MCCULLOCH The official McCulloch thread

[Dream]

Let's see a photo of the flywheel side with the flywheel off just to confirm, the seal pressed into the bearing might look like it is pressed into a sleeve in the bore.

Mark

How about one of the crank out of the casing?
I may be able to find these locally.
Rings are my main concern at this point.
I'm going to clean the old ones a little better this afternoon and see if I can get some more info on them.

 

[PogoInTheWoods]

That's a thin ring piston?

 

[PogoInTheWoods]

And some lacquer thinner should make quick work of that varnish.

 

[Dream]

That's a thin ring piston?

Yes. .045" according to the calipers.

 

[Dream]

No luck on seals.
Heres the ID tag.

 

[PogoInTheWoods]

Not the cleanest 10-10S IPL I have, but is specific to your tag.

 

[Dream]

Not the cleanest 10-10S IPL I have, but is specific to your tag.

Its ok. Its not the cleanest 1010S either.
It is getting better though. Thanks a lot Poge.

 

[Dream]

Looks like ring set is pn-92517.
Small seal is pn-110260
Large seal is pn-67906.

 

[Maintenance Chief]

Its ok. Its not the cleanest 1010S either.
It is getting better though. Thanks a lot Poge.
View attachment 302056 View attachment 302057 View attachment 302058

HA! That thing is a creampuff under the grime. I noticed that the tank still had a piece of the tar strip in the air box, thats a good sign that it was never apart ,except maybe a dealer. Even the handle has most of the paint.
If you can't find rings you can always flip top to bottom, the bottom is hardly ever worn and the top will do what it needs to in the bottom grove.

 

[Lightning Performance]

Question for the Mac guru.

What is the biggest bore will fit into a 1977 SP70?

 

[Maintenance Chief]

I'm no expert but I'm gonna say an 82cc with a fair amount of certainty. Sp80 most likely, I know there was some mounting differences in a few of the 82cc saws but sp60,70,and 80 should interchange.

 

[Lightning Performance]

I'm no expert but I'm gonna say an 82cc with a fair amount of certainty. Sp80 most likely, I know there was some mounting differences in a few of the 82cc saws but sp60,70,and 80 should interchange.

That was my hope to jump up 6 or 8 cc. This jug is gouged looking down the carb hole. It's hurt bad. Rotates 320*
The rest is good. I'm sure it needs rubber in places like new fuel lines.

 

[Maintenance Chief]

That was my hope to jump up 6 or 8 cc. This jug is gouged looking down the carb hole. It's hurt bad. Rotates 320*
The rest is good. I'm sure it needs rubber in places like new fuel lines.

I real problem with any of these swaps up is finding a good 82cc motor, not impossible but difficult.

 

[Lightning Performance]

I real problem with any of these swaps up is finding a good 82cc motor, not impossible but difficult.

The good part is the 70cc cylinders are plentiful in 700 or 710 I was told.

 

[Dream]

HA! That thing is a creampuff under the grime. I noticed that the tank still had a piece of the tar strip in the air box, thats a good sign that it was never apart ,except maybe a dealer. Even the handle has most of the paint.
If you can't find rings you can always flip top to bottom, the bottom is hardly ever worn and the top will do what it needs to in the bottom grove.

Yep. Never had a tank gasket replaced anyhow.
All of the screws are still in it and not buggered up. Whoever had it just ran it til it wore the rings out. The plating had come off several spots in the cylinder. Ive got a good cylinder from the one my dad had a tree fall on, but those rings are shot too. Both top and bottom are over .030" end gap.

 

[Dream]

The good part is the 70cc cylinders are plentiful in 700 or 710 I was told.

Sup Kenny?
Little yellow fever?

 

[heimannm]

0.045" are in fact the thick rings. Thin rings are tool steel and 0.022" thick. 92517 are the correct rings if there are no locating pins. You have the correct seal numbers, let me know if you can't find them elsewhere.

Mark

 

[heimannm]

This is a reasonable offer.

Proline® Oil Seal Set For McCulloch 10-10 555 605 610 650 655 690 110260 67906 | eBay

Mark

 

[Dream]

This is a reasonable offer.

Proline® Oil Seal Set For McCulloch 10-10 555 605 610 650 655 690 110260 67906 | eBay

Mark

Thank you sir!
Ordered.
Didnt mean for you to do the leg work for me. Definitely appreciate that!
Let me check to make sure I dont have locate pins on the piston.
If you have a set you can spare, I'll certainly buy them from you.

 

[Maintenance Chief]

The good part is the 70cc cylinders are plentiful in 700 or 710 I was told.

This is some what true but the mounts are cast in the av saws ,so I think you'll have to swap out the top end and keep your original oil tank to retain the av mount. If I'm wrong someone hopefully will correct me.