McCulloch mystery

[MrRogers]

Hello,

I have a McCulloch Timber Bear (model 11-600134-14) that was given to me by my father in law. I did a tune up and got the motor running nicely but the sprocket has been sheared off of the clutch housing. Don't know how this happened but I am having trouble finding a new one. I don't know the part number and therefore don't know if some of the parts that I've found online (locally we have nothin) will fit. I appreciate any input.

 

[promac850]

If you've got the Timber Bear 3.4 or 3.7, a clutch drum for a Pro Mac 605/610/650 and other 10 series Macs will fit. PM700, 850, etc. They all use the same clutch drum.

As for it being sheared, probably too many full throttle chain brake engagements. Some users like to test it every time they fire the saw up. Needless to say, it can cause problems...

Or it may have been defective. Rare case if so.

 

[promac850]

This here is the one you need. Posted link to Baileys since we cannot use a non sponsor for most chainsaw related products.

https://www.baileysonline.com/Chain...-Drum-System-for-McCulloch-Pro-Mac-Series.axd

3/8" chain is likely what you have on the saw.

Also, this set up would upgrade you from spur drive to rim drive. In my opinion, rim drive is superior.

 

[MrRogers]

If you've got the Timber Bear 3.4 or 3.7, a clutch drum for a Pro Mac 605/610/650 and other 10 series Macs will fit. PM700, 850, etc. They all use the same clutch drum.

As for it being sheared, probably too many full throttle chain brake engagements. Some users like to test it every time they fire the saw up. Needless to say, it can cause problems...

Or it may have been defective. Rare case if so.

So how do I find out which model I have? There are no markings anywhere on the saw, except model and serial numbers, to tell me what model it is. Thanks for your reply.

 

[WhistlePunk99]

Help

Got a picture of her?

 

[promac850]

So how do I find out which model I have? There are no markings anywhere on the saw, except model and serial numbers, to tell me what model it is. Thanks for your reply.

Does it look like this yellow/black saw in upper part of picture?

 

[MrRogers]

Here are some pics I haveView attachment 309524View attachment 309525View attachment 309526

 

[MrRogers]

sorry. my comp didn't load that picture until now. It looks just like that one

 

[heimannm]

The clutch drum from any 10 Series or 600 Series saw will work. You can get drums with the spur type sprocket, or the spline on the drum that will let you change the sprocket and keep the drum.

Mark

 

[Warped5]

To the OP - Can you post a pic of this 'sheared' drum/sprocket? McCulloch did have what can best be described as a 'one-piece' rim & drum .... the rim was welded onto the drum.

Whichever you need/prefer, I can probably help you out. Please PM me.

 

[MrRogers]

Here is the drum and sprocket. It appears to have sheared off

View attachment 309557

 

[cat-face timber]

Did that just wear out?
I have never seen one shear like that.

 

[MrRogers]

It was given to me like that so I can only speculate

 

[Adirondackstihl]

:msp_scared:

Here is the drum and sprocket. It appears to have sheared off

View attachment 309557

 

[promac850]

Did that just wear out?
I have never seen one shear like that.

Looks like it had chains put on it over and over again. I've got a spur sprocket/drum laying around that isn't that far from doing the same thing.

Notice the newer Oregon bar in the pictures he posted.

MrRogers, send a private message to Ted like he said to, he'll take care of ya.

 

[promac850]

:msp_scared:

Yeah, she doesn't owe a damn penny. That sprocket has given all it has, and more.

Could happen to a Stihl too...

 

[ckelp]

Here is the drum and sprocket. It appears to have sheared off

View attachment 309557

and thats how i got my 2nd very clean poulan 3300 for free

no one ever thinks the sprocket wears out

 

[MrRogers]

that's pretty intense that it wore out just from use. Must've seen alotta wood. Thanks everyone for your help

 

[Adirondackstihl]

Yeah, she doesn't owe a damn penny. That sprocket has given all it has, and more.

Could happen to a Stihl too...

Sure.... It could happen to any saw.

Still upset I tried to deter you from porting an 08S?
I'm not a die hard STIHL fan. I drink the orange koolaid too! The green koolaid, blue koolaid, red koolaid......

If you need 08/08s parts I have a few. Including a complete crankcase.
Just let me know & they're yours.

No hard feelings Mr.Mac

 

[mattthompson]

I've seen one shear like that but on a 025, the spur looked like it was brazed on the drum.