Kohler KD27V12 — Checking and setting the valve clearance
Adjustments · Cylinder head and valves
For the Kohler KD27V12, from the Kohler service manual.
Applies to: Kohler KD27V12, Kohler KD27V12 engine
Procedure
- Fit the turning device [10123791].
- Turn crankshaft until cylinder 1 is in TDC position (cylinder 6 valves overlap).
- Set/check inlet valves 1-4-8-9.
- Set/check outlet valves 1-2-3-9-11-12.
- If play does not agree, unscrew lock nut and correct the setting.
- Tighten the lock nut with 45 Nm, holding the adjusting screw with the Allen key.
- Check the setting again.
- Turn the crankshaft 310° in direction of rotation; set/check inlet valves 2-3-10-11-12 and outlet valves 5-6-7-10.
- Turn the crankshaft 230° (TDC +540°); set/check inlet valves 5-6-7 and outlet valves 4-8.
- Install cylinder head cover with inspected, undamaged seals.
- Remove the turning device.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet valve 0.5 mm (0.02 in)
- Outlet valve 0.6 mm (0.024 in)
- Setting temperature between 15°C and 40°C (59°F and 104°F)
- Lock nut 45 Nm (33 ft lb)
Full service-parts list: Kohler KD27V12 →
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.