Kohler — Install Push Rods and Rocker Arms / Adjust Valve Tappet Clearance
Adjustments · Cylinder Head
From a Kohler service manual covering: CH245, CH255, CH260, CH270, CH395, CH440. Check it applies to your exact model before use.
Applies to: Kohler CH260, Kohler CH270, Kohler CH395, Kohler CH440
Procedure
- Dip ends of push rods in engine oil and install in their respective locations, seating each into tappet socket.
- Install push rod guide plate, aligning holes for rocker arm studs. Screw in rocker arm studs and torque to 13.6 N·m (120 in. lb.).
- Assemble rocker arms, adjusters, and locknuts onto studs and push rods; finger tighten rocker arm pivot jam locknuts.
- Make sure piston is at top of compression stroke.
- Insert a flat feeler gauge between rocker arm and valve stem. Clearance for intake and exhaust is 0.076-0.127 mm (0.003-0.005 in.) cold.
- Loosen locknut and turn adjuster to adjust clearance; turn clockwise to decrease, counterclockwise to increase.
- Hold adjuster from turning and tighten locknut. Torque locknut to 10 N·m (89 in. lb.).
- Recheck clearance is correct.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve to rocker arm clearance (cold): 0.076-0.127 mm (0.003-0.005 in.)
- Rocker arm stud torque: 13.6 N·m (120 in. lb.)
- Locknut torque: 10 N·m (89 in. lb.)
Full service-parts list: Kohler CH260 →, Kohler CH270 →, Kohler CH395 →, Kohler CH440 →
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.