B&S Engine help please... Hit a pipe with 21"

Discussion in 'Lawn Mowing' started by boxoffire, Dec 13, 2004.

  1. boxoffire

    boxoffire LawnSite Member
    Messages: 169

    doing this cleanup over the weekend. Engine cut off immediately but started afterwards with much smoke at startup. Ran it about another 10 minutes. Took it off trailer just now and tested again and mucho smoke at startup and oil coming out of the muffler area. Is it toast? $99 Murray from Walmart. You need one of these just for these type cleanups, if you're gonna do'em. :help:
  2. beransfixitinc

    beransfixitinc LawnSite Senior Member
    Messages: 592

    If you were lucky enough not to bend the crankshaft, you almost certainly bent the blade enough that it will be out of balance. Also, you probably sheared the flywheel key and now have an engine out of time. Unless you are confident that you could do the work to repair it yourself, you'd be better off junking it and purchasing another one. A average shop charge to replace the key and blade would probably run you around $60. But on that little engine (I'm guessing 3.75hp sprint or classic) you probably bent the crank too much to use it anyway.

    Buy a new one.. and check in front of you next time.
  3. richard coffman

    richard coffman LawnSite Senior Member
    Messages: 341

    Mabe you can take it back to walmart for a replacment. i'f not, sounds like you didn't shear any of the split keys that are used for the crankshaft, and that's a problem. I wouldn't think it would be worth your time taking the engine apart and fixing it. possable broken ring(s), bent valve,valve stem. in my opinion, get it replaced, if not, use that one for parts and buy another. I'd go with one that's got a blade clutch. Bet your blade is probably bent and or out of allignment. figure your time or money isn't worth putting into it. Just my 2 cents.


    Richard/Owner :D :D ;) ;) :D
  4. boxoffire

    boxoffire LawnSite Member
    Messages: 169

    It really doesn't appear that anything is really bent. Mower is steady on startup and sounds normal. Just the smoke out the muffler and of coarse black oil coming out of it as well. Guess I'll junk it though. Thanks.
  5. PTP

    PTP LawnSite Bronze Member
    from Tulsa
    Messages: 1,398

    If you are planning on buying the same model again, I recommend keeping the old one for parts. If the new one lasts long enough, you are bound to need wheels, cables and who knows what misc. part.
  6. out4now

    out4now LawnSite Bronze Member
    from AZ
    Messages: 1,796

    Junk it and buy another.
  7. Travis Followell

    Travis Followell LawnSite Silver Member
    from KY
    Messages: 2,206

    Definately not worth fixing. There no telling whats damaged inside the moter. probibly a bent valve stem or broken ring or something. There's got to be something major for oil to leak out the muffles. Those little engines are only worth fixing if you know how to do it yourself and have another for parts.
  8. Carolina Cutter

    Carolina Cutter LawnSite Senior Member
    Messages: 984

    I got this one.............

    Bet you tilted it when you went to look under it after the hit, didn't you? I have tilted mine the wrong way before and the same thing happened to me. Smoked like a misqito fogger. It will go away. What happened most likely is that you tilted it toward the muffler and got oil in the muffler. THat explains the oil leak and the smoke. Once all the oil burns out it will stop.
  9. Smalltimer1

    Smalltimer1 LawnSite Bronze Member
    Messages: 1,223

    I'm collecting parts mowers for the spring, shoot me an email if you're close to Raleigh and I'll come pick it up.
  10. ztoro

    ztoro LawnSite Senior Member
    Messages: 735

    I agree with this comment. I tilted a powersprayer way over and when I started it it look like a smoke machine... Let it run for awhile and kept checking the oil.. Went away after awhile.....

    Looks like some oil go into the wrong place....

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