Kohler — Cylinder head tightening (KDW 1003 / KDW 1404)
Repair & overhaul
From a Kohler service manual covering: KD 702, KDW 1003, KDW 1404, KDW 702, KDW 702 - 1003 - 1404. Check it applies to your exact model before use.
Applies to: Kohler KDW 1003, Kohler KDW 1404, Kohler KDW 702, Kohler KDW 702 / KDW 1003 / KDW 1404 engine, Kohler KDW702 engine, Kohler KDW1003 engine, Kohler KDW1404 engine
Before you start
- Once correctly tightened the head should not be retightened except if it is disassembled again.
Procedure
- Measure each screw length (normal 89.5÷90.5 mm); replace if it exceeds 92 mm.
- Use a torque wrench with angular tightening device.
- Following the numerical order in the diagram tighten bolts in three phases.
- 1st phase = 50 Nm.
- 2nd phase = rotate wrench 90° clockwise.
- 3rd phase = rotate wrench again 90° clockwise.
Tools required
- Torque wrench with angular tightening device Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 1st phase 50 Nm
- 2nd phase 90°
- 3rd phase 90°
Full service-parts list: Kohler KDW 1003 →
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.