Kohler COMMAND CH18-745 User Manual download pdf (Page 196)

11.11

Section 11

Reassembly

Figure 11-36. Match Numbers on Cylinder Barrel and

Head.

Figure 11-38. Valve Components.

Intake

Valve

Seal

Valve

Keepers

Retainer

Spring

Cap

Figure 11-39. Installing Valves with Valve Spring

Compressor.

Install Cylinder Heads

NOTE: Cylinder heads must be attached with the

original type of mounting hardware, using

either hex. flange screws, or mounting studs

with nuts and washers. The heads are

machined differently for studs than for

screws, so the fastening method cannot be

altered unless the heads are being replaced.

Do not intermix the components.

1. Check to make sure there are no nicks or burrs

on the sealing surfaces of the cylinder head or the

crankcase.

Figure 11-37. Intake Valve Seal Location.

Valve Stem Seals

These engines use valve stem seals on the intake

valves and occasionally on the exhaust valves. Always

use a new seal whenever the valve is removed or if the

seal is deteriorated or damaged in any way. Never

reuse an old seal. Figure 11-37.

Assemble Cylinder Heads

Prior to installation, lubricate all components with

engine oil, paying particular attention 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 11-38 and

11-39.

• Intake and exhaust valves

• Valve spring caps

• Valve springs

• Valve spring retainers

• Valve spring keepers

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Kohler COMMAND CH18-745 User Manual Page 196

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