I keep fowling Plugs???

Discussion in 'Mechanic and Repair' started by the.hines, Feb 5, 2008.

  1. the.hines

    the.hines LawnSite Member
    Messages: 126

    Why do I keep having to change out my spark plugs on a brand new cub cadet push mower??? Thing maybe has 5 hours on it changed them twice already???
  2. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029


    You didn't post any model numbers; http://www.lawnsite.com/showthread.php?t=144040

    Check the air filter, The unit could have been flipped over in shipment. This could have let what little oil that was left in the crankcase from the pre-run inspection soak the filter, This could restrict air flow and cause a rich fuel mixture fouling the plug.
  3. newz7151

    newz7151 LawnSite Silver Member
    from Tejas
    Messages: 2,419

    Rob, it most likely has the MTD engine on it and the whole engine should be replaced under warranty. Especially if the problem is in the hard stoned jetting of the carburetor like one we had.
  4. lucforce

    lucforce LawnSite Member
    Messages: 223

    ...plug fowling...

    I didn't know they had wings!

    I couldn't resist.
  5. khouse

    khouse LawnSite Bronze Member
    Messages: 1,465

    Your not running mixed fuel on accident?

    MOW PRO LAWN SERVICE LawnSite Bronze Member
    Messages: 1,568

    Whatz up with the dealer itz new...........
  7. the.hines

    the.hines LawnSite Member
    Messages: 126

    The only thing that I can see on it is. OHV 6.75hp.I couldn't really see anything other the Cubcadet on the engine.Yeah I bought the thing end of year and it has been sitting in the shed until needed. I will be bringing it back but I just wanted to ask if it is something I can take care of...Good, New gas, New plugs, New filters??? Anything else???
  8. khouse

    khouse LawnSite Bronze Member
    Messages: 1,465

    Is the oil level too high?
  9. topsites

    topsites LawnSite Fanatic
    Messages: 21,653

    First check the choke valve inside the carb, pull the air filter off and manually activate the throttle, make sure this piece opens and closes as it should.

    Then, when going to WOT on some machines choke is just past WOT and there may or may not be any way to really tell when running it, so I made red marks with a magic marker on the throttle body where the piece moves that the cable is attached to... This tells me the max WOT setting down below and it is not always exactly the same spot on the upper handle part due to certain cables stretch or sticking or Idk what the problem is but that's just how it is... Also might help to back off WOT via the lever just a tiny bit when operating to make sure you're not choking it at all, that is, if choke is just past WOT watch out for that.
  10. the.hines

    the.hines LawnSite Member
    Messages: 126

    I know the oil level in it is too high... I think I will change it out to be safe... What would you suggest for weight of oil? Anyone got a special brand they like to use?

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