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  #1  
Old 09-01-2013, 10:39 PM
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LawnMowerMan LawnMowerMan is offline
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Default K Series compression ??

Whats the normal dry/wet compression for a 14 hp K-321 Kohler engine?
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Old 09-01-2013, 11:09 PM
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Kinda non existent, because it has a compression release.
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Old 09-02-2013, 06:19 AM
R Bedell R Bedell is offline
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As CAD stated, as per the K Series Service Manual, page 4.3....
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File Type: jpg Comp Test.jpg (20.1 KB, 88 views)
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Old 09-02-2013, 11:13 AM
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from what I've seen doing comp tests. 85-95. but as the others have stated it really don't mean much because of the comp release. crankcase psi is the preferred method using a water manometer. the Kohler manuals give you directions to make one cheap. the majority of the heavy diesel engine manufacturers use crankcase psi as a tool to determine engine condition.
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Old 09-02-2013, 05:48 PM
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If the engine is out of the tractor and spun backwards the compression release does not work correct?
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Old 09-02-2013, 06:03 PM
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correct, but you would be sucking intake through the muffler which could be removed. not sure if that will tell you what you want to know because of intake and exhaust opening and closing would be backwards. filling the cylinder efficiently is part of compression. if you are going through all that trouble take the cam cover off and unhook the spring on the comp release. just have a good starter to spin it over a starter/gen or a kohler ring gear won't do it .
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