Kohler KD62V12 — Checking and setting valve clearance
Adjustments · Rocker arms / valve clearance
For the Kohler KD62V12, from the Kohler service manual.
Applies to: Kohler KD62V12, Kohler KD62V12 engine
Before you start
- Hot surfaces - wait until engine has cooled
- Risk of injuries if valve springs are under stress
Procedure
- Remove cylinder head covers and install turning device.
- Rotate crankshaft with turning device to index 1.
- Verify scavenging TDC on A1; if not, turn 360 degrees and verify again.
- Rotate to index 2; set clearance for cylinders A5, A6, B5.
- Rotate to index 4; set clearance for cylinders A3, B1, B3.
- Rotate to index 2 second time (2+360); set A1, A2, B2.
- Rotate to index 4 second time (4+360); set A4, B4, B6.
- Insert feeler gauge between rocker ball cap and valve bridge to check clearance.
- Loosen locknut and turn adjusting screw with Allen key until gauge shows slight resistance.
- Tighten locknut while holding set screw; re-check and mark cylinder.
- Repeat for rocker arm exhaust.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet valve clearance nominal 0.5 mm (+0.1/0)
- Outlet valve clearance nominal 1 mm (+0.1/0)
- Locknut torque 40 Nm
Full service-parts list: Kohler KD62V12 →
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.