Kohler — Install Cylinder Heads
Repair & overhaul
From a Kohler service manual covering: LH630, LH685, LH750, LH760. Check it applies to your exact model before use.
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Procedure
- Check sealing surfaces for nicks or burrs.
- Rotate crankshaft to position #1 piston at TDC compression.
- Install new cylinder head gasket; match numbers on head and crankcase.
- Install #1 cylinder head onto #1 side mounting studs.
- Install plain washer and hex flange nut on each stud.
- Torque four nuts in two steps: 16.9 N·m then 33.9 N·m (150 then 300 in. lb.) in sequence.
- Repeat for #2 cylinder head.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head fasteners 16.9, 33.9 N·m (150, 300 in. lb.)
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.