easy, but I find I don't have to move them very much or very often. This one is just a GTG saw that I take along to Baraboo each year.
The original
The replacement, fortunately the throttle rod just travels enough to be the idle speed adjustment as well. I did have to add the hole and the fitting for the impulse but that worked out even better than I could have hoped. I stole a fitting from another carburetor I had laying around and pressed it into a hole I drilled in the cover over the fuel pump diaphragms.
Mark
For the choke linkage, the bottom "choke rod" seems to look more like it. The shorter leg with the hook in it connects to an eyelet on the end of the choke knob. You do need to have the rubber snubber there to hold the choke in place.
I have a few spare tanks in the attic, let me look tonight to see if I have one with the hole for the carburetor adjustments and the notch for the idle adjust screw. Not sure you want to go backwards or wait for your current project. All of the SDC carburetors used on the 82 cc saws have the long adjuster screws with the boot you seen in the photo above sealing the hole in the air box. I have had a few where I needed to bend the tab on the throttle shaft to make the idle speed screw work properly.
I changed the carburetor on one of my SP125's to a fully adjustable SDC with the large bore, yes the original was in fact the smaller bore carburetor with a fixed H jet. Making adjustments is not easy, but I find I don't have to move them very much or very often. This one is just a GTG saw that I take along to Baraboo each year.
The original
The replacement, fortunately the throttle rod just travels enough to be the idle speed adjustment as well. I did have to add the hole and the fitting for the impulse but that worked out even better than I could have hoped. I stole a fitting from another carburetor I had laying around and pressed it into a hole I drilled in the cover over the fuel pump diaphragms.
Mark
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