Older miller bobcat 250
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  1. #1
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    Older miller bobcat 250

    Hey guys, i found a miller bobcat 250 with kolder engine with 1700 hrs, needs some new parts. The seller wants 1800 for it. Now question for million buck, any common issues? I say 800 bucks would be more senseable. I am all ears. Also looking at a lincoln 300g ranger 9 with super low hrs like 6 hrs. He wants 3800.
    I
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  2. #2
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    Re: Older miller bobcat 250

    Sounds high for hours and needing “parts”

  3. #3
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    Re: Older miller bobcat 250

    Yeah, its a 15-20 yrs old thats why i want ask ya. . just spoke to the other guy with Lincoln, he dont use it enough.
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  4. #4
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    Re: Older miller bobcat 250

    Check Craig’s list

  5. #5
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    Re: Older miller bobcat 250

    I've had 5 or 6 trailblazers with Kohler engines and usually sold them at around 1,700 hours or so, and they were always well maintained. Usually, around that time you will see some oil starting to leak somewhere and they will start to rattle a bit. You can tell when these engines are getting loose by how long they continue to spin when you shut them down, that's not necessarly bad if it was well maintained but most of the used ones I see aren't.
    ***********************

    CR

  6. #6
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    Re: Older miller bobcat 250

    Thanks for the advice. Not worth it. Going to look at the ranger9
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  7. #7
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    Re: Older miller bobcat 250

    High hour Kohlers go catastrophic KaBOOM thanks to Kohler fuel pumps.
    Sometimes chunks of rod take the gears out too.

    Kohler Bobcat with hours like that around Rochester - $800 to $1000

    Machines here don't bring money

  8. #8
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    Re: Older miller bobcat 250

    Quote Originally Posted by Bls repair View Post
    Check Craig’s list
    Check the mental hospitals too; since the majority who advertise on Craigs belong in one....

  9. #9
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    Re: Older miller bobcat 250

    Quote Originally Posted by Bonzoo View Post
    Check the mental hospitals too; since the majority who advertise on Craigs belong in one....
    Lol, thats true!! Last time i was checking Craigslist, i had one guy who is short temper comes to try to sell a welder to me, i just walked away.. I just dont care for Craigslist.
    MM215
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  10. #10
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    Re: Older miller bobcat 250

    Quote Originally Posted by Virgil5 View Post
    High hour Kohlers go catastrophic KaBOOM thanks to Kohler fuel pumps.
    Sometimes chunks of rod take the gears out too.

    Kohler Bobcat with hours like that around Rochester - $800 to $1000

    Machines here don't bring money
    Ah i was not aware of that, i thought ocan engine are the worst.
    MM215
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  11. #11
    Join Date
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    ct.
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    Re: Older miller bobcat 250

    Quote Originally Posted by Virgil5 View Post
    High hour Kohlers go catastrophic KaBOOM thanks to Kohler fuel pumps.
    Sometimes chunks of rod take the gears out too.

    Kohler Bobcat with hours like that around Rochester - $800 to $1000

    Machines here don't bring money
    Are we talking about the vacuum operated fuel
    pump? How does fuel pump cause engine to come
    apart? Maybe replacing pump every 1,000 hours
    would prevent self-destruction?
    Miller a/c-d/c Thunderbolt XL
    Millermatic 180
    Purox O/A
    Smith Littletorch O/A
    Hobart Champion Elite

  12. #12
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    Sep 2013
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    central Wis.
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    Re: Older miller bobcat 250

    Bad fuel pump introduces gasoline into the oil. Oil and gasoline is not a good engine lubricant.

  13. #13
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    May 2010
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    ct.
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    Re: Older miller bobcat 250

    Quote Originally Posted by M J D View Post
    Bad fuel pump introduces gasoline into the oil. Oil and gasoline is not a good engine lubricant.
    Makes sense. I notice the schematic in my Hobart manual shows
    an electric fuel pump option. Maybe only for Miller EFI Bobcats?
    Miller a/c-d/c Thunderbolt XL
    Millermatic 180
    Purox O/A
    Smith Littletorch O/A
    Hobart Champion Elite

  14. #14
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    Re: Older miller bobcat 250

    Kohler and onan fuel pumps have been shattering engines since MTBE & Corn squeezins were added to gasoline.

    Onans might be better at destructing, but I caught my CCK before gasoline in the oil got to it.

    Kohlers on the other hand are sneaky. Even the cam operated pumps self perforate and send gas to the oil pan.
    Worst have got to be 321 and 341 blocks. They won't run without a pump, and the dirty bu$tards will blast off within half an hour even though they were fine starting up. I have 4 of them sitting to go to rebuild right now, and they will NOT have Kohler pumps when they are rebuilt.

    Kohler got real cute with those pumps, just like they did when they quit soldering the plug wire to the coil on the K-90 back in the 50s.
    Just like back in the 50s, Kohler denies there is any problem with the K-341.

    Briggs vacuum operated remote pumps and a blocking plate for the fuel pump hole solve the problem.

    Kohler and ITW is a marriage of two sleezeball companies.

  15. #15
    Join Date
    Apr 2008
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    NW ON Canada
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    Re: Older miller bobcat 250

    The Lincoln welders use Kohler engines too. All 225-325 amp gas welders sold today in red or blue or white colour use Kohler motors. I've got a Kohler in my old John Deere mower, it's 16-17 yrs old and runs great.
    Jason
    Lincoln Idealarc 250 stick/tig
    Thermal Dynamics Cutmaster 52
    Miller Bobcat 250
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    Ironworkers Local 720

  16. #16
    Join Date
    Oct 2016
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    countryside of NY
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    Re: Older miller bobcat 250

    My old sears garden tractor got the kohler engine, never had an issue with it (a 1992 model). Now with a cub cadet, no issues so far.
    Virgal, great insight on these engine which i didnt know about the kinds of problems. If i ever get a good deal on either machine, if the engine died on me, it will be replace with brigg sation or better without the fuel pump.. The best gas for ALL small engines is non ethal gas.
    MM215
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