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1 plug getting lean.

Discussion in 'Mechanic and Repair' started by metro-hp_48, Mar 28, 2004.

  1. metro-hp_48

    metro-hp_48 LawnSite Senior Member
    from TN
    Messages: 874

    Weird. Went to engage my blades, and would never get up to speed. Tach under load was 3250. (and took awhile to get there) Stays @ 3650 normally. Had to check my spindles (greased the tension arm with the spring off) Spindles turn freely, as do the pulleys, too. hmmm.
    Had just put in plugs less than an hour ago. The plug on the discharge side was showing signs of running way too lean. Put in the old plugs, (just incase the gap was wrong (searched for the gap setting here, and never found it. Guessed it was .030)and let it run less than a min. and the same side is leaning out. Haven't
    investigated any further, yet.
    Only 1 carb., so I guess it would have to be in the intake gasket, or intake valve. Starts good, and runs good. (gets to 3650 with no load, but losing power somewhere along the way. Off to check it out.
    ( 17 HP KAW FH500V)
  2. metro-hp_48

    metro-hp_48 LawnSite Senior Member
    from TN
    Messages: 874

    The 2 nuts that hold the air box/carb on were loose, and no doubt sucking much air. But the one plugged leaned out, after I had tightened it up. Hope the valves are ok.
    What would be the odds of needing to adj. the RPMs, after it running with a lose carb.?
    No prob. to adjust, but hate to if there is still a prob. Off to check it out again....should have cooled down by now. lol

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