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low rpms on 25 kohler

Discussion in 'Mechanic and Repair' started by S&H Lawn Care Inc, May 12, 2004.

  1. S&H Lawn Care Inc

    S&H Lawn Care Inc LawnSite Member
    from va
    Posts: 21

    I have a 2002 62" z-master all of the sudden it seems to have lost engine rpm, I have checked the cable,air filter and other obvious things. Any idea what could cause an engine to slow? I have made no adjustments yet, I just want to see if anyone has had this problem first.
    Thanks alot
  2. fixer67

    fixer67 LawnSite Silver Member
    Posts: 2,100

    Make sure BOTH plugs are firing. That would be the first thing I would do.
  3. ducky1

    ducky1 LawnSite Senior Member
    Posts: 252

    throttle linkage fell off?
  4. steve225

    steve225 LawnSite Member
    Posts: 123

    check plugs and air cleaner
  5. metro-hp_48

    metro-hp_48 LawnSite Senior Member
    from TN
    Posts: 874

    I 2nd that! Man, I could have saved alot of time (and wondering).

    Atleast if mine does it again, I'll know.
  6. S&H Lawn Care Inc

    S&H Lawn Care Inc LawnSite Member
    from va
    Posts: 21

    Thanks alot I will try it when I get home and let you know how it turns out. Uncle Sam has me floating around in the ocean for a few days and I dont want to ask one of the guys to check anything if you know what I mean.
  7. VegetiveSteam

    VegetiveSteam LawnSite Senior Member
    Posts: 297

    Beyond making sure both plugs are firing make sure both cylinders are running. You could have ignition on a cylinder and yet that cylinder isn't firing. If you do find only one cylinder is firing check for broken or bent pushrods. Also check for a possible leaking intake gasket on the side that isn't firing.
  8. S&H Lawn Care Inc

    S&H Lawn Care Inc LawnSite Member
    from va
    Posts: 21

    I just adjusted the screw a little and she is mowing her butt off I know I am lower than the 3500 rpm or whatever it is. By the way this should probably be a new thread but how do you check the timing is it anything like a car?

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