Kohler — connecting rod must be straightened.

For these Kohler models: 25LD330-2, 25LD425-2.

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Procedure

1. Remove the plugs “A” from the oil passages (fig.25).
2. Use an appropriately shaped steel punch to clean the inside of
3. When the oil passages and traps have been throughly cleaned,

Source: manual:Work Shop Manual GR 25_330_425 matr 1-5302-607.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.