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#Post#: 81989--------------------------------------------------
Stihl 291 271
By: BlackPlague Date: March 27, 2018, 6:41 pm
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Hey all,
I have a MS291 from 2014 that needs a new cylinder, piston and
rings.
The quote for these parts from the local Stihl dealer was $465 +
tax (13%) Canadian dollars.
Clearly, I won't be going that route.
The part # for the piston and rings is 1141 030 2004.
I am not sure of the part # for the cylinder. Can anybody help
me out?
Is anyone aware of an aftermarket cylinder for this saw?
Thanks,
John
P.S. I've included a couple pictures of the scored P&C.
#Post#: 81999--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: DNX800 Date: March 28, 2018, 4:52 am
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The original Cylinder for your MS 291 is 1141 020 1206 and comes
with piston and rings, piston pin and piston clips. (diameter
47mm) This is the newer version of the cylinder because you
already have the newer updated version of the MS 291 (you say
2014 built). The change was in 2013. You can only use the newer
cylinder and piston for your saw.
#Post#: 82000--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: jmester Date: March 28, 2018, 5:38 am
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So what happen to cause the failure? Lean carb setting, air leak
etc.
#Post#: 82002--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: jmester Date: March 28, 2018, 5:42 am
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[member=1450]Nathaniel Vansickle[/member]
#Post#: 82005--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: BlackPlague Date: March 28, 2018, 8:51 am
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[quote author=DNX800 link=topic=6915.msg81999#msg81999
date=1522230722]
The original Cylinder for your MS 291 is 1141 020 1206 and comes
with piston and rings, piston pin and piston clips. (diameter
47mm) This is the newer version of the cylinder because you
already have the newer updated version of the MS 291 (you say
2014 built). The change was in 2013. You can only use the newer
cylinder and piston for your saw.
[/quote]
Yes, you're right. This saw has the newer version.
Thanks for the part #. That's great!
#Post#: 82006--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: NathanielVansickle Date: March 28, 2018, 8:53 am
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that looks like straight gas.
US list price on that cylinder is $210....not sure how much
conversion fees would make it on your side plus add in shipping
and customs. may or may not be worth the effort to source one
from the states
not aware of AM P&C but i dont look for them
#Post#: 82007--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: BlackPlague Date: March 28, 2018, 8:55 am
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[quote author=jmester link=topic=6915.msg82000#msg82000
date=1522233518]
So what happen to cause the failure? Lean carb setting, air leak
etc.
[/quote]
I'm not entirely sure. The gas/oil mix in it seems to have been
good. It may have been over-revved/over-heated. Any thoughts on
diagnosing cause would be appreciated.
#Post#: 82275--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: BlackPlague Date: April 22, 2018, 11:11 am
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As a continuation of this thread, I purchased the new OEM
cylinder, piston and rings and am working on the rebuild.
I'm getting ready to seal the cylinder to the pan, but when I
seat the crankshaft on the pan, I can't help but notice that the
oil seals don't seem to be seating nicely. The oil seals appear
to be in excellent condition. If you look at the attached
pictures, you can see that the oil seals are sealed to the pan
on the sides (1 & 2) but not on the bottom (3). The service
manual states I should not be using gasket maker on the seals.
This is my first chainsaw rebuild, so I appreciate any help. Can
anybody advise if they believe this is normal or abnormal?
#Post#: 82279--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: jmester Date: April 22, 2018, 7:41 pm
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Do you have the seal down in the groove on the engine pan? It
looks to me that once you install the bolts and tighten the
cylinder down in will pull the seal down into the engine pan.
The seal is a tight fit.
#Post#: 82280--------------------------------------------------
Re: Stihl MS291 (2014) Rebuild
By: BlackPlague Date: April 22, 2018, 8:17 pm
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Yeah, you're right. Once I tightened the bolts down, the oil
seals closed up that gap.
I don't have a vacuum/pressure tester. Hoping there's an
automotive one I can get on loan from an auto parts store.
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