Kohler XT775 [39/56] Disassembly inspection and service

Disassembly/Inspection and Service

14 690 01 Rev. G KohlerEngines.com

Valve Details

Dimension Intake Exhaust

A Seat Angle

90° 90°

B Guide Depth 22.6 mm 20.5 mm

C Guide I.D. 5.500/5.512 mm 5.500/5.512 mm

D Valve Head Diameter 25.875/26.125 mm 23.875/24.125 mm

E Valve Face Angle

45° 45°

F Valve Margin (Min.) 0.80 mm 0.80 mm

G Valve Stem Diameter 5.465/5.480 mm 5.465/5.480 mm

Remove Rocker Arms

Noting orientation, lift rocker arms off rocker studs.

Remove Push Rods

Remove push rods and mark them for reinstallation.

Remove Rocker Studs

Unscrew and remove rocker studs from cylinder head.

Remove Guide Plate

1. Remove guide plate from rocker studs.

2. Note orientation of guide plate (tabs down) for use

during reassembly.

Remove Cylinder Head

1. Remove screws securing cylinder head.

2. Remove cylinder head, noting positioning of dowels.

3. Remove head gasket and discard.

Valve Inspection and Service

Carefully inspect valve mechanism parts. Inspect valve

springs and related hardware for excessive wear or

distortion. Check valves and valve seats for evidence

of deep pitting, cracks, or distortion. Following diagram

outlines valve running clearances between valve stems

and guides.