Engine Service Manual

16
Specifi cations
KohlerEngines.com 17 690 01 Rev. F
CLEARANCE SPECIFICATIONS
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CH260/CH270 CH395 CH440
Valves and Valve Lifters
Intake Valve Stem-to-Valve Guide Running Clearance 0.038/0.065 mm
(0.0015/0.0026 in.)
0.025/0.055 mm (0.0010/0.0022 in.)
Exhaust Valve Stem-to-Valve Guide Running Clearance 0.085/0.112 mm
(0.0033/0.0044 in.)
0.040/0.07 mm (0.0016/0.0028 in.)
Intake Valve Stem O.D.
New
5.50 mm
(0.217 in.)
6.57 mm (0.259 in.)
Max. Wear Limit 5.34 mm
(0.210 in.)
6.40 mm (0.252 in.)
Exhaust Valve Stem O.D.
New 5.438 mm
(0.214 in.)
6.55 mm (0.258 in.)
Max. Wear Limit 5.28 mm
(0.208 in.)
6.41 mm (0.252 in.)
Intake Valve Stem to Guide
New 0.024/0.039 mm
(0.0009/0.0015 in.)
0.025/0.055 mm (0.0010/0.0022 in.)
Max. Wear Limit 0.10 mm
(0.0039 in.)
0.13 mm
(0.0051 in.)
0.14 mm
(0.0055 in.)
Exhaust Valve Stem to Guide
New 0.098/0.112 mm
(0.0038/0.0044 in.)
0.040/0.070 mm (0.0016/0.0028 in.)
Max. Wear Limit 0.12 mm
(0.0047 in.)
0.10 mm
(0.0039 in.)
0.11 mm
(0.0043 in.)
Valve Guide Reamer Size
Standard Intake
5.524 mm (0.2175
in.)
6.608 mm (0.2602 in.)
Standard Exhaust 5.536 mm (0.2179
in.)
6.608 mm (0.2602 in.)
Valve Seat Width 0.80 mm (0.0315
in.)
1.10 mm (0.0433
in.)
1.20 mm (0.0472
in.)
Nominal Valve Face Angle 45°
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Values are in Metric units. Values in parentheses are English equivalents.