Kohler command pro CH940 Service Manual page 18

Specifications
CLEARANCE SPECIFICATIONS
Flywheel End Main Bearing Journal
O.D. - New
O.D. - Max. Wear Limit
Max. Taper
Max. Out-of-Round
Cylinder Bore
Cylinder Bore I.D.
New
Max. Wear Limit
Max. Taper
Max. Out-of-Round
Cylinder Head
Max. Out-of-Flatness
Governor
Governor Cross Shaft-to-Crankcase Running Clearance
Governor Cross Shaft O.D.
New
Max. Wear Limit
Governor Gear Shaft-to-Governor Gear Running Clearance
Governor Gear Shaft O.D.
New
Max. Wear Limit
Ignition
Spark Plug Gap
Ignition Module Air Gap (CDI/MDI Ignition Module)
Crankshaft Bearing (flywheel/PTO)
New (installed)
Max. Wear Limit
Piston, Piston Rings, and Piston Pin
Piston Style A
Piston-to-Piston Pin Running Clearance
Piston Pin Bore I.D.
New
Max. Wear Limit
Piston Pin O.D.
New
Max. Wear Limit
Top Compression Ring-to-Groove Side Clearance
Middle Compression Ring-to-Groove Side Clearance
Oil Control Ring-to-Groove Side Clearance
Top and Middle Compression Ring End Gap
New
Max. Wear Limit
Piston Thrust Face O.D.
New Bore
Used Bore (max.)
Piston Thrust Face-to-Cylinder Bore
New
Values are in Metric units. Values in parentheses are English equivalents.
3
Measure 11 mm (0.4331 in.) above bottom of piston skirt at right angles to piston pin.
7
18
3
7
Running Clearance
7
KohlerEngines.com
CH940 CH960 CH980
44.978/45.00 mm (1.770/1.771 in.)
44.90 mm (1.767 in.)
0.022 mm (0.0009 in.)
0.025 mm (0.0010 in.)
90.000/90.025 mm (3.543/3.544 in.)
90.075 mm (3.546 in.)
0.013 mm (0.00051 in.)
0.013 mm (0.00051 in.)
0.076 mm (0.003 in.)
0.025/0.087 mm (0.0009/0.0034 in.)
7.963/8.000 mm (0.3135/0.3149 in.)
7.936 mm (0.3124 in.)
0.070/0.160 mm (0.0027/0.0063 in.)
5.990/6.000 mm (0.2358/0.2362 in.)
5.977 mm (0.2353 in.)
0.76 mm (0.030 in.)
0.28/0.33 mm (0.011/0.013 in.)
45.040/45.145 mm (1.773/1.777 in.)
45.158 mm
0.006/0.018 mm (0.0002/0.0007 in.)
19.006/19.013 mm (0.7482/0.7485 in.)
19.025 mm (0.7490 in.)
18.995/19.000 mm (0.7478/0.7480 in.)
18.994 mm (0.7478 in.)
0.04/0.08 mm (0.0015/0.0031 in.)
0.04/0.08 mm (0.0015/0.0031 in.)
0.03/0.19 mm (0.0011/0.0074 in.)
0.30/0.55 mm (0.011/0.021 in.)
0.94 mm (0.037 in.)
89.953/89.967 mm (3.5414/3.5420 in.)
89.925 mm (3.540 in.)
0.033/0.72 mm (0.0013/0.0028 in.)
CH1000
62 690 01 Rev. J