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Kohler — CHECKS AND OVERHAUL

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

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Procedure

  1. Head - 2.Tappets - 3.Valves - 4.Seats - 5.Guides - 6.Seals -
  2. Lower washers - 8.Springs - 9.Top washers - 10.Valve locking
  3. Push rods - 15.Cover tube - 16.O-ring - 17.Camshaft.

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.