MCCULLOCH The official McCulloch thread

[heimannm]

Finished up this PM700 this week. Red Cote in the fuel tank was finally cured, starter in 3 or 4 pulls.







Good acceleration and oils well too...

Mark

 

[hacskaroly]

Finished up this PM700

That's a really nice looking saw!! Glad it's running well too!!

 

[cinci5]

Just wanted to let people know that I have added the 3-25 and 4-30 gasket set to my eBay.

Security Measure

www.ebay.com

 

[hacskaroly]

Just wanted to let people know that I have added the 3-25 and 4-30 gasket set to my eBay.

That is a nice looking set of gaskets!

 

[heimannm]

Unintended consequences...

A few weeks ago someone left a very rough McCulloch PM650 here. I have an intern (local high school) so I had him work on it for the experience. We checked compression and it was 155 so I decided it was worth the time & effort to make it a runner again. Tore the saw down, removed the flywheel using the "smack the nut while holding the flywheel method" and proceeded to tear the saw down for a good cleaning.

After cleaning I tried spinning the saw over and it would only go part of a revolution...so I had him break the crankcase open (clamshell design). We could see nothing wrong, no foreign objects in the crankcase or cylinder...so reassemble the saw with a new PTO side bearing two new seals. Upon reassembly and torquing the screws we were back to a dragging resistance and I thought the flywheel looked awfully close to the crankcase. I used a hard plastic hammer to "realign" the crankshaft from the PTO end and the saw turned freely again.

At that point I just assumed the intern had dropped it while cleaning and caused the crankshaft to shift, but when I was installing the flywheel nut I remembered our disassembly process and knew what had happened.

I will still use the "smack the nut" method for many saws, but will try to be more aware that it is possible to shift the crankshaft on the bearings when you use that procedure.

Mark

 

[ErnieG]

Maybe someone would be interested in this ...

 

[LAWN BOY]

Maybe someone would be interested in this ...View attachment 451742

I'd get it if it was local to me

 

[jacob j.]

Re-pop front vibration mounts from Bryce for the 125s:

NEW FRONT MOUNT BUFFER FOR McCULLOCH 105 125 SP125 CP125 CHAINSAW # 85897 | eBay

UP FOR SALE IS ANEW FRONT MOUNT BUFFER FOR McCULLOCH 125 CHAINSAW # 85897.

www.ebay.com

 

[heimannm]

I still have a few NOS pieces in the attic...

Mark

 

[Stump Shot]

I've recently made some plates for checking crankcase leaks. This is for the 10 series saws. You drill for your fitting you want to use. I would like to make some for the bigger saws but need cylinder for exhaust and intake fitment. Is anyone willing to let me borrow one. It can be roached on inside as I only need outside.
https://www.ebay.com/usr/cinci5
https://www.arboristsite.com/threads/mcculloch-chain-saws.71126/post-8378381

Set I ordered came in the mail today, looks very well made. I will be using mine along with an adapter w/hose barb on the spark plug hole and the piston at BDC. No drilling for this guy. Thanks for offering up this tooling for others to use and enjoy.
Now all I need is a Mac to tear into...

 

[hacskaroly]

Now all I need is a Mac to tear into...

So many choices!!

 

[Stump Shot]

So many choices!!

That's a good thing!

 

[heimannm]

 

[cinci5]

Set I ordered came in the mail today, looks very well made. I will be using mine along with an adapter w/hose barb on the spark plug hole and the piston at BDC. No drilling for this guy. Thanks for offering up this tooling for others to use and enjoy.
Now all I need is a Mac to tear into...

Thank you for your kind words. I enjoy making things that will help. I figure in my journey to repair and fix things that anything that worked for me will possibly help others. I will be making the large frame plates, PM800-850 etc. , in the next few weeks hopefully. https://www.ebay.com/usr/cinci5

 

[Stump Shot]

Thank you for your kind words. I enjoy making things that will help. I figure in my journey to repair and fix things that anything that worked for me will possibly help others. I will be making the large frame plates, PM800-850 etc. , in the next few weeks hopefully. https://www.ebay.com/usr/cinci5

Glad to hear you like building them, as there are lots more out there that could be done. Enough a guy could keep as busy as he'd like to be I would venture to say.
Best of luck to you going forward with this venture.

 

[hacskaroly]

I have been practicing on cleaning up damage on my McCulloch 200's fan housing. I don't have a media blaster, so I have been using sandpaper and Dremel wheels to get the paint and primer off. Once I find the damage or metal rot areas, I then use a burnishing tool to get out the metal rot and down to good metal. I then fill the recesses with JB Weld and when it is dry, then sand that down. It looks like McCulloch used a tan primer under their paint, unfortunately I only have grey to work with right now. I am using Rustoleum's metal etching primer and it seems to easily cover without having to do too many passes. The top three pictures are before the JB Weld and primer went on. Bottom two are after. Any ideas on cleaning up and buffing the hard rubber spark plug cover?





There are still a couple of blemishes I missed that easily show up with the primer that I will need to address, a couple of small pits and some excess JB Weld that didn't get sanded down.

 

[heimannm]

Check with Max (@knightmax), I think he may have some reproduction spark plug covers that would work on that saw.

Mark

 

[cinci5]

I have been practicing on cleaning up damage on my McCulloch 200's fan housing. I don't have a media blaster, so I have been using sandpaper and Dremel wheels to get the paint and primer off. Once I find the damage or metal rot areas, I then use a burnishing tool to get out the metal rot and down to good metal. I then fill the recesses with JB Weld and when it is dry, then sand that down. It looks like McCulloch used a tan primer under their paint, unfortunately I only have grey to work with right now. I am using Rustoleum's metal etching primer and it seems to easily cover without having to do too many passes. The top three pictures are before the JB Weld and primer went on. Bottom two are after. Any ideas on cleaning up and buffing the hard rubber spark plug cover?
View attachment 452732

View attachment 452733

View attachment 452734
There are still a couple of blemishes I missed that easily show up with the primer that I will need to address, a couple of small pits and some excess JB Weld that didn't get sanded down.
View attachment 452735

View attachment 452736

Get some spot putty for the remaining pits. It works great and blends easily or use in place of JB.

 

[hacskaroly]

Get some spot putty for the remaining pits. It works great and blends easily or use in place of JB.

I have some Bondo Spot Putty, will use that. With the metal rot, I am sure I am not getting 100% out, though after grinding on it I am cleaning it out real good with Acetone before putting the JB Weld down. Wasn't sure which would be better to reduce the rot spread/return, seems like JB weld ends up being harder than the spot putty and that is why I am mostly using this right now. I do have the traditional Bondo with hardener too, but have not used it yet.

 

[cinci5]

I have some Bondo Spot Putty, will use that. With the metal rot, I am sure I am not getting 100% out, though after grinding on it I am cleaning it out real good with Acetone before putting the JB Weld down. Wasn't sure which would be better to reduce the rot spread/return, seems like JB weld ends up being harder than the spot putty and that is why I am mostly using this right now. I do have the traditional Bondo with hardener too, but have not used it yet.

I just meant to use putty for the little ones that were left that's all.