From 2015 on sawhawgz. 
McCulloch Chain Saws
- Thread starter Bruce Hopf
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M&d is a heck of a lot cheaper. Than the seller on ebay
Thanks.
And I'm aware of that SH info and have actually communicated directly with him before on the subject. Great explanation of the ring applications but still leaves quite a few other questions unanswered.
I think M&D's price is probably incorrect and would be closer to going rate if not higher (which they usually are).
And I'm aware of that SH info and have actually communicated directly with him before on the subject. Great explanation of the ring applications but still leaves quite a few other questions unanswered.
I think M&D's price is probably incorrect and would be closer to going rate if not higher (which they usually are).
OK, Saw those the other day searching for 69412.
Pogo, i did not remove the piston, i just looked thru the intake and i can see skirting bottom all around. Id say it does have the window in question as the one on the right. I did notice my rings are very shiny and likely a bit worn. Looking thru the dsp hole. I may have to remedy that if i can find rings. If i go that far ill have much better pictures but not today.
Sooo what he is saying is we are barking up the wrong tree and it should run fine?
That piston seems same cost as all the 70cc pistons on Ebay. Has anyone got on the blower to Bob about 1?
That piston seems same cost as all the 70cc pistons on Ebay. Has anyone got on the blower to Bob about 1?
That's what he's saying, but I don't buy it as being quite that simple. Too many variables over the years for one piston to be the magic bullet for every combination of rings and cylinders across all the 70cc engine variants..., or maybe so? That's still the big question for me.
And you've already gone the extra mile, Vinny. Thanks a lot.
I don't know why I'm so intrigued by all of this. I guess it's partly because I happen to have acquired a ton of McCulloch material over the years. And unlike most folks, I've yet to come to my senses about the fact that much of it is wildly inconsistent and sometimes just downright contradictory..., not to mention many IPLs being used for multiple models over time across production changes that are more often than not misrepresenting the actual saw you have on the bench anyway.
On the other hand, exploring some of this stuff can be pretty interesting. And in the case of Kevin's 7-10 mystery, if we can actually figure out among us what the issue is, we'll all have learned a helluva lot about all the 70cc Mac engine internals in the process.
And the way I look at it, if Mark couldn't figure it out, it's gotta be a combination of factors that simply haven't presented themselves as a solvable problem by anyone yet or has just frustrated lesser folks to the point of giving up completely when they ran across similar circumstances.
Or something glaringly obvious has simply been over looked.
And you've already gone the extra mile, Vinny. Thanks a lot.
I don't know why I'm so intrigued by all of this. I guess it's partly because I happen to have acquired a ton of McCulloch material over the years. And unlike most folks, I've yet to come to my senses about the fact that much of it is wildly inconsistent and sometimes just downright contradictory..., not to mention many IPLs being used for multiple models over time across production changes that are more often than not misrepresenting the actual saw you have on the bench anyway.
On the other hand, exploring some of this stuff can be pretty interesting. And in the case of Kevin's 7-10 mystery, if we can actually figure out among us what the issue is, we'll all have learned a helluva lot about all the 70cc Mac engine internals in the process.
And the way I look at it, if Mark couldn't figure it out, it's gotta be a combination of factors that simply haven't presented themselves as a solvable problem by anyone yet or has just frustrated lesser folks to the point of giving up completely when they ran across similar circumstances.
Or something glaringly obvious has simply been over looked.
"On the Blower" thats hysterical. I actually did try him at 11ish this morning. He did not answer. I bet hed know though. Typically he sells pistons for around 60 dollars. Ive bought several from him. The only exception was the 8200. It was $99.00! It included everything. Bearings rings wristpin, pin clips and piston.
I think M and D use Bob as their source. They were the only source for a PM8200 piston that turned up when I was searching for mine. I heard Bob had them also, but at $99 from both places I couldn't afford either. Ended up cleaning and re-using the one that I had.
Would be interesting if Bob has 85240's and they're only $28.00.
Would be interesting if Bob has 85240's and they're only $28.00.
Wondered if you guys used that one.
Good that he had an 8200 though I read that they are rocking horse poo
Seems like alot of mac staff were drunk or something numbers up the wack.
If it were my saw I'd probably try that piston. To me it seems most the evidence points towards that style transfer needs that style of piston.
Maybe towards the end of the cast bores in the cp they changed it a little so it could run that piston.
I feel Vinny's 6-10 is probably that very same cylinder on the early 7-10 and now we know what piston its running.
Interesting how Bob is on the phone only but yet is known all over the net
NorthEast Tennessee Saturday MAC Report
Beautiful still day in North East Tennessee, but starting to change to snow with a light breeze. The ground is soaked from the past few days and some light flooding. I've been on the road for a few days and slept in while Brian and Lee headed for the lot. Light work agenda for me, probably didn't earn my lunch, just a sketchy fall of a nice size Ash and straight up fall into the pasture of a small Poplar. With the Ash in mind, I decided to put it on the ground before calling Brian to see if he wanted relief from the lot. The 800 made short work of the cutting. My time was spent pounding wedges trying to turn the Ash about 60 degrees to avoid a clump of trees. Managed only about 30 degrees which put it into the canopies of some other trees. A nice slow fall that wasn't pretty - a long skyward branch folded back and broke off just about the time the stem hit the ground sending head busting size pieces flying passed the stump. Reminded me how the unexpected often happens and how we are often protected. A dollar to a doughnut, if Brian and I had both been there taking turns banging the wedges as usual, one of us would have retreated to the area where all the missiles went. Understandably, Brian wasn't particularly happy that no one was there to lend me a hand if I had been injured.
