Kohler Comand Pro CH1000 Service Manual page 122

Section 10
Reassembly
Assemble Cylinder Heads
Prior to installation, lubricate all components with
engine oil, paying particular att ention to the lip of the
valve stem seal, valve stems, and valve guides. Install
the following items in the order listed below using a
valve spring compressor. See Figures 10-45 and 10-46.
• Intake and exhaust valves
• Valve spring retainers
• Valve springs
• Valve spring keepers
• Valve stem seals
Figure 10-45. Valve Components.
Figure 10-46. Installing Valves with Valve Spring
Compressor.
Install Cylinder Heads
1. Check to make sure there are no nicks or burrs
on the sealing surfaces of the cylinder head or the
crankcase.
2. Check that the dowel pins are in place in the two
lower locations, and install a new cylinder head
gasket, (printed side up). See Figure 10-47.
10.12
Valve
Spring
Retainer
Keepers
Figure 10-47. Installing New Head Gaskets.
NOTE: Match the numbers embossed on the cylinder
heads and crankcase. See Figure 10-43.
3. Install the cylinder head. Make sure the head is
fl at on the gasket and dowel pins. Install a fl at
washer on the screws in locations 1 and 3. Install
the spacer followed by a fl at washer on the screw
in location 5. See Figures 10-48 and 10-50. Start
the fi ve hex fl ange screws.
Washer
Locations
Figure 10-48. Washers and Spacer Locations.
4. Torque the hex fl ange screws in two stages;
fi rst to 22.6 N·m (200 in. lb.), fi nally to 45.2 N·m
(400 in. lb.), following the sequence in Figure
10-50.
5. Repeat the procedure for the opposite cylinder.
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