Kohler Command PRO ECV630 Service Manual page 107

Install Flywheel
Damaging Crankshaft and Flywheel Can
cause personal injury.
Using improper procedures can lead to broken
fragments. Broken fragments could be thrown from
engine. Always observe and use precautions and
procedures when installing flywheel.
Flywheel Components
A
B
C
A Flywheel Fan
C Stator
24 690 02 Rev. D
CAUTION
D
B Flywheel
D Backing Plate
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NOTE: Before installing flywheel, make sure crankshaft
taper and flywheel hub are clean, dry, and
completely free of any lubricants. Presence of
lubricants can cause flywheel to be over
stressed and damaged when screw is torqued to
specifications.
NOTE: Make sure flywheel key is installed properly in
keyway. Flywheel can become cracked or
damaged if key is not properly installed.
1. Install woodruff key into keyway of crankshaft. Make
sure that key is properly seated and parallel with
shaft taper.
2. Install flywheel onto crankshaft being careful not to
shift woodruff key.
3. Install screw and washer.
4. Use a flywheel strap wrench or holding tool to hold
flywheel. Torque screw securing flywheel to
crankshaft to 71.6 N·m (52.8 ft. lb.).
Install Fan
NOTE: Position locating tabs on back of fan into locating
holes of flywheel.
1. Install fan onto flywheel using screws (engines with
plastic grass screen). For engines with a metal grass
screen, leave it loosely assembled.
2. Torque screws to 9.9 N·m (88 in. lb.).
Install Hydraulic Lifters
NOTE: Hydraulic lifters should always be installed in
same position as before disassembly. Exhaust
lifters are located on output shaft (oil pan) side
of engine while intake lifters are located on fan
side of engine. Cylinder numbers are embossed
on top of crankcase and each cylinder head.
1. See Servicing Hydraulic Lifters in Disassembly/
Inspection and Service.
2. Apply camshaft lubricant to bottom surface of each
lifter. Lubricate hydraulic lifters and lifter bores in
crankcase with engine oil.
3. Note mark or tag identifying hydraulic lifters as either
intake or exhaust and cylinder 1 or 2. Install
hydraulic lifters into their appropriate locations in
crankcase. Do not use a magnet.
4. If breather reeds and stops were removed from
crankcase, reinstall them at this time and secure
with screw. Torque screw to 4.0 N·m (35 in. lb.).
Reassembly
107