McCulloch Chain Saws
- Thread starter Bruce Hopf
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matt_lamb_160
ArboristSite Operative
Thanks Mark. Nice parts and pictures. What you have said is what I knew, I thought you might be seeing something else.
Most (all?) of the 80cc saws didn't have the third port, but it is very common in the 87cc+ (dual ball bearing) saws.
I wouldn't mind a couple if those 1-71/81 blocks!
matt_lamb_160
ArboristSite Operative
It’s relatively easy slight bar stud widening and oil hole relocation from a large Husky mount bar my Mac 125 the Husky bar actually fit over studs just barely and a oil hole relocation I always open up the holes on all my bars they don’t come as large as they use to back in the early days
matt_lamb_160
ArboristSite Operative
Next bar, I am planning to cut a slot down the the adjuster hole via the bar groove with my Dremel and grinding blade.
The IPL for the 7-10a (600052D) shows the part number as 87166 for the wide ring set. The piston is 1.995” in diameter and the rings are 1.2mm thick.
Ah, yes..., the phantom 'thick ring' 85239 piston raises its head yet again.
Some background on the 70cc piston/ring discussion and 85239 controversy..., in some circles anyway.
https://www.arboristsite.com/threads/mcculloch-chain-saws.71126/page-2145
Some background on the 70cc piston/ring discussion and 85239 controversy..., in some circles anyway.
https://www.arboristsite.com/threads/mcculloch-chain-saws.71126/page-2145
I have a few sets of 87166 hiding in the attic.
Mark
Mark
I have one I got in a lot of saws a couple years back. Kind of a brick but runs and cuts pretty good.
Ranger-692
ArboristSite Member
Picked up a 250 today from a small engine shop for $25, I was told it was seized. Figured if nothing else it was a good parts saw everything pretty straight otherwise. Turns out a mouse had made a nest in the exhaust port and cylinder and that was it. Cleaned everything up put a plug in and fired right up on a prime. Now the issue is won’t pull fuel after firing on prime 7 or 8 times. Any quick tips on what I might check? Spray carb cleaner? Soak in sea foam? Thanks!
Also any tips on getting the nuts back on when reassembling the pull rope mechanism would be helpful, looks like at one time they were tacked onto the inside of the housing but 2 of the 3 fell out when I took apart. Now I have to figure out how to get em back in.
Also any tips on getting the nuts back on when reassembling the pull rope mechanism would be helpful, looks like at one time they were tacked onto the inside of the housing but 2 of the 3 fell out when I took apart. Now I have to figure out how to get em back in.
Rebuild kit for carburetor should fix you up and new fuel line.
That saw should have a Tillotson HL carburetor, gaskets & diaphragms are DG5. If you need the fuel line from the tank to the carburetor I am bless with a large number of those parts.
For the starter, remove the flywheel housing and put it all back together, in the future if you need to service the starter just remove the whole flywheel housing...we all have learned that lesson along the way. You could try some hot glue to stick the nuts in place but I normally remove the whole cover.
If you don't have the David Lee / Mike Acres picture book of old saws you wouldn't know that those captive nuts were the bane of many chainsaw mechanics.
Mark
For the starter, remove the flywheel housing and put it all back together, in the future if you need to service the starter just remove the whole flywheel housing...we all have learned that lesson along the way. You could try some hot glue to stick the nuts in place but I normally remove the whole cover.
If you don't have the David Lee / Mike Acres picture book of old saws you wouldn't know that those captive nuts were the bane of many chainsaw mechanics.
Mark
FreakinCoolUsername
ArboristSite Member
Hey everybody long time no see. Anyway anybody know where i can source a Tillotson HK19? I have a project with a 610 that im going to be doing but i want it to have a Tillotson HK19 on it.
Ranger-692
ArboristSite Member
Got the 250 rippin now. After clean up it looks like it had a relatively easy life then was put away for 30 years. Cant believe someone just gave up on a saw like that.
An awful lot of saws end up that very way. Sitting in abuilding for many many years.
North East Tennessee MAC Report
Another beautiful day in North East Tennessee, 60s to low 80s, I always like to start with the good part.
No new records, but two personal firsts today and myth busting (sort of) … I am getting ahead of the story so I will redirect to the day's beginning.
I was off to the range alone as Brian was entertaining company. I thought I would just be gathering logs, so I only took the PM 700 and an off-brand 60cc saw. I arrived a tad after 8:00 to find a freshly mowed area around the range’s equipment and mine. So trying to be a nice guy, I decided to move everything out of the way. Truck wouldn’t start. While the truck batteries were being charged, I moved the D7 only to find that I don’t know how to turn it off nor did anyone else at the range. A quick call to a friend took care of that embarrassment. Then the tractor that had been running minutes early refused to start. Long intro to 2 ½ hours later I am finally on the hill to collect logs.
