Kohler command pro ECH749 Service Manual page 20

Specifi cations
CLEARANCE
SPECIFICATIONS 3
Valves and Valve Lifters
Hydraulic Lifter to Crankcase
Running Clearance
Intake Valve Stem-to-Valve
Guide Running Clearance
Exhaust Valve Stem-to-Valve
Guide Running Clearance
Ignition Module Air Gap
Speed Sensor Air Gap
Intake Valve Guide I.D.
New
Max. Wear Limit
Exhaust Valve Guide I.D.
New
Max. Wear Limit
Guide Reamer Size
Standard
0.25 mm O.S.
Intake Valve Minimum Lift
Exhaust Valve Minimum Lift
Nominal Valve Seat Angle
20
ECH630-ECH680 ECH730-ECH749
0.011/0.048 mm (0.0004/0.0019 in.)
0.040/0.078 mm (0.0016/0.0031 in.)
0.052/0.090 mm (0.0020/0.0035 in.)
7.040/7.060 mm (0.2772/0.2780 in.)
7.134 mm (0.2809 in.)
7.040/7.060 mm (0.2772/0.2780 in.)
7.159 mm (0.2819 in.)
7.050 mm (0.2776 in.)
7.300 mm (0.2874 in.)
KohlerEngines.com
CH26 CH735
0.0241/0.0501 mm (0.0009/0.0020 in.)
0.038/0.076 mm (0.0015/0.0030 in.)
0.050/0.088 mm (0.0020/0.0035 in.)
0.28/0.33 mm (0.011/0.013 in.)
1.50 ± 0.25 mm (0.059 ± 0.010 in.)
7.038/7.058 mm (0.2771/0.2779 in.)
7.134 mm (0.2809 in.)
7.038/7.058 mm (0.2771/0.2779 in.)
7.159 mm (0.2819 in.)
7.048 mm (0.2775 in.)
7.298 mm (0.2873 in.)
8.07 mm (0.3177 in.)
8.07 mm (0.3177 in.)
45°
CH745
24 690 01 Rev. K