Author Topic: Stihl MS291 (2014) Rebuild  (Read 412 times)

0 Members and 0 Guests are viewing this topic.

Offline BlackPlague

  • 3 cube
  • *
  • Posts: 7
  • Karma: 1
Stihl MS291 (2014) Rebuild
« on: March 27, 2018, 07:41:53 pm »
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.

Share on Facebook Share on Twitter


Offline DNX800

  • 4 cube
  • **
  • Posts: 36
  • Karma: 14
Re: Stihl MS291 (2014) Rebuild
« Reply #1 on: March 28, 2018, 05:52:02 am »
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.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2055
  • Karma: 157
  • Location: MD
Re: Stihl MS291 (2014) Rebuild
« Reply #2 on: March 28, 2018, 06:38:38 am »
So what happen to cause the failure? Lean carb setting, air leak etc.
FEAR NO TREE. FEAR GOD.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2055
  • Karma: 157
  • Location: MD
Re: Stihl MS291 (2014) Rebuild
« Reply #3 on: March 28, 2018, 06:42:23 am »
FEAR NO TREE. FEAR GOD.

Offline BlackPlague

  • 3 cube
  • *
  • Posts: 7
  • Karma: 1
Re: Stihl MS291 (2014) Rebuild
« Reply #4 on: March 28, 2018, 09:51:57 am »
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.

Yes, you're right. This saw has the newer version.

Thanks for the part #. That's great!

Offline Nathaniel Vansickle

  • Piped Saw
  • *****
  • Posts: 468
  • Karma: 92
  • Location: Newcomerstown ,Ohio
Re: Stihl MS291 (2014) Rebuild
« Reply #5 on: March 28, 2018, 09:53:35 am »
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
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


Offline BlackPlague

  • 3 cube
  • *
  • Posts: 7
  • Karma: 1
Re: Stihl MS291 (2014) Rebuild
« Reply #6 on: March 28, 2018, 09:55:46 am »
So what happen to cause the failure? Lean carb setting, air leak etc.

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.

Offline BlackPlague

  • 3 cube
  • *
  • Posts: 7
  • Karma: 1
Re: Stihl MS291 (2014) Rebuild
« Reply #7 on: April 22, 2018, 12:11:48 pm »
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?

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2055
  • Karma: 157
  • Location: MD
Re: Stihl MS291 (2014) Rebuild
« Reply #8 on: April 22, 2018, 08:41:39 pm »
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.
FEAR NO TREE. FEAR GOD.

Offline BlackPlague

  • 3 cube
  • *
  • Posts: 7
  • Karma: 1
Re: Stihl MS291 (2014) Rebuild
« Reply #9 on: April 22, 2018, 09:17:13 pm »
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.

 

Related Topics

  Subject / Started by Replies Last post
19 Replies
368 Views
Last post December 10, 2013, 08:38:12 pm
by jmester
394 Rebuild and BB

Started by alsled « 1 2 ... 5 6 » Husqvarna

51 Replies
867 Views
Last post June 13, 2014, 10:49:39 pm
by KilliansRedLeo
16 Replies
431 Views
Last post February 02, 2014, 04:33:10 pm
by KilliansRedLeo
1 Replies
290 Views
Last post September 05, 2014, 05:54:49 pm
by malty
3 Replies
154 Views
Last post February 14, 2015, 02:00:37 am
by 660magnum
2 Replies
131 Views
Last post February 15, 2015, 03:08:29 pm
by wild262
6 Replies
208 Views
Last post May 17, 2015, 09:33:57 am
by Cut4fun .
5 Replies
379 Views
Last post April 04, 2016, 06:01:17 am
by Al Smith
7 Replies
252 Views
Last post March 29, 2017, 01:03:44 pm
by EHP
0 Replies
158 Views
Last post May 12, 2017, 10:37:55 pm
by TraceDoty