Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

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Craftsman riding mower model 917.270921 put on a new battery still had to jumpstart got it running checked for charging 14volts to battery let it run for an hour runs pretty good but when i turn it off and try to start it again it wont even crank! checked all connections they are CLEAN AND TIGHT no broken wires and I am thinking valves are out of adjustment but no backfires or anything other than just will not restart without a jumpstart?

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  • ohgr8one2001 Feb 23, 2009

    just from battery to battery

  • Anonymous Feb 24, 2009

    ok took battery out and cleaned all connections tried to start nothing!!! so i jumped it again from positive to positive then negitive to negitive let it run 20 min shut it off then tried to restart with no jumper cable, now i get the seloniod clicking rapidly no start also when i touch positive from jump battery to starter it does start with key on.checked when running I am getting 14.7 volts to battery.

  • Anonymous Mar 31, 2009

    placed new battery still had to jump it told it was starter rebuilt starter still wont start without jump checked all connections and wiresthey were all good also seems to turn over slow. 17.5 hp craftsman 42"cut mdl 917.273370

  • Anonymous Mar 24, 2014

    Mower will not turn over after many tries. Then if I let it sit for 1/2 hour it turns over and starts. Battery is new



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On the exhaust valve there is a compression release, when it is not running it rotates around and holds the exhaust valve open just a little bit and after it starts centrifugal force of the cam shaft spinning causes this compression release to rotate and the exhaust valve is allowed to shut all the way. Knowing that we must properly set this valve because if it is to loose the compression release will not work and your starter and stock battery just don't have enough power to do it and if it is to tight it will not shut all the way and will be lacking power and burn out the valve face with time.

Posted on May 18, 2016

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What method are you jump starting? Are you putting clamps from jump battery on the posts of the battery or grounding the jump battery and then touching the + cable to the starter terminal?

Posted on Feb 23, 2009


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