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Bent pushrod on inlet valve,husqvarna rideon mower

What could cause the inlet valve pushrod to keep bending,it is a kawasaki 15hp engine,valve does not appear to be sticking as you can push it in by hand. does anyone have any idea what it could be ?

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It is one of two problems - your engine uses a cam with a plastic gear - this gear has a tendency to move - it will probably need replacement . there is also a chance that the valve seat is coming loose (overhead valve ) which keeps the valve open - check the distance of the valve stems to make sure they are both out the same distance if they are not then when you put a new pushrod in and adjust it the valve will be pushed too far and hit the piston in turn bending the pushrod

Posted on Oct 17, 2008

  • enginedoc Oct 17, 2008

    almost forgot ; theres a chance that the valve guide itself has moved outwards bottoming out the valve - make sure both sides are extended both the same amount

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