Kohler — Valve Adjustment
Adjustments · Engine valves
From a Kohler service manual covering: 10C, 10CC, 10CFC, 10CFZ, 12C, 12CFC, 12CFZ, 40CZ, CZ/12-Lead. Check it applies to your exact model before use.
Applies to: Kohler 10C, Kohler 12C, Ford VSG-411 (10 kW) / VSG-413 (12 kW) engine
Before you start
- Do not rotate crankshaft counterclockwise.
Procedure
- Remove rocker arm cover and oil breather cap.
- Rotate crankshaft clockwise until No.1 at TDC compression.
- Insert feeler gauge between rocker arm and exhaust valve; adjust.
- Repeat for intake valve.
- Rotate crankshaft 180 degrees clockwise; set No.2.
- Rotate 180 degrees; set No.4.
- Rotate 180 degrees; set No.3.
- Install rocker arm cover; torque screws 3-4 ft lbs (4-5 Nm).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake 0.009 in. (0.22 mm) cold
- Exhaust 0.013 in. (0.32 mm) cold
- Rocker arm cover screws 3-4 ft lbs (4-5 Nm)
Full service-parts list: Kohler 12C →
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.