Kohler Command PRO CH440 Service Manual

1.14
Section 1
Safety and General Information
Connecting Rod
Connecting Rod Screw Torque (torque in increments)
1
CH270 ........................................................................................................ 12 N·m (106 in. lb.)
CH395,CH440 ........................................................................................... 20 N·m (177 in. lb.)
Crankpin End I.D. @ 21°C (70°F)
New
CH270 ................................................................................................. 30.021/30.026 mm (1.1819/1.1821 in.)
CH395,CH440 .................................................................................... 33.020/33.030 mm (1.3000/1.3004 in.)
Max. Wear Limit
CH270 ................................................................................................. 30.08 mm (1.184 in.)
CH395 ................................................................................................. 33.07 mm (1.302 in.)
CH440 ................................................................................................. 37.08 mm (1.460 in.)
Connecting Rod-to-Crankpin Side Clearance
New
CH270 ................................................................................................. 0.58/0.60 mm (0.023/0.024 in.)
CH395 ................................................................................................. 0.73 mm (0.029 in.)
CH440 ................................................................................................. 0.56 mm (0.022 in.)
Max. Wear Limit
CH270 ................................................................................................. 1.10 mm (0.043 in.)
CH395 ................................................................................................. 1.36 mm (0.054 in.)
CH440 ................................................................................................. 1.06 mm (0.042 in.)
Connecting Rod-to-Piston Pin Running Clearance
CH270,CH440 ........................................................................................... 0.008/0.025 mm (0.0003/0.0010 in.)
CH395 ........................................................................................................ 0.006/0.028 mm (0.0002/0.0011 in.)
Piston Pin End I.D. @ 21°C (70°F)
New
CH270 ................................................................................................. 18.010/18.015 mm (0.7091/0.7093 in.)
CH395 ................................................................................................. 18.004/18.020 mm (0.7088/0.7094 in.)
CH440 ................................................................................................. 20.000/20.008 mm (0.7874/0.7874 in.)
Max. Wear Limit
CH270,CH395 .................................................................................... 18.08 mm (0.712 in.)
CH440 ................................................................................................. 20.05 mm (0.789 in.)
Crankcase
Governor Cross Sha Bore I.D.
New
CH270 ................................................................................................. 6.000/6.024 mm (0.2362/0.2372 in.)
CH395,CH440 .................................................................................... 8.000/8.024 mm (0.3150/0.3159 in.)
Max. Wear Limit
CH270 ................................................................................................. 6.037 mm (0.2377 in.)
CH395,CH440 .................................................................................... 8.074 mm (0.7118 in.)
Oil Drain Plug Torque
CH270 ........................................................................................................ 18 N·m (159 in. lb.)
CH395,CH440 ........................................................................................... 23 N·m (204 in. lb.)
Closure Plate Screw Torque ........................................................................... 24 N·m (212 in. lb.)
Crankshaft
End Play (Free) ................................................................................................ 0.0508/0.254 mm (0.002/0.010 in.)
¹ Values are in Metric units. Values in parentheses are English equivalents. Lubricate threads with engine oil
prior to assembly.

Kohler Command PRO CH440 Specifications

General

Compression Ratio	8.0:1
Fuel System	Carburetor
Cooling System	Air-cooled
Ignition System	Electronic
Governor Type	Mechanical
Engine Type	4-cycle, OHV
Displacement	429 cc
Power	14 HP
Oil Capacity	1.4 L
Starter Type	Electric
Weight	32 kg