Author Topic: MS250 & 026  (Read 646 times)

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Offline Vance in AK

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MS250 & 026
« on: April 22, 2013, 06:44:34 pm »
I just pickedup an MS250 on Cl for $50.  Haven't seen it yet but it looks clean.  Owner says saw shop said hole in piston & he knows nothing else.  he got it from a friend...  20" bar & chain looks good in pic.
At the price I'll try & fix & sell it, but if I run into other problems &it's not worth it whatparts might work on my 026?

Are the MS250s a decent little saw?

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Offline 660magnum

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Re: MS250 & 026
« Reply #1 on: April 22, 2013, 08:15:58 pm »
There's a two port and a four port 025?  I have a late model 025 that is just like new. Sounds like it has been muffler modded. It is my smallest saw and is not for sale.

I also have a ported 026 PRO with a 3/8 X 16" bar. It is a nice limb saw too. Watch it about not getting the exhaust too high.

I'm sure yours are worth fixing up.
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Offline Vance in AK

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Re: MS250 & 026
« Reply #2 on: April 22, 2013, 08:56:59 pm »
Thanks 660.  Just for the record, my 026 is a great runner.  Just wondering what parts might work for spares.  i'm guessing not many (if any).

Offline 660magnum

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Re: MS250 & 026
« Reply #3 on: April 22, 2013, 09:48:28 pm »
I've never worked much on my saws. I bought them as they are a couple years ago and other than looking at and using them, I don't know much about those two models.

I changed the carb to a new twin needle one on the 025 and the 026 bar was changed from 20" X .325 X .063 to 16" X 3/8" X .050

I had to set the coil clearance on the 026 as it was rubbing on the flywheel. The 026 PRO already had a twin needle carb.

About the only thing common on the two saws is the spark plug.
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Offline Adirondackstihl

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Re: MS250 & 026
« Reply #4 on: April 23, 2013, 08:17:35 am »
Sounds like it has been muffler modded.

What makes you think that? Because of a hole in the piston?

Offline Adirondackstihl

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Re: MS250 & 026
« Reply #5 on: April 23, 2013, 08:20:51 am »
20" bar & chain............whatparts might work on my 026?

Max bar length on that saw should not exceed 16" IMO.
18" on a good day.

Parts compatibility with an 026..........the spark plug

Offline 660magnum

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Re: MS250 & 026
« Reply #6 on: April 23, 2013, 08:37:03 am »
Sounds like it has been muffler modded.

What makes you think that? Because of a hole in the piston?

With the 025, the hole in the muffler body behind the deflector plate has been enlarged to cover the entire recessed area under the deflector. The deflector outlets have been bent out to open them with a big screw driver. In a buried cut on pine, it sets the bark on fire. Also the deflector inside the muffler has had the holes enlarged. The 025 is loud and runs good. Nothing stuffy about it.

This 025 ran rich enough to four cycle even with the muffler mod with the original single needle carb but I changed it to a new twin needle carb before doing any cutting with it. The new carbs were cheap from Stihl at somewhere around $23.

My 026 has had the muffler opened up also to go along with the ported cylinder. It has been done much like the 025 muffler and is also loud.
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Offline Adirondackstihl

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Re: MS250 & 026
« Reply #7 on: April 23, 2013, 09:31:46 am »
I still don't see how you arrive at that conclusion based on the original post?
Are you PMing with the OP? Something isn't adding up here.
Heck, I don't even know how you can tell its been MM'd from the original post.

Offline 660magnum

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Re: MS250 & 026
« Reply #8 on: April 23, 2013, 09:34:29 am »
I'm sorry to mislead you. I know nothing about the original poster's MS250. I've just been blowing about my own 025.
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Offline 3000 FPS

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Re: MS250 & 026
« Reply #9 on: April 23, 2013, 12:08:38 pm »
I still don't see how you arrive at that conclusion based on the original post?
Are you PMing with the OP? Something isn't adding up here.
Heck, I don't even know how you can tell its been MM'd from the original post.


I do not know what your talking about but it was easy to understand that 660magnum was talking about his own saws not the OP's.    Thanks for the tip on the spark plug for parts that will swap.
PP 505, 475, 445.

 

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