Shot crankshaft bearing on Stihl, advice anyone?

[madrone]

So I picked up a running MS210 to rebuild. Got a good deal because the owner said something was loose in the engine.
I figured worn piston skirt and took it apart. Turns out the piston is in great shape, cylinder is fine but the lower bearing connecting the crank/rod is cracked.

In trying to replace this non-rebuildable part, I find mixed info on whether I can use any crank from the 1123 series?

Using the search, I find advice saying the 021/ms210 had different port timing and a shorter rod than the rest. Because of this I can only replace the crank with another from a 021/210.

However, a popular used part seller on Ebay tells me any of his 1123 series cranks will work.

Thoughts, or does anyone have the right part to sell me?

-Mark

 

[Dan_IN_MN]

This probably should be titled "Shot big end rod bearing" Can't help with part replacement.

 

[w8ye]

The 210 does have a unique crankshaft that is only used in that model

It has only one counter weight on the crankshaft

The connecting rod will slide right off and is replaceable along with the bearing rollers which incidentally, may be your problem?

 

[Fish]

Yes, you can only use the cranks out of the MS210 and the newer 021s, the older ones have the replaceable rod and loose rollers.

View attachment 281620

 

[w8ye]

Fish is correct

The MS210 has a 1.1" stroke whereas the 230 and 250 have a 1.26" stroke

 

[madrone]

Thanks for the input.
I was pretty sure of it, but when a large part seller on ebay tells you any of them will work, you have to check.

Now i've got to figure out how to tell him he's wrong.......

 

[Jacob J.]

Thanks for the input.
I was pretty sure of it, but when a large part seller on ebay tells you any of them will work, you have to check.

Now i've got to figure out how to tell him he's wrong.......

I know a local guy who has a bunch of 210 parts if you want to go that route.

 

[w8ye]

Thanks for the input.
I was pretty sure of it, but when a large part seller on ebay tells you any of them will work, you have to check.

Now i've got to figure out how to tell him he's wrong.......

Best way to get the message to him is to buy elsewhere!

 

[H 2 H]

Fish is correct

The MS210 has a 1.1" stroke whereas the 230 and 250 have a 1.26" stroke

I believe you can put a 250 p/c in place of a 210 p/c in those saws

You can get a 250 p/c kit from a member here

 

[madrone]

I know a local guy who has a bunch of 210 parts if you want to go that route.

Pm Sent

I believe you can put a 250 p/c in place of a 210 p/c in those saws

You can get a 250 p/c kit from a member here

Thanks, but I bought the saw to re-sell, and i'm trying to keep costs down.

 

[w8ye]

A 250 makes a fine limbing chainsaw.

 

[madrone]

I still haven't been able to find a used crank for the ms210. Anyone have one to sell me?