Service and Repairs

100
Reassembly
KohlerEngines.com 17 690 01 Rev. L
Install Push Rods and Rocker Arms
NOTE: Push rods should always be installed in original
location.
1. Identify proper position of each push rod. Dip ends
of push rods in engine oil and install them in their
respective locations, seating each into tappet socket.
2. 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.).
3. Assemble rocker arms, adjusters, and locknuts onto
studs and push rods. Finger tighten rocker arm pivot
jam locknuts.
4. Adjust valve tappet clearance as follows:
a. Make sure piston is still at top of compression
stroke.
b. Insert a fl at feeler gauge between rocker arm and
valve stem. Recommended valve to rocker arm
clearance for both intake and exhaust is 0.076-
0.127 mm (0.003-0.005 in.)(Cold).
c. Adjust clearance as required by loosening locknut
and turning adjuster.
Turn clockwise to decrease clearance.
Turn counterclockwise to increase clearance.
d. Hold adjuster from turning and tighten locknut.
Torque locknut to 10 N·m (89 in. lb.).
e. Recheck clearance is correct.
5. Set gap of a new spark plug to 0.76 mm (0.030 in.).
6. Install spark plug in cylinder head and torque to
27 N·m (20 ft. lb.).
Install Valve Cover
CH245/CH255 Valve Cover Torque Sequence
1
2
4
3
CH245/CH255 Valve Cover with RTV
A
A RTV Sealant
CH245/CH255
NOTE: Always use fresh sealant. Using outdated
sealant can result in leakage. Refer to Tools and
Aids for important information on sealant
dispenser.
NOTE: To ensure proper adhesion of sealant to both
surfaces, perform step 3 immediately (5 minutes
maximum) after application of RTV.
1. Prepare sealing surface of cylinder head and valve
cover.
2. Apply a 1.5 mm (1/16 in.) bead of sealant to valve
cover as shown.
3. Position cover on cylinder head and start mounting
screws.
4. Torque screws to 8.0 N·m (71 in. lb.) using sequence
shown.
CH260-CH440
1. Install a new valve cover gasket onto valve cover.
2. Position valve cover/gasket assembly on head.
Install screw and torque to 10 N·m (89 in. lb.).