McCulloch Chain Saws

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I ran the SP80 alittle, too see how it liked the 32" bar , I have full comp on it and sunk it into some seasoned red oak thats about 40" across. I did ok ( struggled at full pull)but I think it would live happily with semi skip or full skip . It's not broken in yet either so maybe a few more tanks when its not 93° with a heat index over 100°.
 
I can't seem to figure out the primer on the 4-30. Thus is the order of the parts which seems to concur with the IPL. The problem I see is that the plunger does not seem to come out far enough to uncover what I assume to be the inlet port that allows the primer to fill with fuel.
What am I missing here? Someone with some experience with these things??
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e6aeb717fd09440ce3e2e908b93954b4.jpg


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Hey guys,I bought a Mac15.It's missing a couple things - bar clamp,oil pump knob,air cleaner cover,& a couple screws here & there.The guy I bought it from said he had it running,how he did this I have no idea because the lo needle was 3 turns out & the hi was only 1/2 turn out.This could explain why he said it definitely needed a carb rebuild.I set both needles to 1 1/2 turns out & it started (it wouldn't start the other way they were set) & it still runs a tad rich.For some reason I always thought these 15s were a much bigger & heavier saw.This saw was Mac's first saw sold to the general public as a "homeowner" saw.I would've put some pics on here today,but all it did all day was rain.
 
In honor of Kevin's post I ran my PM55 today for a crab apple removal and I'll take it along for a couple of large ash trees tomorrow. The torque is really impressive when I switch from the 550XP.

Mark

How’d it go with those ash trees?
Any pics?
I like seeing old Mac’s earning their keep.
 
I did not take any photos today, but I am happy to report the PM55 worked extremely well. This was my first outing with my new work truck (2016 F150 with standard cab and short box) and it certainly hauls a lot more than the Ranger. I will have to remember to take the PM55 and 7-10 out more often.

My daughter is trying to arrange for an aerial lift for next week to take down the last birch in their back yard. This one is severely over their house and will require some fine work to get it out safely. There is also a large oak stem sticking up further back in the yard that will come out. Part of the top came down in the Derecho last year and the utility folks took care of the rest so they could string the lines back up out of harms way. All that is left is about 25 feet of nice straight log sticking up. This is before the utility crew showe up...the shed it now gone as well.

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Mark
 
I can't seem to figure out the primer on the 4-30. Thus is the order of the parts which seems to concur with the IPL. The problem I see is that the plunger does not seem to come out far enough to uncover what I assume to be the inlet port that allows the primer to fill with fuel.
What am I missing here? Someone with some experience with these things??
8886ea5b0965bc553d29a906ed0d8bc8.jpg
e6aeb717fd09440ce3e2e908b93954b4.jpg


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Bump..... anyone know theses saws? @heimannm?????

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If you are done with the rain Ed you can send it back our way, we could certainly use some more.

Mark
We actually had too much,yesterday alone we got 3 1/2 in.which led to some flooding in areas.I'm high & dry on top of a hill mostly comprised of rocks & sandy loam.I don't even have or need a sump pump in the basement.You folks out in the midwest are suffering,but not quite as bad as in the SW & west coast.
 
Bump..... anyone know theses saws? @heimannm?????

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Well I figured it out. It turns out despite the umbrella looking fine and being nice and pliable it was apparently worn out. Also, apparently it us the same part number as the umbrella on the oiler piston of the later large frame saws, luckily for me I hD one is stock lol. The saw runs really good, I did the best I can with the chain, it won't cut straight for anything, may be the bar. I have a 30ish inch bar and chain on the way for it. The saw will obviously be more of a shelf saw anyway lol.


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Next problem.... I have this Super 250. I cleaned it up and it ran decent with some new fuel lines. I went to cut with it one day and it went very lean and died, thought the flatback carb was the culprit so I rebuilt a Tillotson I had here off a parts saw (with the proper adapter) but it acted the same. Anyway, long story short. I have since totally rebuilt the saw with an NOS piston all new seals and NOS gaskets. I have tried 2 different rebuilt Tillotsons and rebuilt the Flatback. The only way it will run at all is with the needles 4+ turns out and it is still way lean at that point. I have checked the fuel lines with a mity vac and have no leaks, I have even used the brake bleeder canister on the mity vac to make sure I can pull fuel through the fuel filter. My gut reaction is that the Stihl style fuel filter I used isn't passing enough fuel but I don't have anyrhing else to swap in its place. It really is the only thing that hasn't been changed since the problem first started.
What does everyone else think?

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Well I figured it out. It turns out despite the umbrella looking fine and being nice and pliable it was apparently worn out. Also, apparently it us the same part number as the umbrella on the oiler piston of the later large frame saws, luckily for me I hD one is stock lol. The saw runs really good, I did the best I can with the chain, it won't cut straight for anything, may be the bar. I have a 30ish inch bar and chain on the way for it. The saw will obviously be more of a shelf saw anyway lol.


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Throwing a pile of chips out!!
 
If you've converted over to the new style fuel filters,then you most likely can't use the old style plug filters?What I've done just as an experiment is use those old plug style filters over again.They were the dirtiest I had on hand & I soaked them in Dawn dish detergent & hot water overnight,then rinsed them out & soaked them in another batch of Dawn & hot water & rinsed again,then dried them out for a few days in my house with wood heat in winter.I put a couple in saws,not expecting much,but they worked like new.
BTW,the 4-30 is running good! I'll bet that new bar & chain will make a world of difference.
 
Those are nice little saws Al.Heads up on the type of bar oil she uses - use a very light oil,like 5-15W because the oil pumps have cheapo plastic gears in them.If she uses a heavier conventional bar oil especially in the winter it'll strip those gears right out.Good luck on finding a new oil pump.
 

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