Ash
Folded back branch.
Missiles (Picture is looking back from the stump. From this viewpoint the path of the broken branch is to the left of the missiles. I had retreated to the right of the tree on the right which only left the missile location for a second person to retreat).
The Poplar succumbed to the 800 without incident.
The mighty 800.
I rewound the 700 recoil last night. It seems to be fine now. I removed the flywheel cover on the 800 as I could see one of the dogs was not returning to center. Found a truck load of oily sawdust. Cleaned it and got things working again.
Ron
This valuable report is provided through the the generous support of MacNuts like you and Blind Squirrel Falling, one of America's greatest imaginary businesses
Beautiful still day in North East Tennessee, but starting to change to snow with a light breeze. The ground is soaked from the past few days and some light flooding. I've been on the road for a few days and slept in while Brian and Lee headed for the lot. Light work agenda for me, probably didn't earn my lunch, just a sketchy fall of a nice size Ash and straight up fall into the pasture of a small Poplar. With the Ash in mind, I decided to put it on the ground before calling Brian to see if he wanted relief from the lot. The 800 made short work of the cutting. My time was spent pounding wedges trying to turn the Ash about 60 degrees to avoid a clump of trees. Managed only about 30 degrees which put it into the canopies of some other trees. A nice slow fall that wasn't pretty - a long skyward branch folded back and broke off just about the time the stem hit the ground sending head busting size pieces flying passed the stump. Reminded me how the unexpected often happens and how we are often protected. A dollar to a doughnut, if Brian and I had both been there taking turns banging the wedges as usual, one of us would have retreated to the area where all the missiles went. Understandably, Brian wasn't particularly happy that no one was there to lend me a hand if I had been injured.
Ash
Folded back branch.
Missiles (Picture is looking back from the stump. From this viewpoint the path of the broken branch is to the left of the missiles. I had retreated to the right of the tree on the right which only left the missile location for a second person to retreat).
The Poplar succumbed to the 800 without incident.
The mighty 800.
I rewound the 700 recoil last night. It seems to be fine now. I removed the flywheel cover on the 800 as I could see one of the dogs was not returning to center. Found a truck load of oily sawdust. Cleaned it and got things working again.
Ron
This valuable report is provided through the the generous support of MacNuts like you and Blind Squirrel Falling, one of America's greatest imaginary businesses
Brian knocking the log pile down with his 805.
Lee making firewood with the 1010.
Ron
Lee making firewood with the 1010.
Ron
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Looks like we have some promising new info. I would love to hop on Ebay and grab one of those pistons to try. The problem I'm having is that it is a hard pill to swallow to drop another $70 on this saw based mostly on theory. Plus it does not look like that piston includes the pin bearings so that leaves me either trying to reuse mine or source new ones meaning even more money spent. Not inclusive of any needed gaskets. It feels a bit daunting!!!
On another note, my mystery Ebay saw was marked as shipped today. Will update when it gets here.
On another note, my mystery Ebay saw was marked as shipped today. Will update when it gets here.
I did not get any pictures this week. After lunch I got back onto that log pile for a short while leveling it down even further. Also after lunch the 805 clutch locked up as did the PM10-10. I am thinking from the low oil that they were getting due to the cold temperatures causing the oil being too thick for the oil pumps to pump. I was using a dab of pre-mix to thinnen out the oil a little. I am going to have to carry a little kerosene with me to cut the oil with when cold. Project number 9996. So I broke out the trusty PM800 and finished out the day. By that time they had some logs set up off the ground supported by two logs on either side for me to cut beside that pile. I had Lee and another worker catching the logs as I was cutting them and loading them in a bucket of a skid steer. We had 2 skid steers running and I was cutting fast enough to keep both skid steers running without stopping. we really got into a rhythm that worked really well. I was making short work out of the wood they had put out for me to cut. The trusty PM800 with a .404 chain was just breezing through the wood. I think it was surprising to the skid steer operators that the old McCulloch could cut that fast. One made the commit while I was on the big pile that as soon as he scooped and dumped I was ready for him to do it again. Glad I had put a razer edge on that chain last night. It was in perfect sharpness and was chewing wood like no other. Ever now and then while cutting on the side pile, I would raise the PM800 up and shower the loaders with chips. Ron knows all too well how I like to do that. Have showered him once or twice with chips. But the trusty old PM800 that I got off Ron showed it might have been the oldest saw by far out there cutting, but was the best saw that had cut there all day. By the way after lunch I was the only one cutting as it was snowing .50 cent piece size snow flakes. Would love to have some sort of wood vice that would hold one end of a log so you could cut without binding. Something for Ron the designer to come up with.
Brian
kbeck
ArboristSite Member
kbeck
ArboristSite Member
The cutting part looks fun at least for awhile don't need the loading part anymore, its snowing here all I need to do is
move snow tomorrow so the wife can go to the gym then maybe work on my saws. Sorry about posting piston pic was going to comment earlier on it and couldn't get rid of it till I posted
Brian, wish I had been there after lunch, but I got caught at the office then home to see my granddaughters. The CAT with the bird beak makes a good log vice. Probably too slow of a turn around for you and the MAC.
Ron
Ron
I started to try that and I got one cut and ran out of fuel. I was trying to get something started but it left ot not return.
Brian
Farmer gave me an antique kant or log pivot . Its a handle with a swivel hook for rolling logs but I use it to hold them and lift them about 3" off the dirt.
