Kaw 12.5 hp engine problem

Discussion in 'Mechanic and Repair' started by ZaK18, Jun 5, 2006.

  1. ZaK18

    ZaK18 LawnSite Member
    Messages: 188

    One of my main mowers is a 32" exmark metro with the 12.5 kaw...The mower has gotten harder and harder to start over the last few weeks and has been loosing power

    Ive changed the sparkplug, put new fuel/air filter...nothing has helped

    any suggestions what could be causing this ( could the valves need adjusting?)

    Please give any suggestions, I really cant afford to have my main mower in the shop for a month
  2. ProStreetCamaro

    ProStreetCamaro LawnSite Platinum Member
    Messages: 4,278

    Sounds as if the coil is getting weak.
  3. Kilman's

    Kilman's LawnSite Member
    Messages: 45

    sorry but we had the same problem with 2 of our 12.5, ours had compression problems, to make a long story short we replaced thim with 15hp kohler's;)
  4. ProLawns

    ProLawns LawnSite Senior Member
    Messages: 476

    It probably needs a valve job.
  5. J&R Landscaping

    J&R Landscaping LawnSite Fanatic
    Messages: 5,095

    I'd say check the compression but they have comp release on them so it won't help much. How many hours on the engine? Usually around 300-400 hours, they need a valve job.

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