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kohler hard to start when hot need help

Discussion in 'Mechanic and Repair' started by milo, Sep 8, 2010.

  1. milo

    milo LawnSite Bronze Member
    Messages: 1,303

    ok 27hp kohler on lazer z. first start when cold fires right up fast. if i cut a lawn and shut it off and start it 5 minutes later starts great too but i load up and go to next yard and go to start it and cranks for like 5 to 10 seconds before starting.... anyone have a clue? i heard change oil and did that and will see tomorrow but also heard probally the coils going bad. dosent this engine have 2 coils? and whats the chance they both go bad same time or is it a single coil? any info great.
  2. billslawn89

    billslawn89 LawnSite Bronze Member
    Messages: 1,365

    ya! i would like to know too, same with my NEW scag turf tiger, crank, crank, crank when engine it hot in the afternoon. i want my liquid cooled kawi back.
  3. milo

    milo LawnSite Bronze Member
    Messages: 1,303

    i just was reading it could be a sheered flywheel key????? can i tell this by just taking off the cover or do i need to pull the flywheel to see this??
  4. flatlander42

    flatlander42 LawnSite Silver Member
    Messages: 2,239

    My 27hp cranks for quite a while all the time. Sometimes it seems like a long time. (close to 5-10 seconds too)
  5. SkinnyVinny

    SkinnyVinny LawnSite Senior Member
    Messages: 262

    same here... I started a thread like this a few days ago but nobody seems to give a helpful answer.. maybe you will have some luck with someone, I will keep checking back..
  6. MileHigh

    MileHigh LawnSite Silver Member
    Messages: 2,466

    I have same motor on my lazer...

    Does the same thing as yours...

    First start of the day...I choke with throttle all the way down and starts right up.
    Rest of the day if warm...I have throttle up 65% or so up and it seems to start much better.

    Also...I always shut down at at half throttle...otherwise they are prone to backfires.
  7. soloscaperman

    soloscaperman LawnSite Gold Member
    Messages: 3,045

    I have the same mower. Once it's warm I notice when turning the key to start it it is very SENSITVE. Just flick the key fast and it should start .5 seconds. Keep the throttle and choke all the way down you don't need it unless the mower has been sitting for more then 3-6 hours. When it's cold choke all the way and have have the throttle at 2% then when it starts throw the choke down and put the throttle at 25%-50%
  8. milo

    milo LawnSite Bronze Member
    Messages: 1,303

    lol... i will try it though i am thinking its bad coils.
    PEOPLE LETS FIGURE THIS ONE OUT alot of us seem to have it:dancing:
  9. soloscaperman

    soloscaperman LawnSite Gold Member
    Messages: 3,045

    It should work. I noticed you can easily flood it if you hold the key for more then a second then after that it's hard to start. Just turn the key real fast.
  10. Turf Dawg

    Turf Dawg LawnSite Gold Member
    Messages: 3,719

    Heck, I thought this was just normal for Kohlers because everyone I ever had does this.

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