Recent content by NxtGoRnd

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    Exmark Lazer Z Kohler CH740 problems

    Installed new lifter still getting same results swapped the rocker pushrod and lifter from a different valve same results. I believe I have a worn cam lobe on #2 exhaust man wish I had started there LOL. As said first post cognitive abilities have definitely gone down hill, thinking I will put...
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    Exmark Lazer Z Kohler CH740 problems

    The other intakes are moving the same the other exhaust seems fine I pulled the lifter and the cam does not look very worn. Saying that I know it is not proper measurement the plug on #1 side looks normal and the #2 side is black. I think the cam is okay. I did torque to 160 inch pounds.
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    Exmark Lazer Z Kohler CH740 problems

    As VegetiveSteam correctly suggested exhaust restriction. I turned it over with the valve covers off and #2 Cylinder head exhaust valve was not moving so yep restriction. I tightened the rocker bolt another 10 in lbs and when I turned it over the exhaust valve was opening. All bolts including...
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    Exmark Lazer Z Kohler CH740 problems

    I actually put new old stock replacements then went to 25-707-03-S Came with Kohler sticker said genuine Kohler parts. I removed the old dsam and followed directions it did have the ground wire and disconnect 12 volt wire. Thanks for the help for sure and and you are correct on exhaust...
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    Exmark Lazer Z Kohler CH740 problems

    The factory gaskets were in great shape i found no evidence of any leaks, I installed the new gaskets it has same condition. I did not lap I have taken the engine back out again and will go back over everything. I did hook a remote to starter while it was on the bench this morning and turned it...
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    Exmark Lazer Z Kohler CH740 problems

    I will check that out thanks! I have downloaded the service manual and parts manual for the CH740. Thanks again.
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    Exmark Lazer Z Kohler CH740 problems

    Thanks for the reply it has hydraulic lifters a new carb and two tanks of ethanol free gas couple weeks old. Have wondered if it could be a lifter and checked the push rods they are straight and undamaged. Sticking lifter still a possibility. compression and Leak down test should rule out head...
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    Exmark Lazer Z Kohler CH740 problems

    Hi everyone thanks in advance for any help. I have a Exmark Lazer Z with Kohler Command SP27 model CH740s Spec PS-CH740-0045 serial 3416109201. Sometime around 2015 it started blowing oil and skipping so I put it in my building and started to use and older mower I had. I had been through cancer...
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