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Gravely 260 Getting hot.

Discussion in 'Lawn Mowing' started by john11139, Jun 30, 2014.

  1. john11139

    john11139 LawnSite Member
    Posts: 20

    I have a Gravely 260, with a Kawasaki 27 HP water cooled engine. Ever since I have had it (not new) the temp light comes on after about 15 min of mowing. I have replaced the temp sender but still happens. There is no thermostat in it (previous owner removed it) It does not boil over. I checked the radiator with a inferred thermometer and it reads about 180 and the block shows about 240-250. Could the water pump be bad? I don't think the radiator is plugged. Any suggestions?
  2. whiffyspark

    whiffyspark LawnSite Fanatic
    Posts: 6,112

    Yeah put a thermostat in it for one.

    How many hours on it?
    Posted via Mobile Device
  3. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,206

    Is it dfi?
    Posted via Mobile Device
  4. john11139

    john11139 LawnSite Member
    Posts: 20

    it has around 2400 hours.
  5. retrodog

    retrodog LawnSite Silver Member
    Posts: 2,421

    I have learned that everyone with a radiator on their mower should have a radiator clean out toolÂ…they are never clean until you do so. Do that first and foremost and properly clean it. If any of the fins are bent down from power washer, try to bend them all back so it can have proper air flow. This is extremely important with lc motors...
  6. StanWilhite

    StanWilhite LawnSite Silver Member
    Posts: 2,092

  7. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Posts: 8,896

    2400 hours?

    Say as little as possible and sell that sucker.
  8. herler

    herler LawnSite Fanatic
    Posts: 5,144

    I would back flush and fill it for one, anything with a ton of hours that has never seen a proper back flush is likely to have corrosion and dirt in the water system getting in the way of progress. A nice, proper flush of the system, then re-fill with a fresh 50-50 mix.

    And I would put a thermostat in it.
  9. StanWilhite

    StanWilhite LawnSite Silver Member
    Posts: 2,092

    Read the instructions on the container...it's there in black and white. That way you don't get bad info.:drinkup:
  10. herler

    herler LawnSite Fanatic
    Posts: 5,144

    Ethylene Glycol and water always mix the same way.

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