Stihl sh85 hand held blower carb problem

Discussion in 'Mechanic and Repair' started by osr001, Apr 9, 2010.

  1. osr001

    osr001 LawnSite Member
    Posts: 44

    This blower is getting way too much fuel dumped in the carb. I took it apart, used choke cleaner, air to blow out the ports and reset the high and low needles at 1-1/2 turns out. When I first started it back up it ran o.k. for 5 sec. and then same problem. The diaphram looked alright but I`m wondering if there might be a pinhole I can`t see? Gas is spitting out the back of the carb. Fresh gas, right mix. Any Ideas? Thanks
     
  2. rotti1968

    rotti1968 LawnSite Member
    Posts: 169

    bad high speed check valve or accelerator pump , replace the carburetor , part #4229 120 0606 this is the most recent carburetor for that unit lists for $27.20. The check valves are not repairable I see this often and just replace the carburetor.
     
  3. osr001

    osr001 LawnSite Member
    Posts: 44

    Thanks for the info. 27.00 bucks seems like a cheap fix so I`ll give it a try.
     
  4. rotti1968

    rotti1968 LawnSite Member
    Posts: 169

    I agree for 27.00 its not worth the trouble of tearing apart and getting mad when it does not work.Also make sure you check your exhaust screen thats its not plugged, this can give you very close to the same kind of condition sorry forgot to post that last night.
     

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