Kohler Command PRO CH940 Service Manual

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

Kohler Command PRO CH940 Specifications

General

Brand	Kohler
Model	Command PRO CH940
Category	Engine
Language	English