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.

cinci5 on eBay

Follow cinci5 on eBay. Buying, Selling, Collecting on eBay has never been more exciting!

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