There was more bucking to do than I recalled, but no real problem as I had two fully fueled saws ready to go. While bucking I noted a large fresh dead ash and a smaller red oak with a dead top. I decided to fell the red oak and leave the ash for another day when I had something with a longer bar.
700 ready to take on the red oak on the right.
End log rolled while bucking, sticking the 700.
Second log rolled, sticking the off-brand while I was hoping it would free the 700.
Nothing the Deere can’t handle – famous last words - leading to Personal First #1 - Catastrophe – 700 remained stuck when log lifted and moved. I finally freed it only to have oil streaming out of it. I tried to catch some with the off-brand which had been freed in an earlier attempt. Too late, not a drop left in the 700. This can’t be good. And it wasn’t. I waited until I got home to inspect it closed. In the woods all you could see was oil and dirt.
Clutch cover okay except for a broken adjuster screw.
700’s crankcase is spit all the way to the crankshaft.
A fin is broken off cylinder.
I don’t know if further exam will be an autopsy (RIP 700) or lead to corrective surgery.
Personal First #2 – adding insult to injury - I picked up the off-brand to finish bucking the red oak and felt something wet and warm going down my leg. Yes, I forgot to put the oil cap back on it.
All of that for this pile of logs.
I don’t know about you guys but I am beginning to see a trend – Brian and I have all kinds of misadventures, but the real carnage seems to happen when he isn’t there.
Wait, I almost forgot the myth busting and to answer the question on every sane person's mind as to why I didn’t just move the stem with my cant hook to free the saws. My cant hook was down the hill safely hiding in my pickup – no mistake or forgetfulness – it is currently useless.
We have all heard of the mythological guy who could break an anvil – I believe he actually exists.
Be safe,
Ron
Another beautiful day in North East Tennessee, 60s to low 80s, I always like to start with the good part.
No new records, but two personal firsts today and myth busting (sort of) … I am getting ahead of the story so I will redirect to the day's beginning.
I was off to the range alone as Brian was entertaining company. I thought I would just be gathering logs, so I only took the PM 700 and an off-brand 60cc saw. I arrived a tad after 8:00 to find a freshly mowed area around the range’s equipment and mine. So trying to be a nice guy, I decided to move everything out of the way. Truck wouldn’t start. While the truck batteries were being charged, I moved the D7 only to find that I don’t know how to turn it off nor did anyone else at the range. A quick call to a friend took care of that embarrassment. Then the tractor that had been running minutes early refused to start. Long intro to 2 ½ hours later I am finally on the hill to collect logs.
There was more bucking to do than I recalled, but no real problem as I had two fully fueled saws ready to go. While bucking I noted a large fresh dead ash and a smaller red oak with a dead top. I decided to fell the red oak and leave the ash for another day when I had something with a longer bar.
700 ready to take on the red oak on the right.
End log rolled while bucking, sticking the 700.
Second log rolled, sticking the off-brand while I was hoping it would free the 700.
Nothing the Deere can’t handle – famous last words - leading to Personal First #1 - Catastrophe – 700 remained stuck when log lifted and moved. I finally freed it only to have oil streaming out of it. I tried to catch some with the off-brand which had been freed in an earlier attempt. Too late, not a drop left in the 700. This can’t be good. And it wasn’t. I waited until I got home to inspect it closed. In the woods all you could see was oil and dirt.
Clutch cover okay except for a broken adjuster screw.
700’s crankcase is spit all the way to the crankshaft.
A fin is broken off cylinder.
I don’t know if further exam will be an autopsy (RIP 700) or lead to corrective surgery.
Personal First #2 – adding insult to injury - I picked up the off-brand to finish bucking the red oak and felt something wet and warm going down my leg. Yes, I forgot to put the oil cap back on it.
All of that for this pile of logs.
I don’t know about you guys but I am beginning to see a trend – Brian and I have all kinds of misadventures, but the real carnage seems to happen when he isn’t there.
Wait, I almost forgot the myth busting and to answer the question on every sane person's mind as to why I didn’t just move the stem with my cant hook to free the saws. My cant hook was down the hill safely hiding in my pickup – no mistake or forgetfulness – it is currently useless.
We have all heard of the mythological guy who could break an anvil – I believe he actually exists.
Be safe,
Ron
I know none of it went to plan but man it's written beautifully.
Hopefully the 700 will live again. I'm sure it will
Your story telling is brilliant Ron
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