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  #1  
Old 03-20-2009, 06:26 AM
fourbybud fourbybud is offline
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Stihl BR400 died

Hey guys, yesterday I was using my old and faithful BR400 backpack blower when I felt a big thud, like I backed into something but didn't, and it lost all power and just spits and sputters. It has spark, 120 lbs of compression, and seems to be getting fuel because it smokes and backfires out the exhuast.
Anyone have any ideas on what might have happend?

Thanks in advance.
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  #2  
Old 03-20-2009, 07:21 AM
cutitright cutitright is offline
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Quote:
Originally Posted by fourbybud View Post
Hey guys, yesterday I was using my old and faithful BR400 backpack blower when I felt a big thud, like I backed into something but didn't, and it lost all power and just spits and sputters. It has spark, 120 lbs of compression, and seems to be getting fuel because it smokes and backfires out the exhuast.
Anyone have any ideas on what might have happend?

Thanks in advance.
I have a BR-400 and experienced the same problem last year. I found the small screen, in the end of the exhaust pipe on the muffler had become plugged up with carbon. This carbon will not allow the engine to breath and run properly or not run at all. The screen on mine was held on by a spring clip that can be removed with pliers. Once the clip is off, remove the screen and clean it using a small wire brush and solvent. Once it is cleaned and reinstalled, the unit ran like new! This suggestion may or may not be the problem. Just my experience with this blower! Good luck!
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  #3  
Old 03-20-2009, 08:07 AM
twotone twotone is offline
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something get lodged in the blower fan?
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  #4  
Old 03-20-2009, 08:21 AM
kaferhaus kaferhaus is offline
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Likely the exhaust, or the ignition module (just because you have spark doesn't mean it's good)

I'm betting it's carboned up.
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  #5  
Old 03-20-2009, 06:37 PM
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jkilov jkilov is offline
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Quote:
Originally Posted by twotone View Post
something get lodged in the blower fan?
And caused the flywheel/fan key to shear?
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  #6  
Old 03-20-2009, 07:20 PM
fourbybud fourbybud is offline
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Well I took it apart after work only to have both piston rings come out in two pieces!!!!
Looks like it might be time to go shopping. I liked the BR400 on power what do you think I should go for next?
I already own other Stihl and Tanaka equipment so I would like to stay with one of them.
Thanks for all the suggestions.
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  #7  
Old 03-20-2009, 07:23 PM
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mowerbrad mowerbrad is offline
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If you are looking for something within the same power range, I would suggest the stihl BR420. If you want to get more power go for the BR600.
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  #8  
Old 03-20-2009, 07:48 PM
topsites topsites is offline
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Spend the extra and get the 600, don't look back wishing.
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  #9  
Old 03-20-2009, 07:52 PM
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weasel weasel is offline
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I agree with the BR600 we have them and love'em. Fix the 400 when you can for an extra or stand by
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  #10  
Old 03-20-2009, 07:57 PM
fourbybud fourbybud is offline
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Does the BR600 really have that much power? Is there anything to watch out for on them?
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